List of largest stars

Below are lists of the largest stars currently known, ordered by radius and separated into categories by galaxy. The unit of measurement used is the radius of the Sun (approximately 695,700 km; 432,300 mi).

Overview

Although red supergiants are often considered the largest stars, some other star types have been found to temporarily increase significantly in radius, such as during LBV eruptions or luminous red novae. Luminous red novae appear to expand extremely rapidly, reaching thousands to tens of thousands of solar radii within only a few months, significantly larger than the largest red supergiants.

Some studies use models that predict high-accreting Population III or Population I supermassive stars (SMSs) in the very early universe could have evolved "red supergiant protostars". These protostars are thought to have accretion rates larger than the rate of contraction, resulting in lower temperatures but with radii reaching up to many tens of thousands of R_☉, comparable to some of the largest known black holes.

Angular diameters

The angular diameters of stars can be measured directly using stellar interferometry. Other methods can use lunar occultations or from eclipsing binaries, which can be used to test indirect methods of finding stellar radii. Only a few supergiants can be occulted by the Moon, including Antares and 119 Tauri. Examples of eclipsing binaries are Epsilon Aurigae (Almaaz), VV Cephei, and V766 Centauri (HR 5171). Angular diameter measurements can be inconsistent because the boundary of the very tenuous atmosphere (opacity) differs depending on the wavelength of light in which the star is observed.^{[citation needed]}

Uncertainties remain with the membership and order of the lists, especially when deriving various parameters used in calculations, such as stellar luminosity and effective temperature. Often stellar radii can only be expressed as an average or be within a large range of values. Values for stellar radii vary significantly in different sources and for different observation methods.

Caveats

Various issues exist in determining accurate radii of the largest stars, which in many cases do display significant errors. The following lists are generally based on various considerations or assumptions; these include:

Stellar radii or diameters are usually derived only approximately using the Stefan–Boltzmann law for the deduced stellar luminosity and effective surface temperature.
Stellar distances, and their errors, for most stars, remain uncertain or poorly determined.
Many extended supergiant atmospheres also significantly change in size over time, regularly or irregularly pulsating over several months or years as variable stars. This makes adopted luminosities poorly known and may significantly change the quoted radii.
Other direct methods for determining stellar radii rely on lunar occultations or from eclipses in binary systems. This is only possible for a very small number of stars.
Many distance estimates for red supergiants come from stellar cluster or association membership, because it is difficult to calculate accurate distances for red supergiants that are not part of any cluster or association.
In these lists are some examples of extremely distant extragalactic stars, which may have slightly different properties and natures than the currently largest known stars in the Milky Way. For example, some red supergiants in the Magellanic Clouds are suspected to have slightly different limiting temperatures and luminosities. Such stars may exceed accepted limits by undergoing large eruptions or changing their spectral types over just a few months (or potentially years).

Lists

The following lists show the largest known stars based on the host galaxy.

Milky Way

List of the largest known stars in the Milky Way
Star name	Solar radius (R_☉)	Method	Notes
Orbit of Saturn	2,047–2,049.9		Reported for reference
Stephenson 2 DFK 1 (St2-18)	1,840+310 −360	L/T_eff	Spectrum cannot accurately be reproduced by models at the distance to Stephenson 2, which may indicate that it is a foreground star considering that its radial velocity of 93.4±0.2 km s^-1 deviates from that of the cluster, which is 109 km s^-1. However, decreasing the distance up to 4 kpc does not solve the issue, so the star is still considered to be a member of the cluster, with only spectra at the smallest beam being considered.
Theoretical limit of star size (Milky Way)	1,690+800 −610	L/T_eff	Estimated by measuring the fraction of red supergiants at higher luminosities in a large sample of supernova progenitor candidates. Valid for M3-type red supergiants. Reported for reference
NML Cygni	1,590+130 −110	L/T_eff	Surrounding dusty region is very complex making the radius hard to determine.
RSGC1-F01	1,470 ± 230	L/T_eff
VX Sagittarii	1,456±108 – 1,556±110	AD	Widely recognized as being among the largest known stars. The lower value is the mean radius during quiescent pulsation cycle, with an amplitude of 60 R_☉, while the higher value is the mean radius during the active pulsation cycle, with an amplitude of 197 R_☉. Reached a maximum radius of 1,798±127 R_☉ in September 2019. During 2020 to 2021, the star underwent a great dimming event similar to Betelgeuse.
Stephenson 2 DFK 2 (St2-3)	1,420 ± 250	L/T_eff
VY Canis Majoris	1,420±120	AD	An extreme oxygen-rich red hypergiant that has experienced two dimming periods in the 20th century, where the star became dimmer by up to 2.5 magnitudes. Potentially the largest known star. There is a possibility that this size might be a bit overestimated (on the order of 1 sigma). Hence, the quoted radius might be just an upper limit.
AH Scorpii	1,411±124	AD	Its angular diameter was re-measured at 5.05 ± 0.5 mas in 2023, which would yield a smaller radius of 1,227 `R`_☉.
CD–34°11794	1,409	L/T_eff	Oxygen-rich red supergiant and OH/IR star.
RSGC1-F06	1,380 ± 330	L/T_eff
S Persei	1,364±6	AD	Oxygen-rich red supergiant. Also called a hypergiant.
HR 5171 (V766 Centauri A)	1,315±260 – 1,575±400	AD	V766 Centauri Aa is a rare variable yellow hypergiant.
RSGC1-F02	1,290 ± 210	L/T_eff
HD 143183 (V558 Normae)	1,261	L/T_eff
PZ Cassiopeiae	1,260 – 1,340	L/T_eff
RSGC1-F10	1,250 ± 290	L/T_eff
V354 Cephei	1,245	L/T_eff
Westerlund 1 W237 (Westerlund 1 BKS B)	1,241±70	L/T_eff
ST Cephei	1,218	L/T_eff
IRC -30312	1,204	L/T_eff
IRC -10414	~1,200	L/T_eff
V517 Monocerotis	1,196+80 −159 – 1,208	L/T_eff
RSGC1-F05	1,190 ± 280	L/T_eff
GCIRS 7	1,170±60, 1,359, 1,368	AD & L/T_eff
Westerlund 1 W26 (Westerlund 1 BKS AS)	1,165±58–1,221±120	L/T_eff
[A72c] 16	1,157	L/T_eff
WY Velorum A	1,157	L/T_eff	A symbiotic binary.
RSGC1-F08	1,150 ± 260	L/T_eff
IRC -30303	1,147	L/T_eff
RSGC1-F03	1,140 ± 180	L/T_eff
Orbit of Jupiter	1,114.5–1,115.8		Reported for reference
V582 Cassiopeiae	1,111	L/T_eff
RW Cephei	1,105+49 −46	AD	A K-type hypergiant star that experienced a "great dimming" event in 2022, similar to Betelgeuse.
RW Cygni	1,103+251 −177	AD
RSGC1-F04	1,100 ± 180	L/T_eff
RT Carinae	1,090	L/T_eff
RSGC1-F13	1,080 ± 170	L/T_eff
UU Persei	1,079+9 −8	L/T_eff
LL Pegasi	1,070	L/T_eff
HD 126577	1,066+9 −32	L/T_eff
HaroChavira 1	1,058	L/T_eff
EV Carinae	1,057	L/T_eff	Red supergiant. An older study suggests an extremely high radius of 2,877 R_☉.
CM Velorum	1,048 – 1,416.24+0.40 −0.96	L/T_eff
AG Camelopardalis	1,048	L/T_eff
SU Persei	1,044+31 −21 – 1,139+34 −23,	AD
SW Cephei	1,035+75 −120	AD
KY Cygni	1,032	L/T_eff
BC Cygni	1,031 – 1,187+34 −37, 1,062	L/T_eff	A more detailed but older study gives values of 1,081 R_☉ (856–1,375) for the year 2000, and 1,303 R_☉ (1,021–1,553) for the year 1900.
RSGC1-F11	1,030 ± 230	L/T_eff
Stephenson 2 DFK 3 (St2-4)	1,030 ± 190	L/T_eff
MY Cephei	1,028 ± 169 – 1,138 ± 387	L/T_eff
V346 Puppis	1,025	L/T_eff
V530 Cassiopeiae	1,017	L/T_eff
V602 Carinae	1,015	AD
VV Cephei A	1,015	AD	A red supergiant star orbited by a smaller B-type main-sequence star with a radius estimated between 13 and 25 R_☉. Widely recognised as being among the largest known stars. Another estimate give a radius of 660 R_☉ based on the Gaia DR3 distance of 1 kpc.
U Lacertae A	1,013	L/T_eff
RSGC1-F07	1,010 ± 240	L/T_eff
KW Sagittarii	1,009±142	AD
Ve 4-64	1,007	L/T_eff
V349 Carinae	1,002+12 −74	L/T_eff
RSGC1-F09	1,000 ± 230	L/T_eff
V674 Cephei	999	L/T_eff
CZ Hydrae	990	L/T_eff
IRAS 18111-2257	~990 – 1,180	L/T_eff	Estimated based on the bolometric luminosity (14,000–20,000 `L`_☉) and assumed effective temperature of 2,000 K. Another period-luminosity-derived luminosity for this star results in a radius of 1,730 R_☉.
CIT 11 (V3060 Cygni)	982	L/T_eff
V381 Cephei Aa	977	L/T_eff
MSX6C G086.5890–00.7718	(975+175 −183 – 1,035+186 −158) – 1,196.91+6.31 −6.35	L/T_eff	Lower values based on the Gaia DR3 effective temperature and the luminosity of Levesque et al. (2005) and that of Messineo & Brown (2019). Higher value based on the GSP Phot-Aeneas library using BR/RP spectra in Gaia DR3.
V3953 Sagittarii (IRC −30398)	970	L/T_eff
V396 Centauri	965	L/T_eff
UW Aquilae	964	L/T_eff
RSGC1-F12	950 ± 230	L/T_eff
V398 Cassiopeiae (HD 240275)	941	L/T_eff
IRC +60342	940	L/T_eff
ψ¹ Aurigae	934 – 1,004+369 −234	L/T_eff
GX Monocerotis	931	L/T_eff
NR Vulpeculae	923+62 −50	AD
V645 Cephei	920	L/T_eff
S Cassiopeiae	920	L/T_eff	One of the coolest known stars, at an effective temperature of 1,800 K (1,500 °C).
NV Aurigae (IRC +50137)	918	L/T_eff
UY Scuti	909	L/T_eff	Once thought to have a radius of 1,708±192 R_☉.
KU Andromedae (IRC +40004)	900 – 1,040	L/T_eff
V1417 Aquilae	900	L/T_eff
V774 Sagittarii	889	L/T_eff
V923 Centauri	881	L/T_eff
IRAS 20341+4047	880	L/T_eff
IRAS 17418−2713	880	L/T_eff
V540 Sagittarii	880	L/T_eff
V386 Cephei	879	L/T_eff
Trumpler 27-1 (CD–33°12241)	876+5 −12	?
T Lyrae	880	L/T_eff
TYC 3996-552-2	870	L/T_eff
V1300 Aquilae (IRC −10529)	860 – 1,100	L/T_eff
Westerlund 1 W20 (Westerlund 1 BKS D)	858±48	L/T_eff
FX Serpentis	857	L/T_eff
AZ Cygni	856+20 −14 – 927+21 −15	AD	Estimated based on data from the CHARA array. Other radii of 890+21 −15 R_☉ (2014), 895+21 −15 R_☉ (2015) and 890+21 −15 R_☉ (2016) are calculated based on the same data.
V348 Velorum	855	L/T_eff
BI Cygni	852+12 −9 – 908+12 −10	AD
TW Carinae	835	L/T_eff
V358 Cassiopeiae	835	L/T_eff
VLH96 A	833	L/T_eff
DO 26226	826	L/T_eff
HD 155737	823	L/T_eff
6 Geminorum	821	L/T_eff
RW Leonis Minoris	820 – 1,000	L/T_eff
HaroChavira 2	813	L/T_eff
HD 300933	806	L/T_eff
[W61c] R 53	801	L/T_eff
RT Ophiuchi	801±217	AD
HD 95687	797	L/T_eff
BO Carinae	790±158	L/T_eff
HD 62745	790	L/T_eff
WX Piscium	790 – 1,000	L/T_eff
VR5–7	775 ± 65	L/T_eff
T Cancri	770	L/T_eff
V Cygni	770	L/T_eff
BD+63 3	770	L/T_eff
CL Carinae	770	L/T_eff
RS Persei	770±30, 775+110 −85	AD
V355 Cephei	770±154 – 790	L/T_eff
BD+63 270	769	L/T_eff
V644 Cephei	765	L/T_eff
Garnet Star (μ Cephei)	762	AD	Widely recognised as being among the largest known stars. Might be the largest star visible to the naked eye.
BM VIII 11	754	L/T_eff
[SLN74] 2130	752	L/T_eff
IRAS 10176-5802	751.2+0.4 −0.6 – (793+281 −152–849+172 −133)	L/T_eff	Lower value based on the GSP Phot-Aeneas library using BR/RP spectra in Gaia DR3. Higher values based on the Gaia DR3 effective temperature and the luminosity of Levesque et al. (2005) and that of Messineo & Brown (2019).
HD 303250	750±150	L/T_eff
V384 Persei	750 – 940	L/T_eff
V466 Persei	750	L/T_eff
V Coronae Borealis	750	L/T_eff
GY Aquilae	748 – 920	AD
UU Pegasi	742±193	AD
IM Cassiopeiae	740	L/T_eff
GY Camelopardalis	740	L/T_eff
R Andromedae	730	L/T_eff
RSGC3-S3	730 ± 150	L/T_eff
Stephenson 2 DFK 5 (St2-14)	740 ± 130	L/T_eff
TT Centauri	740	L/T_eff
Stephenson 2 DFK 10 (St2-5)	730	L/T_eff
V1259 Orionis	730	L/T_eff
RSGC3-S15	730 ± 140	L/T_eff
VdBH 222#566	725	L/T_eff	May be larger at 912 R_☉, however this is unlikely due to the luminosity not matching with the H-R diagram where the temperature was calculated.
HD 105563 A	723	L/T_eff
Westerlund 1 W75 (Westerlund 1 BKS E)	722±36	L/T_eff
AI Volantis	720	L/T_eff
V1111 Ophiuchi (IRC +10365)	720 – 900	L/T_eff
XX Persei	718+80 −56	AD
RX Telescopii	716	L/T_eff
V Camelopardalis	716±185	AD
CD–61°3575	716	L/T_eff
S Cephei	715	L/T_eff
AS Cephei	713	L/T_eff
V770 Cassiopeiae (BD+60 299)	713	L/T_eff
AZ Cephei	712	L/T_eff
R Leporis (Hind's Crimson Star)	710 – 910	AD
MZ Puppis	708	L/T_eff
GP Cassiopeiae	707 – 771.74+0.23 −0.86	L/T_eff
GCIRS 12N	703 ± 107	L/T_eff
RU Herculis	700 ± 90	L/T_eff
V528 Carinae	700±140	L/T_eff
The following well-known stars are listed for the purpose of comparison.
Antares (α Scorpii A)	680	AD	Fourteenth brightest star in the night sky. Widely recognised as being among the largest known stars.
Betelgeuse (α Orionis)	640, 764+116 −62, 782 ± 55, 812	AD & SEIS	Tenth brightest star in the night sky. Widely recognised as being among the largest known stars, radius decreased to ~500 R_☉ during the 2020 great dimming event.
ρ Cassiopeiae	634±24	AD	A yellow hypergiant star, similar to V382 Carinae, that is also visible to the naked eye.
R Horologii	630	L/T_eff	A red giant star with one of the largest ranges in brightness known of stars in the night sky visible to the unaided eye. Despite its large radius, it is less massive than the Sun.
V382 Carinae	616±69	AD	A yellow hypergiant, one of the rarest types of stars.
119 Tauri (CE Tauri, Ruby Star)	587 – 593	AD
CW Leonis	560	L/T_eff	The nearest carbon star.
V838 Monocerotis	464	L/T_eff	During the 2002 Red Nova, the star's radius may have increased up to 3,190 R_☉.
V509 Cassiopeiae	433±17	AD	A variable yellow hypergiant whose size varied from around 680 R_☉ in 1950–1970 to 910 R_☉ in 1977, and later decreased to 390 R_☉ in the 1990s.
Mira (ο Ceti A)	332–402	AD	Prototype of the Mira variables.
Orbit of Mars	322–323.1		Reported for reference
La Superba (Y Canum Venaticorum)	315	L/T_eff
Pistol Star (V4647 Sagittarii)	308	L/T_eff	One of the most luminous stars known.
R Doradus	298 ± 21	AD	The extrasolar star with the largest apparent size.
Rasalgethi (α Herculis A)	284±60 (264–303)	L/T_eff
Cygnus OB2#12	246	?	One of the most massive and luminous stars known.
Orbit of Earth (~1 AU)	214		Reported for reference
Suhail (λ Velorum)	211±6	AD
Wezen (δ Canis Majoris)	188	L/T_eff	Thirty-sixth brightest star in the night sky.
Enif (ε Pegasi)	178	L/T_eff
Orbit of Venus	158.6		Reported for reference
η Carinae A	128 – 742	OD	During the 1843 Great Eruption, the star's radius may have increased up to 4,319–6,032 R_☉.
Deneb (α Cygni)	107 – 203±17	AD & ?	Eighteenth brightest star in the night sky.
Orbit of Mercury	82.9–84.6		Reported for reference
Rigel (β Orionis A)	74.1+6.1 −7.3	AD	Seventh brightest star in the night sky.
Canopus (α Carinae)	73.3	AD	Second brightest star in the night sky.
Gacrux (γ Crucis)	73	L/T_eff	Twenty-sixth brightest star in the night sky.
Polaris (α Ursae Minoris Aa)	46.27±0.42	AD	The current star in the North Pole. It is a Classical Cepheid variable, and the brightest example of its class.
Aldebaran (α Tauri A)	45.1±0.1	AD	Fourteenth brightest star in the night sky.
Arcturus (α Boötis)	25.4 ± 0.2	AD	This is the nearest red giant to the Earth, and the fourth brightest star in the night sky.
Pollux (β Geminorum)	9.06 ± 0.03	AD	The nearest giant star to the Earth.
Spica (α Virginis A)	7.47±0.54		One of the nearest supernova candidates and the sixteenth-brightest star in the night sky.
Regulus (α Leonis A)	4.16 × 3.14		The nearest B-type star to the Earth.
Vega (α Lyrae)	2.726±0.006 × 2.418±0.012	AD	Fifth brightest star in the night sky.
Altair (α Aquilae)	2.01 × 1.57		Twelfth brightest star in the night sky.
Sirius (α Canis Majoris A)	1.713	AD	The brightest star in the night sky.
Rigil Kentaurus (α Centauri A)	1.2175	AD	Third brightest star in the night sky.
Sun	1		The largest object in the Solar System.

