HD 138573

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.[7] This is a s

HD 138573
HD 138573
Observation data
Epoch J2000      Equinox ICRS
Constellation Serpens
Right ascension 15h 32m 43.653s[1]
Declination +10° 58′ 05.88″[1]
Apparent magnitude (V) 7.22[2]
Characteristics
Evolutionary stage Main sequence[1]
Spectral type G5 IV-V[3]
B−V color index 0.656[4]
Astrometry
Radial velocity (Rv)−35.67±0.12[1] km/s
Proper motion (μ) RA: −5.880 mas/yr[1]
Dec.: 158.609 mas/yr[1]
Parallax (π)33.1373±0.0240 mas[1]
Distance98.43 ± 0.07 ly
(30.18 ± 0.02 pc)
Absolute magnitude (MV)4.82[4]
Details
Mass0.98±0.01[5] M☉
Radius1.038±0.021[1] R☉
Luminosity0.994±0.005[1] L☉
Surface gravity (log g)4.41±0.01[5] cgs
Temperature5,740±3[5] K
Metallicity [Fe/H]−0.024±0.003[5] dex
Rotational velocity (v sin i)1.30[6] km/s
Age6.50+0.29
−0.42[5] Gyr
Other designations
BD+11 2816, HD 138573, HIP 76114, SAO 101603[7]
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.[7] This is a solar twin, with nearly the same characteristics of the Sun.[4] It is more active than the Sun.[8]

Mahdi et al. (2016) named the star the best solar twin candidate out of their dataset of around 2,800 candidates.[4]

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 [9]
HD 138573 15h 32m 43.7s +10° 58′ 06″ 98 G5IV-V 5,740 −0.024 6.5 [7][5][1]

See also

References

  1. ^ a b c d e f g h i 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. ^ a b c d 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. ^ a b c d e f 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. ^ a b c "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.


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