HD 76151

HD 76151

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Hydra
Right ascension	08^h 54^m 17.9471^s[1]
Declination	−05° 26′ 04.054″[1]
Apparent magnitude (V)	6.00[2]
Characteristics
Evolutionary stage	Main sequence
Spectral type	G2V[3]
U−B color index	+0.22[4]
B−V color index	+0.67[4]
R−I color index	+0.21[4]
Astrometry
Radial velocity (Rv)	31.99±0.12[1] km/s
Proper motion (μ)	RA: −413.648 mas/yr[1] Dec.: 30.619 mas/yr[1]
Parallax (π)	59.3595 ± 0.0408 mas[1]
Distance	54.95 ± 0.04 ly (16.85 ± 0.01 pc)
Absolute magnitude (MV)	4.81[5]
Details[3]
Mass	1.053+0.056 −0.068 M☉
Radius	1.125+0.035 −0.011 R☉
Surface gravity (log g)	4.35±0.18 cgs
Temperature	5,790±170 K
Metallicity [Fe/H]	0.24±0.09 dex
Rotation	15 days[6]
Rotational velocity (v sin i)	3[7] km/s
Age	5.5+2.5 −2.1 Gyr
Other designations
BD−04 2490, GC 12307, GJ 327, HD 76151, HIP 43726, HR 3538, SAO 136389, PPM 191823, LTT 3283, NLTT 20504[2]
Database references
SIMBAD	data

HD 76151 is a high proper motion, G-type main-sequence star and solar analog^[3] in the constellation of Hydra 54.95 light-years from Earth.^[1] It has an apparent visual magnitude of approximately 6.00, which means it is faintly visible to the naked eye under good viewing conditions.^[2] An infrared excess has been detected around this star, most likely indicating the presence of a circumstellar disk at a radius of 7.9 AU. The temperature of this dust is 99 K.^[8]

HD 76151 has an age of roughly 5.5 billion years old, with estimates ranging from 3.4 to 9.6 billion years. The stellar atmosphere has an effective temperature of around 5,790 K (5,520 °C; 9,960 °F). The radius of HD 76151 is 1.125 solar radii (783,000 km) based on spectroscopic observations, though Gaia DR3 estimates a radius of 0.977 solar radii (680,000 km). It is slightly metal-rich and is a member of the thin disk population.^[3]

References

1. 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. "HD 76151". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved January 20, 2011.
3. Senturk, S.; et al. (October 2024). "Near-Infrared Spectroscopy of the Sun and Solar Analog Star HD 76151: Compiling an Extensive Line List in Y-, J-, H-, and K-Bands". The Astrophysical Journal. 976 (2). id. 175. arXiv:2410.08270. Bibcode:2024ApJ...976..175S. doi:10.3847/1538-4357/ad85e4.
4. HR 3538, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line January 20, 2011.
5. 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.
6. Maldonado, J.; et al. (October 2010), "A spectroscopy study of nearby late-type stars, possible members of stellar kinematic groups", Astronomy and Astrophysics, 521: A12, arXiv:1007.1132, Bibcode:2010A&A...521A..12M, doi:10.1051/0004-6361/201014948, S2CID 119209183
7. HD 76151, database entry, The Geneva-Copenhagen Survey of Solar neighbourhood, J. Holmberg et al., 2007, CDS ID V/117A. Accessed on line January 20, 2011.
8. Eiroa, C.; et al. (July 2013). "DUst around NEarby Stars. The survey observational results". Astronomy & Astrophysics. 555: A11. arXiv:1305.0155. Bibcode:2013A&A...555A..11E. doi:10.1051/0004-6361/201321050. S2CID 377244.