Magellanic Clouds

List of the largest known stars in the Magellanic Clouds
Star name	Solar radius (R_☉)	Galaxy	Method	Notes
Theoretical limit of star size (Large Magellanic Cloud)	≳1,550		L/T_eff	Estimated by measuring the fraction of red supergiants at higher luminosities in a large sample of stars. Assumes an effective temperature of 3,545 K. Reported for reference
WOH G64 A	1,540 ± 77	Large Magellanic Cloud	L/T_eff	Once thought to have become a smaller yellow hypergiant, due to its transition from semi-regular to irregular variability in 2014. Recent data show it remains a red supergiant, affected by a companion star. Possibly the largest known star.
MSX LMC 839	1,526	Large Magellanic Cloud	L/T_eff
HV 888 (WOH S140)	1,509	Large Magellanic Cloud	L/T_eff
IRAS 04516–6902	1,502	Large Magellanic Cloud	L/T_eff
W60 A27	1,444	Large Magellanic Cloud	L/T_eff
HD 269551	1,439	Large Magellanic Cloud	L/T_eff
HV 12463	1,420	Large Magellanic Cloud	L/T_eff
IRAS 05280–6910 (NGC 1984-IRS1)	1,367	Large Magellanic Cloud	L/T_eff	The most reddened object in the Large Magellanic Cloud.
IRAS 04509–6922	1,339	Large Magellanic Cloud	L/T_eff
OGLE BRIGHT-LMC-LPV-52	1,275–1,384	Large Magellanic Cloud
IRAS 05346-6949	1,211	Large Magellanic Cloud	L/T_eff	It has an estimated mass-loss rate of 0.0017 `M`_☉ (566 Earths) per year, the highest for any star.
W60 B90 (WOH S264)	1,210	Large Magellanic Cloud	L/T_eff	Has an unusually high metallicity and velocity.
HV 5618	1,163	Large Magellanic Cloud	L/T_eff
HV 2242	1,160 – 1,180	Large Magellanic Cloud	L/T_eff
LMC 25320	1,156	Large Magellanic Cloud	L/T_eff
SMC 18592	1,129	Small Magellanic Cloud	L/T_eff
MSX SMC 018	1,119	Small Magellanic Cloud	L/T_eff
LMC252	1,117–1,164	Large Magellanic Cloud
LMC045	1,112	Large Magellanic Cloud	L/T_eff
SP77 21-12	1,103	Large Magellanic Cloud	L/T_eff
MSX LMC 810	1,104	Large Magellanic Cloud	L/T_eff
WOH S338	1,100	Large Magellanic Cloud	L/T_eff
LMC 136042	1,092	Large Magellanic Cloud	L/T_eff
LMC 175188	1,090–1,317	Large Magellanic Cloud
WOH S274	1,071	Large Magellanic Cloud	L/T_eff
W60 D44	1,063	Large Magellanic Cloud	L/T_eff
HV 12233	1,057	Large Magellanic Cloud	L/T_eff
MSX LMC 589	1,051	Large Magellanic Cloud	L/T_eff
Theoretical limit of star size (Small Magellanic Cloud)	≳1,050		L/T_eff	Estimated by measuring the fraction of red supergiants at higher luminosities in a large sample of stars. Assumes an effective temperature of 3,850 K. Reported for reference
MSX LMC 947	1,050	Large Magellanic Cloud	L/T_eff
LMC 144217	1,039	Large Magellanic Cloud
SP77 31-18	1,038	Large Magellanic Cloud	L/T_eff
IRAS 05402-6956	1,032	Large Magellanic Cloud	L/T_eff
HV 2255	1,027–1,236	Large Magellanic Cloud
TRM 36	1,019	Large Magellanic Cloud	L/T_eff
Sk -69 148	1,006	Large Magellanic Cloud	L/T_eff	A yellow hypergiant.
LMC 175549	1,005	Large Magellanic Cloud	L/T_eff
HV 2450	1,000+2 −1–1,071	Large Magellanic Cloud	L/T_eff	A yellow hypergiant.
LMC 149767	994	Large Magellanic Cloud	L/T_eff
UCAC2 2674864 (HV 2834)	990+115 −100	Large Magellanic Cloud	L/T_eff
HV 996	988–1,176	Large Magellanic Cloud
W61 8–88	986	Large Magellanic Cloud	L/T_eff
HV 2362	982 – 1,030	Large Magellanic Cloud	L/T_eff
MG73 59	979	Large Magellanic Cloud	L/T_eff	A yellow supergiant.
HD 268757	979	Large Magellanic Cloud	L/T_eff	A G8 yellow hypergiant.
SMC 56389	976	Small Magellanic Cloud	L/T_eff
LMC 136404	974	Large Magellanic Cloud	L/T_eff
SP77 46-32	973–1,133	Large Magellanic Cloud
HV 2084	967–1,083	Small Magellanic Cloud
WOH S74	965–1,014	Large Magellanic Cloud	L/T_eff
SMC 10889	963	Small Magellanic Cloud	L/T_eff
TRM 67	951	Large Magellanic Cloud	L/T_eff
LHA 120-S 26	951	Large Magellanic Cloud	L/T_eff
LMC 139413	951	Large Magellanic Cloud	L/T_eff
TRM 87	947	Large Magellanic Cloud	L/T_eff
LMC 148035	947	Large Magellanic Cloud	L/T_eff
HV 12802	946–1,377	Large Magellanic Cloud
SMC 018136	945	Small Magellanic Cloud	L/T_eff
LMC 142202	943	Large Magellanic Cloud	L/T_eff
LMC 147199	939 – 990	Large Magellanic Cloud	L/T_eff
SP77 37-24	936	Large Magellanic Cloud	L/T_eff
LMC 148381	932	Large Magellanic Cloud	L/T_eff
LMC 23095	926 – 1,280	Large Magellanic Cloud	L/T_eff
SP77 31–16	923±28	Large Magellanic Cloud	L/T_eff	A yellow hypergiant.
LMC 170452	920	Large Magellanic Cloud	L/T_eff
SP77 44-5	918	Large Magellanic Cloud	L/T_eff
LMC 66778	915 – 990	Large Magellanic Cloud	L/T_eff
NGC371 R20	913	Small Magellanic Cloud	L/T_eff
LMC 150040	911	Large Magellanic Cloud	L/T_eff
HV 2236	911–971	Large Magellanic Cloud	L/T_eff
TRM 108	906	Large Magellanic Cloud	L/T_eff
LMC 169142	902	Large Magellanic Cloud	L/T_eff
WOH S457	902±45	Large Magellanic Cloud	L/T_eff
IRAS 04498-6842 (LI-LMC 60)	898 – 1,137 – 1,765, 1,224	Large Magellanic Cloud	L/T_eff	Lower value derived from fitting models that assume the star's effective temperature to be 3,400 K. Higher value based on the measured effective temperature from van Loon et al. (2005). A newer paper estimates parameters that would result in a radius of 1,765 R_☉.
LMC 135720	898	Large Magellanic Cloud	L/T_eff
SMC 81961	892	Small Magellanic Cloud	L/T_eff
SP77 44-19	891–1,297	Large Magellanic Cloud	L/T_eff
SP77 45–49	890	Large Magellanic Cloud	L/T_eff
LMC 175464	892–982	Large Magellanic Cloud
SMC 49478	888	Small Magellanic Cloud	L/T_eff
HV 12185	890+55 −65	Large Magellanic Cloud	L/T_eff
SP77 45–53	885–981	Large Magellanic Cloud
LMC 170079	882	Large Magellanic Cloud	L/T_eff
SMC 5092	880	Small Magellanic Cloud	L/T_eff
HV 12793	880+45 −65	Large Magellanic Cloud	L/T_eff
W61 21–22	877	Large Magellanic Cloud	L/T_eff
SP77 35-1	877	Large Magellanic Cloud	L/T_eff
UCAC3 43-23216	873	Large Magellanic Cloud	L/T_eff
HV 11423	872	Small Magellanic Cloud	L/T_eff
WOH S57	875+70 −60	Large Magellanic Cloud	L/T_eff
SP77 53-3	870	Large Magellanic Cloud	L/T_eff
SP77 36-14	870	Large Magellanic Cloud	L/T_eff
SP77 31-19	870	Large Magellanic Cloud	L/T_eff
LMC 158646	865	Large Magellanic Cloud	L/T_eff
SP77 31-20	864	Large Magellanic Cloud	L/T_eff
LMC 113364	864	Large Magellanic Cloud	L/T_eff
SMC 83202	864	Small Magellanic Cloud	L/T_eff
LMC 175746	863	Large Magellanic Cloud	L/T_eff
LMC207	863	Large Magellanic Cloud	L/T_eff
SP77 29-8	858	Large Magellanic Cloud	L/T_eff
SP77 54-38	859–911	Large Magellanic Cloud
LMC 174714	855–965	Large Magellanic Cloud
LMC 176135	854	Large Magellanic Cloud	L/T_eff
LMC178	845	Large Magellanic Cloud	L/T_eff
SP77 31-26	845	Large Magellanic Cloud	L/T_eff
LMC 106201	844	Large Magellanic Cloud	L/T_eff
SP77 48-13	838	Large Magellanic Cloud	L/T_eff
MSX LMC 1318	837	Large Magellanic Cloud	L/T_eff
SP77 28-13	835	Large Magellanic Cloud	L/T_eff
LMC 143898	833	Large Magellanic Cloud	L/T_eff
