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.[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]
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Hydra |
| Right ascension | 08h 54m 17.9471s[1] |
| Declination | −05° 26′ 04.054″[1] |
| Apparent magnitude (V) | 6.00[2] |
| Characteristics | |
| 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 | |
| Database references | |
| SIMBAD | data |
HD 76151 has an estimated age of about 5.5 billion years old, with estimates ranging from 3.4 to 9.6 billion years. The star has a 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).[3]
References
edit- ^ a b c d e f 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.
- ^ a b c "HD 76151". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved January 20, 2011.
- ^ a b c d Senturk, S.; Sahin, T.; 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. arXiv:2410.08270.
- ^ a b c 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.
- ^ 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.
- ^ 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
- ^ 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.
- ^ 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.