HD 138573

HD 138573
Observation data
Epoch J2000      Equinox ICRS
Constellation Serpens
Right ascension 15h 32m 43.653s
Declination +10° 58′ 05.88″
Apparent magnitude (V) 7.22
Characteristics
Evolutionary stage Main sequence
Spectral type G5 IV-V
B−V color index 0.656
Astrometry
Radial velocity (Rv)−35.67±0.12 km/s
Proper motion (μ) RA: −5.880 mas/yr
Dec.: 158.609 mas/yr
Parallax (π)33.1373±0.0240 mas
Distance98.43 ± 0.07 ly
(30.18 ± 0.02 pc)
Absolute magnitude (MV)4.82
Details
Mass0.98±0.01 M☉
Radius1.038±0.021 R☉
Luminosity0.994±0.005 L☉
Surface gravity (log g)4.41±0.01 cgs
Temperature5,740±3 K
Metallicity [Fe/H]−0.024±0.003 dex
Rotational velocity (v sin i)1.30 km/s
Age6.50+0.29
−0.42 Gyr
Other designations
BD+11 2816, HD 138573, HIP 76114, SAO 101603
Database references
SIMBADdata

HD 138573 is a G-type main-sequence star in the constellation Serpens, class G5IV-V, roughly 98.4 light-years (30.2 parsecs) from Earth. This is a solar twin, with nearly the same characteristics of the Sun. It is more active than the Sun.

Mahdi et al. (2016) named the star the best solar twin candidate out of their dataset of around 2,800 candidates.

Sun comparison

Chart compares the Sun to HD 138573.

Identifier J2000 Coordinates Distance
(ly)		 Stellar
Class		 Temperature
(K)		 Metallicity
(dex)		 Age
(Gyr)		 Notes
Right ascension Declination
Sun — — 0.00 G2V 5,778 +0.00 4.6
HD 138573 15h 32m 43.7s +10° 58′ 06″ 98 G5IV-V 5,740 −0.024 6.5

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 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.
  2. ↑ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
  3. ↑ Harlan, E. A. (September 1969). "MK classifications for F- and G-type stars. I". Astronomical Journal. 74: 916. Bibcode:1969AJ.....74..916H. doi:10.1086/110881.
  4. 1 2 3 4 Mahdi, D.; Soubiran, C.; Blanco-Cuaresma, S.; Chemin, L. (March 2016). "Solar twins in the ELODIE archive". Astronomy & Astrophysics. 587: A131. arXiv:1601.01599. Bibcode:2016A&A...587A.131M. doi:10.1051/0004-6361/201527472. S2CID 119205608.
  5. 1 2 3 4 5 6 Martos, Giulia; Meléndez, Jorge; Rathsam, Anne; Carvalho-Silva, Gabriela (2023-04-21). "Metallicity and age effects on lithium depletion in solar analogues". Monthly Notices of the Royal Astronomical Society. 522 (3): 3217–3226. arXiv:2305.01861. Bibcode:2023MNRAS.522.3217M. doi:10.1093/mnras/stad1177. ISSN 0035-8711.
  6. ↑ Llorente de Andrés, F.; et al. (October 2021). "The evolution of lithium in FGK dwarf stars. The lithium-rotation connection and the Li desert". Astronomy and Astrophysics. 654: A137. arXiv:2108.05852. Bibcode:2021A&A...654A.137L. doi:10.1051/0004-6361/202141339. ISSN 0004-6361.
  7. 1 2 3 "HD 138573". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-06-23.
  8. ↑ Porto de Mello, G. F.; da Silva, R.; da Silva, L.; de Nader, R. V. (March 2014). "A photometric and spectroscopic survey of solar twin stars within 50 parsecs of the Sun. I. Atmospheric parameters and color similarity to the Sun". Astronomy & Astrophysics. 563. id. A52. arXiv:1312.7571. Bibcode:2014A&A...563A..52P. doi:10.1051/0004-6361/201322277.
  9. ↑ Williams, D.R. (2004). "Sun Fact Sheet". NASA. Retrieved 2009-06-23.