TYC 9161-866-1	833	Large Magellanic Cloud	L/T_eff
SMC 59803	829	Small Magellanic Cloud	L/T_eff
LMC 157401	828	Large Magellanic Cloud	L/T_eff
SP77 39-22	828	Large Magellanic Cloud	L/T_eff
WOH S52	828	Large Magellanic Cloud	L/T_eff
SP77 30-22	826	Large Magellanic Cloud	L/T_eff
LMC 145728	826	Large Magellanic Cloud	L/T_eff
LMC 169049	825	Large Magellanic Cloud	L/T_eff
SP77 46-34	825	Large Magellanic Cloud	L/T_eff
LMC 177997	825–867	Large Magellanic Cloud
SP77 28–2	825±60	Large Magellanic Cloud	L/T_eff
SP77 22–9	823 – 850	Large Magellanic Cloud	L/T_eff
Z Doradus	824±108–956	Large Magellanic Cloud	L/T_eff
WOH S421	822–840	Large Magellanic Cloud
LMC 72727	822	Large Magellanic Cloud	L/T_eff
SP77 37-28	821	Large Magellanic Cloud	L/T_eff
MSX LMC 575	816–933	Large Magellanic Cloud
LMC 143035	815	Large Magellanic Cloud	L/T_eff
WOH S49	815	Large Magellanic Cloud	L/T_eff
SP77 52-28	812	Large Magellanic Cloud	L/T_eff
SHV 0520422-693821	808	Large Magellanic Cloud	L/T_eff
HD 268850	808–898	Large Magellanic Cloud
SMC 20133	809–835	Small Magellanic Cloud
SMC 25888	804	Small Magellanic Cloud	L/T_eff
SP77 55-20	803	Large Magellanic Cloud	L/T_eff
PGMW 1058	800	Large Magellanic Cloud	L/T_eff
LMC 145112	798	Large Magellanic Cloud	L/T_eff
SMC 47757	795	Small Magellanic Cloud	L/T_eff
LMC 175709	794	Large Magellanic Cloud	L/T_eff
SMC 46497	794	Small Magellanic Cloud	L/T_eff
WOH S60	789	Large Magellanic Cloud	L/T_eff
WOH S102	789	Large Magellanic Cloud	L/T_eff
LMC 164709	787	Large Magellanic Cloud	L/T_eff
SP77 31-28	787	Large Magellanic Cloud	L/T_eff
TRM 73	787–816	Large Magellanic Cloud
SP77 31-21	784	Large Magellanic Cloud	L/T_eff
SMC 8930	784	Small Magellanic Cloud	L/T_eff
PMMR 62	784	Small Magellanic Cloud	L/T_eff
SP77 46-31	782	Large Magellanic Cloud	L/T_eff
LMC211	780	Large Magellanic Cloud	L/T_eff
LMC 140403	778	Large Magellanic Cloud	L/T_eff
LMC 134383	778–803	Large Magellanic Cloud	L/T_eff
SP77 47-11	778	Large Magellanic Cloud	L/T_eff
SP77 40–7	778 – 810	Large Magellanic Cloud	L/T_eff
W61 19–24	780+50 −70	Large Magellanic Cloud	L/T_eff
WOH S28	780	Large Magellanic Cloud	L/T_eff
LMC 141568	776	Large Magellanic Cloud	L/T_eff
SP77 51-2	776	Large Magellanic Cloud	L/T_eff
SP77 31–43	773	Large Magellanic Cloud	L/T_eff
MSX LMC 833	773–849	Large Magellanic Cloud
SP77 52-32	772	Large Magellanic Cloud	L/T_eff
SP77 22-10	767	Large Magellanic Cloud	L/T_eff
SP77 48–6	768	Large Magellanic Cloud	L/T_eff
SMC 12322	765	Small Magellanic Cloud	L/T_eff
WOH S517	764	Large Magellanic Cloud	L/T_eff
WOH S183	763	Large Magellanic Cloud	L/T_eff
LMC256	762	Large Magellanic Cloud	L/T_eff
LMC 154311	762	Large Magellanic Cloud	L/T_eff
LMC 119219	762	Large Magellanic Cloud	L/T_eff
WOH S452	762±275	Large Magellanic Cloud	L/T_eff
MSX SMC 024	761	Large Magellanic Cloud	L/T_eff
WOH S282	758	Large Magellanic Cloud	L/T_eff
LMC 64048	758	Large Magellanic Cloud	L/T_eff
PGMW 3160	758	Large Magellanic Cloud	L/T_eff
WOH S438	757±211	Large Magellanic Cloud	L/T_eff
LMC 61753	755	Large Magellanic Cloud	L/T_eff
LMC 140296	754	Large Magellanic Cloud	L/T_eff
WOH S478	753	Large Magellanic Cloud	L/T_eff
LMC 139027	751 – 790	Large Magellanic Cloud	L/T_eff
SP77 45–16	749 – 800	Large Magellanic Cloud	L/T_eff
SP77 37-20	749	Large Magellanic Cloud	L/T_eff
SP77 54–27	750 – 758 – 800	Large Magellanic Cloud	L/T_eff
LMC 155529	747	Large Magellanic Cloud	L/T_eff
LMC 143877	746	Large Magellanic Cloud	L/T_eff
SMC 64663	745	Small Magellanic Cloud	L/T_eff
WOH G302	745	Large Magellanic Cloud	L/T_eff
TRM 65	743	Large Magellanic Cloud	L/T_eff
HV 12149	741–767	Small Magellanic Cloud
SMC 50840	740	Small Magellanic Cloud	L/T_eff
SMC 46662	740–874	Small Magellanic Cloud
SP77 29-11	738	Large Magellanic Cloud	L/T_eff
SMC 30616	737	Small Magellanic Cloud	L/T_eff
LMC 162635	736	Large Magellanic Cloud	L/T_eff
SP77 39–17	736 – 760	Large Magellanic Cloud	L/T_eff
LMC 163466	734	Large Magellanic Cloud	L/T_eff
HV 2310	734	Large Magellanic Cloud	L/T_eff
HD 269723	734±17, 814–829	Large Magellanic Cloud	L/T_eff	A yellow hypergiant.
SP77 44-17	732	Large Magellanic Cloud	L/T_eff
SP77 38-5a	732	Large Magellanic Cloud	L/T_eff
LMC 67982	730	Large Magellanic Cloud	L/T_eff
LHA 120-S 129	730	Large Magellanic Cloud	L/T_eff
PMMR 64	730+75 −65	Small Magellanic Cloud	L/T_eff
SP77 51-15	727	Large Magellanic Cloud	L/T_eff
LMC 168757	725	Large Magellanic Cloud	L/T_eff
LMC 163007	725	Large Magellanic Cloud	L/T_eff
W61 8–14	724	Large Magellanic Cloud	L/T_eff
IRAS 05425-6914	724	Large Magellanic Cloud	L/T_eff
SMC 55188	724	Small Magellanic Cloud	L/T_eff
SP77 44-13	721	Large Magellanic Cloud	L/T_eff
MSX LMC 905	719	Large Magellanic Cloud	L/T_eff
LMC 147928	719	Large Magellanic Cloud	L/T_eff
LH 43–15	719 – 740	Large Magellanic Cloud	L/T_eff
PMMR 116	717	Small Magellanic Cloud	L/T_eff
LMC 123778	715	Large Magellanic Cloud	L/T_eff
WOH S314	714	Large Magellanic Cloud	L/T_eff
SP77 61-23	713	Large Magellanic Cloud	L/T_eff
WOH S230	713	Large Magellanic Cloud	L/T_eff
LMC 150396	710	Large Magellanic Cloud	L/T_eff
SP77 48-17	709	Large Magellanic Cloud	L/T_eff
LMC 165242	707	Large Magellanic Cloud	L/T_eff
SP77 51-19	707	Large Magellanic Cloud	L/T_eff
LMC 170539	707	Large Magellanic Cloud	L/T_eff
LMC 154729	705	Large Magellanic Cloud	L/T_eff
OGLE BRIGHT-LMC-LPV-101	703	Large Magellanic Cloud	L/T_eff
MSX SMC 055	702–1,557+215 −130	Small Magellanic Cloud	L/T_eff	A super-AGB candidate.
LMC 168290	702	Large Magellanic Cloud	L/T_eff
LMC180	702	Large Magellanic Cloud	L/T_eff
SP77 45-2	702	Large Magellanic Cloud	L/T_eff
SP77 48–6	700+29 −28	Large Magellanic Cloud	L/T_eff	A yellow hypergiant.
The following well-known stars are listed for the purpose of comparison.
HV 2112	675 – 1,193	Small Magellanic Cloud	L/T_eff	It has been previously considered to be a possible Thorne–Żytkow object.
HV 11417	673–798	Small Magellanic Cloud	L/T_eff	Candidate Thorne-Zytkow object.
HD 269953	647–720	Large Magellanic Cloud	L/T_eff	A yellow hypergiant.
HD 271182	621	Large Magellanic Cloud	L/T_eff	A yellow hypergiant.
HD 33579	471	Large Magellanic Cloud	L/T_eff	The brightest star in the Large Magellanic Cloud.
S Doradus	100	Large Magellanic Cloud	L/T_eff	A luminous blue variable in the S Doradus instability strip.
HD 37974	99	Large Magellanic Cloud	L/T_eff	An unusual blue hypergiant with a large dusty disk.
R136a1	42.7+1.6 −0.9	Large Magellanic Cloud	L/T_eff	One of the most luminous and most massive stars.
BAT 99-98	37.5	Large Magellanic Cloud	L/T_eff	One of the most luminous and most massive stars.
HD 5980 A	24	Small Magellanic Cloud	L/T_eff	A luminous blue variable and one of the most luminous stars.

