HD 32820

HD 32820
Observation data
Epoch J2000.0      Equinox ICRS
Constellation Caelum
Right ascension 05h 03m 53.95236s
Declination −41° 44′ 41.8259″
Apparent magnitude (V) 6.30±0.01
Characteristics
Evolutionary stage main sequence
Spectral type F8 V
U−B color index +0.04
B−V color index +0.53
Astrometry
Radial velocity (Rv)29.8±0.9 km/s
Proper motion (μ) RA: +22.005 mas/yr
Dec.: +158.650 mas/yr
Parallax (π)31.6204±0.0176 mas
Distance103.15 ± 0.06 ly
(31.63 ± 0.02 pc)
Absolute magnitude (MV)+3.79
Details
Mass1.25 M☉
Radius1.33±0.03 R☉
Luminosity2.44±0.01 L☉
Surface gravity (log g)4.25 cgs
Temperature6,227±68 K
Metallicity [Fe/H]−0.04 dex
Rotational velocity (v sin i)8 km/s
Age3.46 Gyr
Other designations
27 G. Caeli, CD−41°1690, CPD−41°621, GC 6204, HD 32820, HIP 23555, HR 1651, SAO 217153
Database references
SIMBADdata

HD 32820, also known as HR 1651, is a yellowish-white hued star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 6.3, placing it near the limit of naked eye visibility. The object is located relatively close at a distance of 103 light years based on parallax measurements from Gaia DR3, but is receding with a heliocentric radial velocity of 29.8 km/s.

HD 32820 has a stellar classification of F8 V, indicating that it is an ordinary F-type main-sequence star that is generating energy via hydrogen fusion at its core. It has 125% the mass of the Sun and 133% of its radius. It radiates double the luminosity of the Sun from its photosphere at an effective temperature of 6,227 K. HD 32820 is said to be 3.46 billion years old, slightly younger than the Sun, and has a near solar iron abundance. The star spins modestly with a projected rotational velocity of 8 km/s and is chromospherically inactive

References

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  2. 1 2 3 4 5 6 7 8 9 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.
  3. 1 2 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
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  9. 1 2 3 4 Masana, E.; Jordi, C.; Ribas, I. (10 April 2006). "Effective temperature scale and bolometric corrections from 2MASS photometry". Astronomy & Astrophysics. 450 (2): 735–746. arXiv:astro-ph/0601049. Bibcode:2006A&A...450..735M. doi:10.1051/0004-6361:20054021. eISSN 1432-0746. ISSN 0004-6361.
  10. ↑ Allende Prieto, C.; Lambert, D. L. (December 1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A. ISSN 0004-6361.
  11. 1 2 3 4 Ibukiyama, A.; Arimoto, N. (21 October 2002). "HIPPARCOS age-metallicity relation of the solar neighbourhood disc stars". Astronomy & Astrophysics. 394 (3): 927–941. arXiv:astro-ph/0207108. Bibcode:2002A&A...394..927I. doi:10.1051/0004-6361:20021157. eISSN 1432-0746. ISSN 0004-6361.
  12. 1 2 Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S.; Mowlavi, N. (16 April 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood". Astronomy & Astrophysics. 418 (3): 989–1019. arXiv:astro-ph/0405198. Bibcode:2004A&A...418..989N. doi:10.1051/0004-6361:20035959. eISSN 1432-0746. ISSN 0004-6361.
  13. ↑ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
  14. ↑ "HD 28454". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 6, 2022.
  15. ↑ Pace, G. (22 February 2013). "Chromospheric activity as age indicator". Astronomy & Astrophysics. 551: L8. arXiv:1301.5651. Bibcode:2013A&A...551L...8P. doi:10.1051/0004-6361/201220364. eISSN 1432-0746. ISSN 0004-6361.