65 Aurigae
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Auriga |
| Right ascension | 07h 22m 02.61744s |
| Declination | +36° 45′ 38.0957″ |
| Apparent magnitude (V) | 5.12 |
| Characteristics | |
| Spectral type | K0 III |
| B−V color index | 1.082±0.005 |
| Astrometry | |
| Radial velocity (Rv) | 21.81±0.16 km/s |
| Proper motion (μ) | RA: −96.915 mas/yr Dec.: −22.436 mas/yr |
| Parallax (π) | 12.9673±0.1294 mas |
| Distance | 252 ± 3 ly (77.1 ± 0.8 pc) |
| Absolute magnitude (MV) | 0.82 |
| Details | |
| 65 Aur A | |
| Mass | 1.34 M☉ |
| Radius | 13.02+0.47 −2.57 R☉ |
| Luminosity | 69.6±0.9 L☉ |
| Surface gravity (log g) | 2.72 cgs |
| Temperature | 4,575±17 K |
| Metallicity [Fe/H] | −0.35±0.04 dex |
| Rotational velocity (v sin i) | 0.0 km/s |
| Age | 3.31 Gyr |
| Other designations | |
| 65 Aur, BD+37°1707, FK5 2568, HD 57264, HIP 35710, HR 2793, SAO 60010 | |
| Database references | |
| SIMBAD | data |
65 Aurigae is a binary star system located 252 light years away from the Sun in the northern constellation of Auriga. It is visible to the naked eye as a faint, orange hued star with an apparent visual magnitude of 5.12. The primary, designated component A, is an aging giant star with a stellar classification of K0 III. It is 3.31 billion years old and has expanded to 13 times the Sun's radius after exhausting the hydrogen at its core. Its companion, component B, is a magnitude 11.7 star located at an angular separation of 11.4″ from the primary, as of 2008. The pair are moving further from the Earth with a heliocentric radial velocity of 22 km/s.
It was also known to be part of a much bigger constellation named Telescopium Herschelii before it was unrecognized by the International Astronomical Union (IAU).
References
- 1 2 3 4 5 6 7 8 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. XHIP record for this object at VizieR.
- 1 2 3 4 5 6 7 8 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- 1 2 3 Cenarro, A. J.; et al. (January 2007), "Medium-resolution Isaac Newton Telescope library of empirical spectra - II. The stellar atmospheric parameters", Monthly Notices of the Royal Astronomical Society, 374 (2): 664–690, arXiv:astro-ph/0611618, Bibcode:2007MNRAS.374..664C, doi:10.1111/j.1365-2966.2006.11196.x, S2CID 119428437.
- 1 2 3 4 Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", The Astronomical Journal, 150 (3): 88, arXiv:1507.01466, Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88, S2CID 118505114.
- ↑ Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209, S2CID 121883397.
- ↑ "65 Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-05-25.
- 1 2 Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