Andromeda (M31) and Triangulum (M33) galaxies

List of the largest known stars in Andromeda and Triangulum galaxies
Star name	Solar radius (R_☉)	Galaxy	Method	Notes
Theoretical limit of star size (Andromeda Galaxy)	≳1,750		L/T_eff	Estimated by measuring the fraction of red supergiants at higher luminosities in a large sample of stars. Assumes an effective temperature of 3,625 K. Reported for reference
Theoretical limit of star size (Triangulum Galaxy)	≳1,500		L/T_eff	Estimated by measuring the fraction of red supergiants at higher luminosities in a large sample of stars. Assumes an effective temperature of 3,605 K. Reported for reference
LGGS J013414.27+303417.7	1,479	Triangulum Galaxy	L/T_eff
LGGS J013418.56+303808.6	1,363	Triangulum Galaxy	L/T_eff
LGGS J004514.91+413735.0	1,324	Andromeda Galaxy	L/T_eff
LGGS J004125.23+411208.9	1,302	Andromeda Galaxy	L/T_eff
LGGS J013350.62+303230.3	1,283	Triangulum Galaxy	L/T_eff
LGGS J004312.43+413747.1	1,279	Andromeda Galaxy	L/T_eff
LGGS J003951.33+405303.7	1,272	Andromeda Galaxy	L/T_eff
M31-1775	1,254	Andromeda Galaxy	L/T_eff
LGGS J013416.52+305155.4	1,227	Triangulum Galaxy	L/T_eff
LGGS J004416.83+411933.2	1,209	Andromeda Galaxy	L/T_eff
LGGS J004531.13+414825.7	1,201	Andromeda Galaxy	L/T_eff
2MASS J01343365+3046547	1,196	Triangulum Galaxy	L/T_eff
LGGS J013409.63+303907.6	1,182	Triangulum Galaxy	L/T_eff
LGGS J004133.18+411217.2	1,180	Andromeda Galaxy	L/T_eff
LGGS J004455.90+413035.2	1,172	Andromeda Galaxy	L/T_eff
LGGS J013352.96+303816.0	1,163	Andromeda Galaxy	L/T_eff
LGGS J004047.22+404445.5	1,162	Andromeda Galaxy	L/T_eff
LGGS J004254.18+414033.6	1,154	Andromeda Galaxy	L/T_eff
LGGS J004428.48+415130.9	1,130	Andromeda Galaxy	L/T_eff
LGGS J013414.27+303417.7	1,129	Triangulum Galaxy	L/T_eff
GAPO 111	1,122	Andromeda Galaxy	L/T_eff
LGGS J013341.98+302102.0	1,119	Triangulum Galaxy	L/T_eff
LGGS J013307.37+304543.2	1,119	Triangulum Galaxy	L/T_eff
M31-1515	1,112	Andromeda Galaxy	L/T_eff	Within a binary star system with an OB companion.
LGGS J004218.33+412633.9	1,111	Andromeda Galaxy	L/T_eff
LGGS J004102.54+403426.5	1,108	Andromeda Galaxy	L/T_eff
LGGS J013335.90+303344.5	1,104	Triangulum Galaxy	L/T_eff
LGGS J013358.54+303419.9	1,103	Triangulum Galaxy	L/T_eff
LGGS J013414.49+303511.6	1,102	Triangulum Galaxy	L/T_eff
LGGS J013336.64+303532.3	1,102–1,408	Triangulum Galaxy	L/T_eff
LGGS J004259.34+413726.0	1,094	Andromeda Galaxy	L/T_eff
LGGS J004509.98+414627.5	1,089	Andromeda Galaxy	L/T_eff
LGGS J013241.94+302047.5	1,083	Triangulum Galaxy	L/T_eff
LGGS J004034.74+404459.6	1,078	Andromeda Galaxy	L/T_eff
LGGS J004059.50+404542.6	1,071	Andromeda Galaxy	L/T_eff
LGGS J013430.75+303218.8	1,067	Triangulum Galaxy	L/T_eff
LGGS J013412.27+305314.1	1,063–1,066	Triangulum Galaxy	L/T_eff
LGGS J013328.17+304741.5	1,063	Triangulum Galaxy	L/T_eff
LGGS J004524.97+420727.2	1,059	Andromeda Galaxy	L/T_eff
LGGS J013233.77+302718.8	1,058–1,129	Triangulum Galaxy	L/T_eff
LGGS J004125.72+411212.7	1,058	Andromeda Galaxy	L/T_eff
LGGS J004114.18+403759.8	1,058	Andromeda Galaxy	L/T_eff
M33-2747	1,057	Triangulum Galaxy	L/T_eff
LGGS J013307.60+304259.0	1,051	Triangulum Galaxy	L/T_eff
LGGS J004103.67+410211.8	1,047	Andromeda Galaxy	L/T_eff
LGGS J013305.48+303138.5	1,046	Triangulum Galaxy	L/T_eff
LGGS J004442.41+412649.5	1,040	Andromeda Galaxy	L/T_eff
LGGS J013403.87+303753.2	1,040	Triangulum Galaxy	L/T_eff
LGGS J013351.47+303640.3	1,034	Triangulum Galaxy	L/T_eff
LGGS J004306.62+413806.2	1,028	Andromeda Galaxy	L/T_eff
LGGS J013303.54+303201.2	1,027–1,131	Triangulum Galaxy	L/T_eff
LGGS J004234.41+405855.9	1,023	Andromeda Galaxy	L/T_eff
LGGS J004051.31+404421.7	1,022	Andromeda Galaxy	L/T_eff
LGGS J004031.00+404311.1	1,011	Andromeda Galaxy	L/T_eff
LGGS J013406.20+303913.6	1,009	Triangulum Galaxy	L/T_eff
LGGS J013344.10+304425.1	1,007	Triangulum Galaxy	L/T_eff
LGGS J004307.36+405852.2	1,007	Andromeda Galaxy	L/T_eff
LGGS J013407.13+303929.5	994	Triangulum Galaxy	L/T_eff
LGGS J013312.35+303033.9	993	Triangulum Galaxy	L/T_eff
LGGS J013330.05+303145.9	988	Triangulum Galaxy	L/T_eff
LGGS J013350.84+304403.1	984	Triangulum Galaxy	L/T_eff
LGGS J013329.47+301848.3	981	Triangulum Galaxy	L/T_eff
LGGS J004148.74+410843.0	981	Andromeda Galaxy	L/T_eff
LGGS J004415.76+411750.7	977	Andromeda Galaxy	L/T_eff
LGGS J004127.44+411240.7	977	Andromeda Galaxy	L/T_eff
LGGS J013312.75+303946.1	975	Triangulum Galaxy	L/T_eff
LGGS J004027.36+410444.9	973	Andromeda Galaxy	L/T_eff
LGGS J013434.35+302627.3	973	Triangulum Galaxy	L/T_eff
LGGS J013423.29+305655.0	993–972	Triangulum Galaxy	L/T_eff
LGGS J013319.13+303642.5	970	Triangulum Galaxy	L/T_eff
LGGS J004305.77+410742.5	969	Andromeda Galaxy	L/T_eff
LGGS J013403.73+304202.4	965–1,032	Triangulum Galaxy	L/T_eff
LGGS J004346.10+411138.8	962	Andromeda Galaxy	L/T_eff
LGGS J004419.20+412343.7	959	Andromeda Galaxy	L/T_eff
LGGS J013353.91+302641.8	959–1,008	Triangulum Galaxy	L/T_eff
LGGS J013315.23+305329.0	958	Triangulum Galaxy	L/T_eff
LGGS J013315.23+305329.0	956	Triangulum Galaxy	L/T_eff
LGGS J004138.35+412320.7	954	Andromeda Galaxy	L/T_eff
LGGS J004419.45+411749.5	950	Andromeda Galaxy	L/T_eff
LGGS J013413.95+303339.6	948	Triangulum Galaxy	L/T_eff
LGGS J013336.42+303530.9	947	Triangulum Galaxy	L/T_eff
LGGS J004047.82+410936.4	943	Andromeda Galaxy	L/T_eff
LGGS J013258.18+303606.3	943	Triangulum Galaxy	L/T_eff
LGGS J004447.74+413050.0	938	Andromeda Galaxy	L/T_eff
2MASS J01343131+3046088	938	Triangulum Galaxy	L/T_eff
LGGS J004346.18+411515.0	936	Andromeda Galaxy	L/T_eff
LGGS J004304.62+410348.4	936	Andromeda Galaxy	L/T_eff
LGGS J004458.28+413154.3	933	Andromeda Galaxy	L/T_eff
LGGS J004102.82+410422.3	933	Andromeda Galaxy	L/T_eff
LGGS J013344.33+303636.0	932	Triangulum Galaxy	L/T_eff
LGGS J004631.49+421133.1	932	Andromeda Galaxy	L/T_eff
LGGS J013321.44+304045.4	932–1,015	Triangulum Galaxy	L/T_eff
LGGS J013358.04+304900.1	931	Triangulum Galaxy	L/T_eff
LGGS J013314.31+302952.9	1,067–930	Triangulum Galaxy	L/T_eff
LGGS J013315.97+303153.7	929	Triangulum Galaxy	L/T_eff
LGGS J004126.14+403346.5	927	Andromeda Galaxy	L/T_eff
M31-1372	926	Andromeda Galaxy	L/T_eff
LGGS J004347.31+411203.6	925	Andromeda Galaxy	L/T_eff
LGGS J004252.78+405627.5	923	Andromeda Galaxy	L/T_eff
LGGS J013411.54+303312.6	918	Triangulum Galaxy	L/T_eff
LGGS J013357.08+303817.8	918	Triangulum Galaxy	L/T_eff
LGGS J003943.89+402104.6	917	Andromeda Galaxy	L/T_eff
LGGS J004503.35+413026.3	916	Andromeda Galaxy	L/T_eff
LGGS J013338.97+303828.9	915	Triangulum Galaxy	L/T_eff
LGGS J013330.27+303510.6	915	Triangulum Galaxy	L/T_eff
LGGS J004033.06+404303.1	912	Andromeda Galaxy	L/T_eff
LGGS J004357.15+411136.6	911	Andromeda Galaxy	L/T_eff
LGGS J004406.60+411536.6	911	Andromeda Galaxy	L/T_eff
LGGS J013312.38+302453.2	911–952	Triangulum Galaxy	L/T_eff
LGGS J004451.76+420006.0	911	Andromeda Galaxy	L/T_eff
LGGS J013322.82+301910.9	934–911	Triangulum Galaxy	L/T_eff
M31-504	919	Andromeda Galaxy	L/T_eff
LGGS J013355.56+304120.9	908	Triangulum Galaxy	L/T_eff
LGGS J004034.40+403627.4	907	Andromeda Galaxy	L/T_eff
LGGS J003910.56+402545.6	906	Andromeda Galaxy	L/T_eff
LGGS J004142.43+411814.1	906	Andromeda Galaxy	L/T_eff
LGGS J013316.57+303051.9	902	Triangulum Galaxy	L/T_eff
LGGS J013245.59+303518.7	900	Triangulum Galaxy	L/T_eff
LGGS J004034.67+404322.5	898	Andromeda Galaxy	L/T_eff
LGGS J004027.65+405126.7	898	Andromeda Galaxy	L/T_eff
LGGS J004322.75+411101.8	895	Andromeda Galaxy	L/T_eff
LGGS J004116.47+410813.7	895	Andromeda Galaxy	L/T_eff
LGGS J013306.33+303208.2	894	Triangulum Galaxy	L/T_eff
LGGS J004039.12+404252.3	894	Andromeda Galaxy	L/T_eff
LGGS J004433.96+415414.8	893	Andromeda Galaxy	L/T_eff
M31-1414	893	Andromeda Galaxy	L/T_eff
LGGS J013454.31+304109.8	891	Triangulum Galaxy	L/T_eff
LGGS J004030.64+404246.2	890	Andromeda Galaxy	L/T_eff
M33-113	890	Triangulum Galaxy	L/T_eff
LGGS J004252.67+413615.2	889	Andromeda Galaxy	L/T_eff
LGGS J013349.94+302928.8	888	Triangulum Galaxy	L/T_eff
2MASS J01335010+3039106	886	Triangulum Galaxy	L/T_eff
LGGS J013357.37+304558.7	886	Triangulum Galaxy	L/T_eff
LGGS J013338.77+303532.9	885	Triangulum Galaxy	L/T_eff
LGGS J013359.20+303212.1	884	Triangulum Galaxy	L/T_eff
LGGS J013340.42+303131.3	880	Triangulum Galaxy	L/T_eff
LGGS J004511.40+413717.8	880	Andromeda Galaxy	L/T_eff
LGGS J013352.16+303902.2	880	Triangulum Galaxy	L/T_eff
LGGS J004219.25+405116.4	880	Andromeda Galaxy	L/T_eff
LGGS J004331.90+411145.0	880	Andromeda Galaxy	L/T_eff
2MASS J01333718+3038206	879	Triangulum Galaxy	L/T_eff
LGGS J013415.42+302816.4	876	Triangulum Galaxy	L/T_eff
LGGS J013345.01+302105.1	876	Triangulum Galaxy	L/T_eff
LGGS J004107.23+411636.8	870	Andromeda Galaxy	L/T_eff
LGGS J013417.83+303356.0	867	Triangulum Galaxy	L/T_eff
LGGS J004120.25+403838.1	867	Andromeda Galaxy	L/T_eff
LGGS J004402.38+412114.9	866	Andromeda Galaxy	L/T_eff
2MASS J01334194+3038565	866	Triangulum Galaxy	L/T_eff
LGGS J013309.10+303017.8	865–933	Triangulum Galaxy	L/T_eff
LGGS J004429.36+412307.8	862	Andromeda Galaxy	L/T_eff
LGGS J013310.20+303314.4	861	Triangulum Galaxy	L/T_eff
LGGS J004404.60+412729.8	860	Andromeda Galaxy	L/T_eff
LGGS J003907.69+402859.5	860	Andromeda Galaxy	L/T_eff
LGGS J004219.64+412736.1	859	Andromeda Galaxy	L/T_eff
LGGS J003949.31+402049.1	859	Andromeda Galaxy	L/T_eff
LGGS J013310.16+302726.3	855	Triangulum Galaxy	L/T_eff
LGGS J004036.97+403412.4	855	Andromeda Galaxy	L/T_eff
LGGS J013343.68+304450.7	855	Triangulum Galaxy	L/T_eff
LGGS J013409.10+303351.8	854	Triangulum Galaxy	L/T_eff
LGGS J013407.11+303918.7	854	Triangulum Galaxy	L/T_eff
LGGS J004107.11+411635.6	854	Andromeda Galaxy	L/T_eff
LGGS J013400.01+304622.2	852	Triangulum Galaxy	L/T_eff
LGGS J013327.14+303917.4	851	Andromeda Galaxy	L/T_eff
LGGS J013339.79+304032.2	850	Triangulum Galaxy	L/T_eff
LGGS J004501.30+413922.5	850	Andromeda Galaxy	L/T_eff
LGGS J004450.87+412924.3	850	Andromeda Galaxy	L/T_eff
LGGS J004040.69+405908.1	850	Andromeda Galaxy	L/T_eff
LGGS J003942.92+402051.1	850	Andromeda Galaxy	L/T_eff
2MASS J01335092+3040481	850	Triangulum Galaxy	L/T_eff
LGGS J013315.19+305319.8	847	Triangulum Galaxy	L/T_eff
LGGS J013416.89+305158.3	845–920	Triangulum Galaxy	L/T_eff
LGGS J004415.17+415640.6	845	Andromeda Galaxy	L/T_eff
LGGS J004424.94+412322.3	844	Andromeda Galaxy	L/T_eff
LGGS J013331.93+301952.9	838	Triangulum Galaxy	L/T_eff
LGGS J004406.16+414846.4	836	Andromeda Galaxy	L/T_eff
M33-453	836	Triangulum Galaxy	L/T_eff
LGGS J013445.65+303235.4	835	Triangulum Galaxy	L/T_eff
LGGS J004109.39+404901.9	834	Andromeda Galaxy	L/T_eff
LGGS J004423.83+414928.6	833	Andromeda Galaxy	L/T_eff
LGGS J013242.31+302113.9	833	Triangulum Galaxy	L/T_eff
LGGS J004030.48+404051.1	833	Andromeda Galaxy	L/T_eff
LGGS J004118.29+404940.3	832	Andromeda Galaxy	L/T_eff
LGGS J013414.17+304701.9	831	Triangulum Galaxy	L/T_eff
LGGS J013328.89+303058.0	831	Triangulum Galaxy	L/T_eff
LGGS J004107.70+403702.3	831	Andromeda Galaxy	L/T_eff
LGGS J003925.67+404111.8	831	Andromeda Galaxy	L/T_eff
LGGS J004306.95+410038.2	826	Andromeda Galaxy	L/T_eff
LGGS J013408.81+304637.8	826	Triangulum Galaxy	L/T_eff
LGGS J013345.22+303138.2	826	Triangulum Galaxy	L/T_eff
LGGS J003950.65+402531.8	825	Andromeda Galaxy	L/T_eff
LGGS J013427.65+305642.4	825	Triangulum Galaxy	L/T_eff
M33-374	824	Triangulum Galaxy	L/T_eff
LGGS J013500.04+303703.8	823	Triangulum Galaxy	L/T_eff
LGGS J004108.42+410655.3	822	Andromeda Galaxy	L/T_eff
LGGS J013340.77+302108.7	821–820	Triangulum Galaxy	L/T_eff
LGGS J004458.57+412925.1	821	Andromeda Galaxy	L/T_eff
LGGS J013309.97+302727.5	973	Triangulum Galaxy	L/T_eff
LGGS J004124.81+411206.1	819	Andromeda Galaxy	L/T_eff
LGGS J013401.65+303128.7	819	Triangulum Galaxy	L/T_eff
LGGS J013455.65+304349.0	816	Triangulum Galaxy	L/T_eff
LGGS J013310.60+302301.8	816	Triangulum Galaxy	L/T_eff
LGGS J004544.71+414331.9	815	Andromeda Galaxy	L/T_eff
LGGS J004119.35+410836.4	813	Andromeda Galaxy	L/T_eff
LGGS J013436.65+304517.1	814–812	Triangulum Galaxy	L/T_eff
LGGS J013301.79+303954.3	812	Triangulum Galaxy	L/T_eff
LGGS J013328.85+310041.7	810–909	Triangulum Galaxy	L/T_eff
LGGS J013401.08+303432.2	809	Triangulum Galaxy	L/T_eff
LGGS J004036.45+403613.1	808	Andromeda Galaxy	L/T_eff
LGGS J004521.53+413758.6	807	Andromeda Galaxy	L/T_eff
LGGS J004432.38+415149.9	807	Andromeda Galaxy	L/T_eff
LGGS J013306.95+303506.1	807	Triangulum Galaxy	L/T_eff	Contradictory classification in literature, it has been considered a candidate LBV, a RSG or a BSG.
LGGS J013242.26+302114.1	807	Triangulum Galaxy	L/T_eff
LGGS J013321.94+304112.0	806–829	Triangulum Galaxy	L/T_eff
LGGS J013304.56+303043.2	804	Triangulum Galaxy	L/T_eff
LGGS J004331.73+414223.0	803	Andromeda Galaxy	L/T_eff
LGGS J004044.17+410729.0	803	Andromeda Galaxy	L/T_eff
LGGS J013352.83+305605.2	803	Triangulum Galaxy	L/T_eff
LGGS J013343.30+303318.9	873–803	Triangulum Galaxy	L/T_eff
LGGS J013342.61+303534.7	800	Triangulum Galaxy	L/T_eff
LGGS J013326.90+310054.2	800–909	Triangulum Galaxy	L/T_eff
M33-920	799	Triangulum Galaxy	L/T_eff
LGGS J013300.94+303404.3	798	Triangulum Galaxy	L/T_eff
LGGS J013416.06+303730.0	798	Triangulum Galaxy	L/T_eff
LGGS J004503.83+413737.0	797	Andromeda Galaxy	L/T_eff
M33-255	797	Triangulum Galaxy	L/T_eff
LGGS J004438.83+415253.0	794	Andromeda Galaxy	L/T_eff
LGGS J004235.88+405442.2	794	Andromeda Galaxy	L/T_eff
LGGS J004335.28+410959.7	794	Andromeda Galaxy	L/T_eff
LGGS J013402.32+303828.4	793	Triangulum Galaxy	L/T_eff
LGGS J004125.55+405034.8	792	Andromeda Galaxy	L/T_eff
M31-2338	792	Andromeda Galaxy	L/T_eff
LGGS J013507.43+304132.6	791	Triangulum Galaxy	L/T_eff
LGGS J013353.25+303918.7	791	Triangulum Galaxy	L/T_eff
LGGS J004308.71+410604.5	790	Andromeda Galaxy	L/T_eff
LGGS J013417.17+304826.6	789	Triangulum Galaxy	L/T_eff
LGGS J013310.71+302714.9	789–884	Triangulum Galaxy	L/T_eff
LGGS J013432.36+304159.0	788	Triangulum Galaxy	L/T_eff
LGGS J004356.23+414641.8	788	Andromeda Galaxy	L/T_eff
LGGS J013340.77+302108.7	788	Triangulum Galaxy	L/T_eff
LGGS J013346.61+304125.4	786	Triangulum Galaxy	L/T_eff
M31-2420	786	Andromeda Galaxy	L/T_eff
LGGS J004447.08+412801.7	785	Andromeda Galaxy	L/T_eff
LGGS J004255.95+404857.5	785	Andromeda Galaxy	L/T_eff
LGGS J013231.91+302329.1	783	Triangulum Galaxy	L/T_eff
M31-2252	783	Andromeda Galaxy	L/T_eff
LGGS J004110.32+410433.4	782	Andromeda Galaxy	L/T_eff
LGGS J004159.06+405718.7	780	Andromeda Galaxy	L/T_eff
M31-1494	758	Andromeda Galaxy	L/T_eff
LGGS J004241.10+413142.3	775	Andromeda Galaxy	L/T_eff
LGGS J013401.88+303858.3	776	Triangulum Galaxy	L/T_eff
LGGS J013445.12+305858.9	773	Triangulum Galaxy	L/T_eff
LGGS J004030.92+404329.3	773	Andromeda Galaxy	L/T_eff
M31-1410	772	Andromeda Galaxy	L/T_eff
LGGS J013359.57+303413.5	771	Triangulum Galaxy	L/T_eff
LGGS J004353.97+411255.6	771	Andromeda Galaxy	L/T_eff
LGGS J004029.03+403412.6	770	Andromeda Galaxy	L/T_eff
LGGS J004526.24+420047.5	767	Andromeda Galaxy	L/T_eff
LGGS J013348.44+302029.8	767	Triangulum Galaxy	L/T_eff
LGGS J004552.15+421003.5	767	Andromeda Galaxy	L/T_eff
M31-689	767	Andromeda Galaxy	L/T_eff
LGGS J013320.75+303204.8	764	Triangulum Galaxy	L/T_eff
LGGS J013416.28+303353.5	763–801	Triangulum Galaxy	L/T_eff
LGGS J013357.91+303338.9	763	Triangulum Galaxy	L/T_eff
LGGS J013253.14+303515.3	762	Triangulum Galaxy	L/T_eff
LGGS J004051.18+403053.4	762	Andromeda Galaxy	L/T_eff
LGGS J013402.57+303746.3	762	Triangulum Galaxy	L/T_eff
LGGS J013352.15+304006.4	762	Triangulum Galaxy	L/T_eff
LGGS J004427.07+415203.0	762	Andromeda Galaxy	L/T_eff
LGGS J004233.23+405917.0	762	Andromeda Galaxy	L/T_eff
LGGS J004156.96+405720.8	761	Andromeda Galaxy	L/T_eff
LGGS J004117.14+410843.7	761	Andromeda Galaxy	L/T_eff
LGGS J004124.80+411634.7	760, 1,205, 1,240	Andromeda Galaxy	L/T_eff
LGGS J004109.61+404920.4	761	Andromeda Galaxy	L/T_eff
LGGS J003930.09+402313.0	759	Andromeda Galaxy	L/T_eff
LGGS J013324.71+303423.7	758	Triangulum Galaxy	L/T_eff
LGGS J013317.40+303210.8	758	Triangulum Galaxy	L/T_eff
LGGS J013411.83+304631.0	756	Triangulum Galaxy	L/T_eff
LGGS J004417.75+420039.1	755	Andromeda Galaxy	L/T_eff
LGGS J004454.50+413007.8	755	Andromeda Galaxy	L/T_eff
LGGS J013348.77+304526.8	754	Triangulum Galaxy	L/T_eff
LGGS J004019.69+404912.2	754	Andromeda Galaxy	L/T_eff
LGGS J004340.32+411157.1	753	Andromeda Galaxy	L/T_eff
LGGS J013304.02+303215.2	753	Triangulum Galaxy	L/T_eff
LGGS J013409.16+303846.9	752	Triangulum Galaxy	L/T_eff
LGGS J013459.81+304156.9	751–765	Triangulum Galaxy	L/T_eff
LGGS J013334.82+302029.1	751–930	Triangulum Galaxy	L/T_eff
LGGS J013400.71+303422.3	750	Triangulum Galaxy	L/T_eff
LGGS J004224.65+412623.7	749	Andromeda Galaxy	L/T_eff
LGGS J013414.88+303401.2	749	Triangulum Galaxy	L/T_eff
LGGS J004343.33+414529.5	749	Andromeda Galaxy	L/T_eff
LGGS J004034.76+403648.9	749	Andromeda Galaxy	L/T_eff
LGGS J013353.53+303418.7	749	Triangulum Galaxy	L/T_eff
LGGS J004501.84+420259.2	747	Andromeda Galaxy	L/T_eff
LGGS J013409.70+303916.2	744	Triangulum Galaxy	L/T_eff
LGGS J013345.71+303609.8	744	Triangulum Galaxy	L/T_eff
LGGS J004342.75+411442.8	743	Andromeda Galaxy	L/T_eff
M31-1621	743	Andromeda Galaxy	L/T_eff
LGGS J013333.32+303147.2	741	Triangulum Galaxy	L/T_eff
LGGS J013338.97+303506.1	741	Triangulum Galaxy	L/T_eff
LGGS J013303.61+302841.5	741	Triangulum Galaxy	L/T_eff
LGGS J004201.12+412516.0	737	Andromeda Galaxy	L/T_eff
LGGS J004341.35+411213.8	734	Andromeda Galaxy	L/T_eff
LGGS J013438.76+304608.1	734	Triangulum Galaxy	L/T_eff
LGGS J013402.33+301749.2	734–786	Triangulum Galaxy	L/T_eff
2MASS J01334180+3040207	732	Triangulum Galaxy	L/T_eff
LGGS J013354.32+301724.6	732–854	Triangulum Galaxy	L/T_eff
LGGS J013334.23+303400.3	732	Triangulum Galaxy	L/T_eff
LGGS J013357.60+304113.3	730	Triangulum Galaxy	L/T_eff
LGGS J004614.57+421117.4	730	Andromeda Galaxy	L/T_eff
LGGS J004120.96+404125.3	730	Andromeda Galaxy	L/T_eff
LGGS J004228.46+405519.0	728	Andromeda Galaxy	L/T_eff
LGGS J004024.52+404444.8	728	Andromeda Galaxy	L/T_eff
LGGS J013349.75+304459.8	727	Triangulum Galaxy	L/T_eff
LGGS J013306.88+303004.6	727	Triangulum Galaxy	L/T_eff
LGGS J004358.00+412114.1	727	Andromeda Galaxy	L/T_eff
LGGS J004147.27+411537.8	727	Andromeda Galaxy	L/T_eff
LGGS J013407.23+304158.8	725–833	Triangulum Galaxy	L/T_eff
LGGS J004519.82+415531.9	725	Andromeda Galaxy	L/T_eff
LGGS J004410.84+411538.8	725	Andromeda Galaxy	L/T_eff
LGGS J013407.38+305935.0	724	Triangulum Galaxy	L/T_eff
LGGS J004438.75+415553.6	724	Andromeda Galaxy	L/T_eff
LGGS J004324.16+411228.3	723	Andromeda Galaxy	L/T_eff
LGGS J004059.58+403815.6	723	Andromeda Galaxy	L/T_eff
LGGS J013327.40+304126.4	721	Triangulum Galaxy	L/T_eff
LGGS J013243.72+301912.5	721–783	Triangulum Galaxy	L/T_eff
Gaia DR3 303379932695513216	720	Triangulum Galaxy	L/T_eff
LGGS J004558.92+414642.1	720	Andromeda Galaxy	L/T_eff
LGGS J004103.46+403633.2	717	Andromeda Galaxy	L/T_eff
LGGS J013324.89+301754.3	717	Triangulum Galaxy	L/T_eff
LGGS J004015.18+405947.7	716	Andromeda Galaxy	L/T_eff
LGGS J013414.53+303557.7	715	Triangulum Galaxy	L/T_eff
LGGS J013351.89+303853.5	715	Triangulum Galaxy	L/T_eff
LGGS J004458.82+413050.4	715	Andromeda Galaxy	L/T_eff
LGGS J013352.51+303942.2	715	Triangulum Galaxy	L/T_eff
LGGS J004124.91+411133.1	715	Andromeda Galaxy	L/T_eff
LGGS J004604.18+415135.4	713	Andromeda Galaxy	L/T_eff
LGGS J013305.17+303119.8	711	Triangulum Galaxy	L/T_eff
LGGS J004517.25+413948.2	711	Andromeda Galaxy	L/T_eff
LGGS J013349.86+303246.1	710–795	Triangulum Galaxy	L/T_eff	A yellow supergiant.
2MASS J01335929+3034435	709	Triangulum Galaxy	L/T_eff
LGGS J004230.32+405624.1	708	Andromeda Galaxy	L/T_eff
LGGS J004101.02+403506.1	708	Andromeda Galaxy	L/T_eff
LGGS J004119.21+411237.2	707	Andromeda Galaxy	L/T_eff
LGGS J004606.25+415018.9	707	Andromeda Galaxy	L/T_eff
LGGS J013442.05+304540.2	707–707	Triangulum Galaxy	L/T_eff
LGGS J013431.84+302721.5	707–717	Triangulum Galaxy	L/T_eff
LGGS J013304.68+304456.0	707–739	Triangulum Galaxy	L/T_eff
LGGS J004432.27+415158.4	705	Andromeda Galaxy	L/T_eff
2MASS J01335131+3039149	704	Triangulum Galaxy	L/T_eff
LGGS J013339.46+302113.0	703–748	Triangulum Galaxy	L/T_eff
LGGS J003935.36+401946.4	703	Andromeda Galaxy	L/T_eff
LGGS J013343.03+303433.5	702	Triangulum Galaxy	L/T_eff
LGGS J004505.87+413452.3	702	Andromeda Galaxy	L/T_eff
LGGS J013414.18+305248.0	701–731	Triangulum Galaxy	L/T_eff
LGGS J013402.53+304107.7	701–749	Triangulum Galaxy	L/T_eff
LGGS J013340.80+304248.5	701–814	Triangulum Galaxy	L/T_eff
LGGS J013312.59+303252.5	701	Triangulum Galaxy	L/T_eff
The following well-known stars are listed for the purpose of comparison.
Var 83	150	Triangulum Galaxy	L/T_eff	A luminous blue variable and one of the most luminous stars in M33.

Other galaxies (within the Local Group)

List of the largest known stars in other galaxies (within the Local Group)
Star name	Solar radius (R_☉)	Galaxy	Method	Notes
NGC 6822-52	1,053	NGC 6822	L/T_eff
Sextans A 10	995±130	Sextans A	L/T_eff
NGC 6822-RSG 19	928	NGC 6822	L/T_eff
WLM 02	883+284 −167	WLM	L/T_eff
Sextans A 5	870±145	Sextans A	L/T_eff
NGC 6822-RSG 26	866	NGC 6822	L/T_eff
NGC 6822-70	860	NGC 6822	L/T_eff
NGC 6822-RSG 12	837	NGC 6822	L/T_eff
NGC 6822-55	830	NGC 6822	L/T_eff
NGC 6822-103	787	NGC 6822	L/T_eff
Leo A 7	785	Leo A	L/T_eff
IC 10-26089	769	IC 10	L/T_eff
NGC 6822-RSG 9	763	NGC 6822	L/T_eff
NGC 6822-RSG 6	712	NGC 6822	L/T_eff
Sextans A 7	710±100	Sextans A	L/T_eff
The following well-known stars are listed for the purpose of comparison.
AT 2018akx	211	NGC 3109	L/T_eff	It is a LBV, and is the second brightest star in NGC 3109.
NGC 6822-WR 12	3.79	NGC 6822	L/T_eff	A Wolf-Rayet star, one of the hottest known stars.

Outside the Local Group (inside the Virgo supercluster)

List of the largest known stars in galaxies outside the Local Group inside the Virgo supercluster
Star name	Solar radius (R_☉)	Galaxy	Group	Method	Notes
NGC 300-125	1,504+176 −157	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 247-154	1,503+79 −75	NGC 247	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 7793-34	1,392+157 −160	NGC 7793	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-40	1,286 ⁺¹¹⁶ ₋₁₀₆	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 2403 V14	1,260	NGC 2403	M81 Group	L/T_eff	A F-type yellow hypergiant.
NGC 300-154	1,200 ⁺¹²³ ₋₁₁₁	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-114	1,181 ⁺¹²³ ₋₁₁₁	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-199	1,181 ⁺¹²⁰ ₋₁₀₉	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-153	1,173 ⁺¹²⁰ ₋₁₀₉	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-150	1,167 ⁺¹¹⁹ ₋₁₀₇	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 253-2006	1,167 ⁺⁷⁵ ₋₇₀	Sculptor Galaxy	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
SPIRITS 14atl	1,134–1,477	Messier 83	Centaurus A/M83 Group	L/T_eff
NGC 300-59	1,133 ⁺¹⁴⁶ ₋₁₂₉	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 7793-86	1,127 ⁺⁹⁴ ₋₁₀₉	NGC 7793	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-263	1,108 ⁺¹¹³ ₋₁₀₂	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 247-447	1,101 ⁺⁵⁸ ₋₅₆	NGC 247	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
SPIRITS 15ahp	1,098	NGC 2403	M81 Group	L/T_eff
NGC 300-240	1,088 ⁺¹¹² ₋₁₀₁	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 7793-86	1,078 ⁺⁶⁹ ₋₆₄	NGC 7793	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-173	1,063 ⁺⁸⁴ ₋₇₇	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-340	1,036 ⁺¹⁰⁵ ₋₉₅	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-346	1,023 ⁺¹³⁹ ₋₁₂₈	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 247-533	1,004 ⁺⁶⁶ ₋₆₂	NGC 247	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-351	992 ⁺¹¹⁵ ₋₁₀₂	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-524	987 ⁺⁷⁷ ₋₇₂	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-135	964 ⁺⁹⁹ ₋₈₉	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-93	955 ⁺⁴⁹ ₋₄₇	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 7793-539	948	NGC 7793	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-87	948 ⁺¹⁰⁹ ₋₉₈	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-146	921 ⁺⁴⁹ ₋₄₆	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-273	921 ⁺⁹⁴ ₋₈₅	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-186	915 ⁺⁷² ₋₆₅	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-200	905 ⁺⁵⁹ ₋₅₅	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-152	895 ⁺⁵⁸ ₋₅₄	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-413	861 ⁺⁶⁶ ₋₆₁	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-174	856 ⁺⁶⁵ ₋₆₁	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
M81 10584-25-2	851	Messier 81	M81 Group	L/T_eff	A yellow hypergiant.
M81 10584-13-3	843	Messier 81	M81 Group	L/T_eff	A yellow hypergiant.
NGC 55-75	836 ⁺⁸¹ ₋₁₁₁	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-545	824 ⁺¹⁰⁴ ₋₉₃	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 247-2912	821 ⁺⁵⁴ ₋₅₁	NGC 247	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-216	801 ⁺¹⁰² ₋₈₉	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 247-1471	798 ⁺⁵² ₋₄₈	NGC 247	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-499	796 ⁺⁸⁹ ₋₁₀₈	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-379	744 ⁺⁵⁶ ₋₅₂	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-838	744 ⁺⁵⁷ ₋₅₃	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-149	738 ⁺⁴⁷ ₋₅₅	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-194	730 ⁺⁴⁶ ₋₄₄	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
[GKE2015] 7	729	NGC 300	NGC 55 Group	L/T_eff
NGC 55-270	728 ⁺³⁸ ₋₃₆	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-1047	724 ⁺⁶⁵ ₋₅₉	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 247-3231	719 ⁺⁵⁶ ₋₅₁	NGC 247	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 247-2966	719 ⁺⁵⁶ ₋₅₂	NGC 247	Sculptor Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 55-245	717 ⁺⁵⁵ ₋₅₀	NGC 55	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-1068	716 ⁺⁶⁴ ₋₅₈	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
NGC 300-1081	712 ⁺⁵⁴ ₋₅₁	NGC 300	NGC 55 Group	L/T_eff	Effective temperature is based on Titanium(II) oxide lines, which often results in lower values, therefore increasing the radius.
The following well-known stars are listed for the purpose of comparison.
Holmberg IX V1 A	337	Holmberg IX	M81 Group	L/T_eff	Primary star of a yellow supergiant contact binary.
Holmberg IX V1 B	306	Holmberg IX	M81 Group	L/T_eff	Secondary star of a yellow supergiant contact binary.
NGC 2363-V1	194–356	NGC 2366	M81 Group	L/T_eff

Outside the Virgo supercluster

Note that this list does not include the candidate JWST dark stars, with estimated radii of up to 61 astronomical units (13,000 R_☉) or quasi-stars, with theoretical models suggesting that they could reach radii of up to 40,700 solar radii (189 au).

Star name	Solar radius (R_☉)	Galaxy	Group	Method	Notes
W2 A	1,182	Warhol Arc	MACS J0416.1-2403	L/T_eff	W2 A is the primary star in a binary system consisting of a red supergiant and a B-type supergiant, located at redshift z = 0.94.
Quyllur	965		ACT-CL J0102-4915	L/T_eff	Likely the first red supergiant star at cosmological distances and is also discovered by James Webb Space Telescope.
The following well-known stars are listed for the purpose of comparison.
Godzilla	430–2,365	Sunburst galaxy	PSZ1 G311.65-18.48	L/T_eff	The most luminous known star.
Mothra	271	LS1	MACS J0416.1-2403	L/T_eff	A binary star at cosmological distances.

Transient events

During some transient events, such as red novae or LBV eruptions the star's radius can increase by a significant amount.

List of largest stars during transient events
Star or transient event name	Solar radius (R_☉)	Year	Galaxy	Group	Method	Notes
AT 2017jfs	>33,000	2017	NGC 4470		L/T_eff
SNhunt151	16,700	2014	UGC 3165	LDC 331	L/T_eff
SN 2015bh	16,400±2,600	2015	NGC 2770	LDC 616	L/T_eff
AT 2021biy	13,400±3,500	2022	NGC 4631	NGC 4631 Group	L/T_eff
AT 2018hso	10,350	2018	NGC 3729	M109 Group	L/T_eff
M101 OT2015-1	7,800	2015	Pinwheel Galaxy	M101 Group	L/T_eff
AT 2023clx	6,800	2023	NGC 3799	nest 101314	L/T_eff
M51 OT2019-1	5,500	2019	Whirlpool Galaxy	M51 Group	L/T_eff
η Carinae	4,319 – 6,032	1845	Milky Way	Local Group	L/T_eff	During the outburst, the star became the second brightest star in sky, reaching an apparent magnitude of between −0.8 and −1.0.
AT 2010dn	4,130	2010	NGC 3180	LDC 743	L/T_eff
SN 2011fh	3,980	2011	NGC 4806	Abell 3528	L/T_eff
AT 2014ej	3,600	2014	NGC 7552	Grus Quartet	L/T_eff
V838 Monocerotis	3,190	2002	Milky Way	Local Group	L/T_eff
SN2008S	3,020	2008	NGC 6946	NGC 6946 Group	L/T_eff
SNhunt120	2,900	2012	NGC 5775	Virgo Cluster	L/T_eff
AT 2017be	2,000	2017	NGC 2537		L/T_eff
M31 RV	2,000	1988	Andromeda Galaxy	Local Group	L/T_eff
PHL 293B star	1,348 – 1,463	2002	PHL 293B		L/T_eff
SNhunt248	~850	2014	NGC 5806	NGC 5846 Group	L/T_eff
SN 2002kg	704	2002	NGC 2403	M81 Group	L/T_eff
R71	500	2012	Large Magellanic Cloud	Local Group	L/T_eff
SN 2000ch	500	2000	NGC 3432	LDC 743	L/T_eff
Godzilla	430 – 2,365	2015	Sunburst galaxy		L/T_eff
AT 2016blu	~330	2012 – 2022	NGC 4559	Coma I Group	L/T_eff	19 outbursts were detected between 2012 and 2022. The star was likely relatively stable the decade before since no outbursts were detected from 1999 – 2009.

SN Progenitors

List of largest supernova progenitors
Star or supernova name	Solar radius (R_☉)	Year	Galaxy	Group	Method	Notes
SN 2025pht	1,850 ± 340 – 2,620 ± 480	2025	NGC 1637		L/T_eff
N6946-BH1	1,765	2008	NGC 6946	LDC 1412	L/T_eff	Not a true supernova, but a failed supernova.
SN 2020xva	1,520	2020	SDSS J173209.23+533908.4		L/T_eff
SN 2019ust	1,440	2019	UGC 548	[TKT2016] 54	L/T_eff
SN 2021ibn	1,200	2021	2MASX J08501445+3701127		L/T_eff
SN 2020afdi	1,200	2020	NGC 5836		L/T_eff
SN 2002hh	1,184-1,904	2002	NGC 6946	LDC 1412	L/T_eff
SN 2018fif	1,174	2018	UGC 85	LGG 485	L/T_eff
SN 1999an	1,131-1,492	1999	IC 755	Virgo Cluster	L/T_eff
SN 2019eoh	1,100±130	2019	IC 4145		L/T_eff
SN 2017eaw	1,000-2,000	2017	NGC 6946	LDC 1412	L/T_eff
SN 2020faa	1,000	2020	2MASS J14470904+7244157		L/T_eff
SN 2023ixf	912+227 −222–1,060±30	2023	Pinwheel galaxy	M101 Group	L/T_eff
SN 2004et	893-976	2004	NGC 6946	LDC 1412	L/T_eff
SN 2019oxn	780±120	2019	SDSS J175113.25+512300.1		L/T_eff
SN 2018aoq	742	2018	NGC 4151	LDC 867	L/T_eff
NGC3021-CANDIDATE-1	722	2005	NGC 3021	LDC 676	L/T_eff	Not a true supernova and was a failed supernova.
SN 1999br	717-945	1999	NGC 4900	Virgo Cluster	L/T_eff
SN 2020jfo	700±10	2020	Messier 61	Virgo Cluster	L/T_eff

Largest stars by apparent size

The following list include the largest stars by their apparent size (angular diameter) as seen from Earth. The unit of measurement is the milliarcsecond (mas), equivalent to 10⁻³ arcseconds. Stars with angular diameters larger than 13 milliarcseconds are included.

List of largest stars by apparent size (angular diameter)
Name	Angular diameter (mas)	Angular diameter type	Distance (light-years)	Spectral type	Notes
Sun	2,000,000		0.000016	G2V	The largest star by angular diameter.
R Doradus	51.18±1.24	LD	179±10	M8III:e	The largest star by angular diameter apart from the Sun.
Betelgeuse (α Orionis)	42.28±0.43	LD	408–540⁺⁹⁸ ₋₄₉	M1-M2Ia-Iab
Antares (α Scorpii A)	37.31±0.09	LD	553.5±93.9	M1.5Iab
Mira (ο Ceti)	28.9±0.3 – 34.9±0.4	Ross	299±33	M5-M9IIIe	The angular diameter vary during Mira's pulsations.
Tiaki (β Gruis)	28.8±0.6	?	177±4	M4.5III
Gacrux (γ Crucis)	24.7	?	88.6±0.4	M3.5III
Rasalgethi (α Herculis)	23.95±5.03	Est	359±52	M5Ib-II
R Hydrae	23.7±1	?	482±33	M6-9e
Arcturus (α Boötis)	21.06±0.17	LD	36.8	K1.5IIIFe-0.5
π¹ Gruis	21	?	535	S5,7
Aldebaran (α Tauri)	20.58–21.1	LD	65.3±1	K5+III
GY Aquilae	20.46	?	1108±98	M8
θ Apodis	18.1	?	389±17	M6.5III
R Lyrae	18.016±0.224	LD	310⁺¹⁰ ₋₇	M4.5III
Scheat (β Pegasi)	16.75±0.24	Ross	196±2	M2.5II-III
Gorgonea Tertia (ρ Persei)	16.555±0.166	LD	308±7	M4+IIIa
SW Virginis	16.11±0.13–16.8±0.34	UD	527±46.9	M7III:
R Aquarii	15.61±0.8 – 16.59±1.03	LD	711⁺³⁹ ₋₃₆	M6.5–M8.5e
g Herculis	15.2±0.5 – 19.09±0.19	LD	385±10	M6-III
RS Cancri	15.1±0.5 – 17.2±0.4	LD	490±40	M6S
Tejat (μ Geminorum)	15.118±0.151	LD	230±10	M3IIIab
R Leonis Minoris	14.4±0.87	LD	942⁺³³ ₋₄₇	M6.5-9e
S Cephei	14.29±2.28	LD	1591⁺⁴⁹ ₋₄₆	C7,3e
T Cassiopeiae	14.22±0.73	LD	893⁺⁴⁹ ₋₄₆	M7-9e
μ Cephei (Herschel's Garnet Star)	14.11±0.60		1370⁺¹⁹⁰ ₋₁₄₀	M2Ia
Mirach (β Andromedae)	13.749±0.137	LD	199±9	M0+IIIa
Menkar (α Ceti)	13.238±0.056	LD	249±8	M1.5IIIa	Other measurements include 12.2±0.04 mas.
V Cygni	13.1±0.208 – 14.84±2.37	LD	1747⁺¹⁶³ ₋₁₃₇	C7,4eJ

Notes

1 2 3 4 5 6
Methods for calculating the radius:
- AD: radius calculated from angular diameter and distance
- L/T_eff: radius calculated from bolometric luminosity and effective temperature
- SEIS: radius obtained from seismic data
- OD: radius obtained from optical depth
1 2 3 4 5 6 At the J2000 epoch
↑ Luminosities are calculated using the apparent bolometric magnitude and distances in the following equation:
10^{0.4 • (4.74−(m_bol+5−5 • log(dist)))}
↑ Calculated using a distance of 432 parsecs and an angular diameter of 2.31 milliarcseconds.
↑ Legend:
UD=Uniform disk diameter
LD=Limb-darkened diameter
Ross=Rosseland diameter
Est = Estimated using distance and physical radius

References

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↑ SIMBAD.
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1 2 3 4 5 6 7 Mozurkewich, D.; Armstrong, J. T.; Hindsley, R. B.; Quirrenbach, A.; Hummel, C. A.; Hutter, D. J.; Johnston, K. J.; Hajian, A. R.; Elias II, Nicholas M.; Buscher, D. F.; Simon, R. S. (November 2003). "Angular Diameters of Stars from the Mark III Optical Interferometer". The Astronomical Journal. 126 (5): 2502–2520. Bibcode:2003AJ....126.2502M. doi:10.1086/378596. ISSN 0004-6256.
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↑ Paladini, C.; Klotz, D.; Sacuto, S.; Lagadec, E.; Wittkowski, M.; Richichi, A.; Hron, J.; Jorissen, A.; Groenewegen, M. A. T.; Kerschbaum, F.; Verhoelst, T.; Rau, G.; Olofsson, H.; Zhao-Geisler, R.; Matter, A. (1 April 2017). "The VLTI/MIDI view on the inner mass loss of evolved stars from the Herschel MESS sample". Astronomy and Astrophysics. 600: A136. arXiv:1701.05407. Bibcode:2017A&A...600A.136P. doi:10.1051/0004-6361/201527210. ISSN 0004-6361.
↑ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
1 2 3 4 5 6 Bailer-Jones, C. A. L.; Rybizki, J.; Fouesneau, M.; Demleitner, M.; Andrae, R. (2021). "Estimating Distances from Parallaxes. V. Geometric and Photogeometric Distances to 1.47 Billion Stars in Gaia Early Data Release 3". The Astronomical Journal. 161 (3): 147. arXiv:2012.05220. Bibcode:2021AJ....161..147B. doi:10.3847/1538-3881/abd806. S2CID 228063812. Data about this star can be seen here.
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1 2 3 4 5 6 7 Richichi, A.; Percheron, I.; Khristoforova, M. (1 February 2005). "CHARM2: An updated Catalog of High Angular Resolution Measurements". Astronomy and Astrophysics. 431 (2): 773–777. Bibcode:2005A&A...431..773R. doi:10.1051/0004-6361:20042039. ISSN 0004-6361.
↑ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
↑ Min, Cheulhong; Matsumoto, Naoko; Kim, Mi Kyoung; Hirota, Tomoya; Shibata, Katsunori M.; Cho, Se-Hyung; Shizugami, Makoto; Honma, Mareki (1 April 2014). "Accurate Parallax Measurement toward the Symbiotic Star R Aquarii". Publications of the Astronomical Society of Japan. 66 (2): 38. arXiv:1401.5574. doi:10.1093/pasj/psu003. ISSN 2053-051X.
↑ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
↑ Perrin, G.; Ridgway, S. T.; Verhoelst, T.; Schuller, P. A.; Traub, W. A.; Millan-Gabet, R.; Lacasse, M. G. (1 June 2005). "Study of molecular layers in the atmosphere of the supergiant star μ Cep by interferometry in the K band". Astronomy & Astrophysics. 436 (1): 317–324. arXiv:astro-ph/0502415. Bibcode:2005A&A...436..317P. doi:10.1051/0004-6361:20042313. ISSN 0004-6361.
↑ "HD 6860 Overview". NASA Exoplanet Archive. Retrieved 7 June 2024.
↑ Wittkowski, M.; et al. (December 2006), "Tests of stellar model atmospheres by optical interferometry. IV. VINCI interferometry and UVES spectroscopy of Menkar", Astronomy and Astrophysics, 460 (3): 855–864, arXiv:astro-ph/0610150, Bibcode:2006A&A...460..855W, doi:10.1051/0004-6361:20066032, S2CID 16525827

External links

Giant Stars An interactive website comparing the Earth and the Sun to some of the largest known stars
Three largest stars identified BBC News
What is the Biggest Star in the Universe? Universe Today

[methods-10] 1 2 3 4 5 6 Methods for calculating the radius:
AD: radius calculated from angular diameter and distance

L/T_eff: radius calculated from bolometric luminosity and effective temperature

SEIS: radius obtained from seismic data

OD: radius obtained from optical depth

[mwJ5g] AD: radius calculated from angular diameter and distance

[mwJ5k] L/T_eff: radius calculated from bolometric luminosity and effective temperature

[mwJ50] SEIS: radius obtained from seismic data

[mwJ54] OD: radius obtained from optical depth

[J2000-12] 1 2 3 4 5 6 At the J2000 epoch

[L1-55] Luminosities are calculated using the apparent bolometric magnitude and distances in the following equation:
10^{0.4 • (4.74−(m_bol+5−5 • log(dist)))}

[103] Calculated using a distance of 432 parsecs and an angular diameter of 2.31 milliarcseconds.

[203] Legend:
UD=Uniform disk diameter
LD=Limb-darkened diameter
Ross=Rosseland diameter
Est = Estimated using distance and physical radius

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