28 Aurigae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga[1] |
| Right ascension | 05h 48m 51.819s[2] |
| Declination | +39° 32′ 01.02″[2] |
| Apparent magnitude (V) | 6.8[3] |
| Characteristics | |
| Spectral type | G1 III-IV[1] |
| Apparent magnitude (G) | 6.59[2] |
| U−B color index | +0.41[3] |
| B−V color index | +0.81[3] |
| Astrometry | |
| Radial velocity (Rv) | 15.15±1.00[2] km/s |
| Proper motion (μ) | RA: 0.189±0.035[2] mas/yr Dec.: −26.013±0.022[2] mas/yr |
| Parallax (π) | 5.2120±0.0306 mas[2] |
| Distance | 626 ± 4 ly (192 ± 1 pc) |
| Absolute magnitude (MV) | +0.32[1] |
| Details | |
| Mass | 1.6[4] M☉ |
| Radius | 10.3[5] R☉ |
| Luminosity | 74[2] L☉ |
| Surface gravity (log g) | 3.45[4] cgs |
| Temperature | 5,443[4] K |
| Metallicity [Fe/H] | −0.16[4] dex |
| Age | 500[6] Myr |
| Other designations | |
| BD+39°1416, HD 38604, HIP 27458, SAO 58460, Gaia DR3 191509366212532352 | |
| Database references | |
| SIMBAD | data |
28 Aurigae (28 Aur) is a star in the constellation Auriga. Its apparent magnitude is 6.80.[3] It is a giant star which has exhausted its core hydrogen and expanded to ten times the size of the Sun. Despite being slightly cooler than the sun at 5,443 K it is 74 times more luminous. It is located about 626 ly away.
28 Aurigae is one of the few faint Flamsteed stars which is not in the Bright Star Catalogue.[7] It is included in the Hipparcos catalogue and its parallax was calculated to be 4.99±0.57 mas.[8] Its Gaia Data Release 3 parallax is larger and more precise at 5.2120±0.0306[2]
References
- ^ a b c 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.
- ^ 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.
- ^ a b c d Oja, T. (1984). "UBV photometry of stars whose positions are accurately known". Astronomy and Astrophysics Supplement Series. 57: 357. Bibcode:1984A&AS...57..357O.
- ^ a b c d Khalatyan, A.; Anders, F.; Chiappini, C.; Queiroz, A. B. A.; Nepal, S.; Dal Ponte, M.; Jordi, C.; Guiglion, G.; Valentini, M.; Torralba Elipe, G.; Steinmetz, M.; Pantaleoni-González, M.; Malhotra, S.; Jiménez-Arranz, Ó.; Enke, H.; Casamiquela, L.; Ardèvol, J. (2024). "Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost". Astronomy and Astrophysics. 691: A98. arXiv:2407.06963. Bibcode:2024A&A...691A..98K. doi:10.1051/0004-6361/202451427.
- ^ Stassun, Keivan G.; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467.
- ^ Kordopatis, G.; Schultheis, M.; McMillan, P. J.; Palicio, P. A.; De Laverny, P.; Recio-Blanco, A.; Creevey, O.; Álvarez, M. A.; Andrae, R.; Poggio, E.; Spitoni, E.; Contursi, G.; Zhao, H.; Oreshina-Slezak, I.; Ordenovic, C.; Bijaoui, A. (2023). "Stellar ages, masses, extinctions, and orbital parameters based on spectroscopic parameters of Gaia DR3". Astronomy and Astrophysics. 669: A104. arXiv:2206.07937. Bibcode:2023A&A...669A.104K. doi:10.1051/0004-6361/202244283.
- ^ Bidelman, W. P. (1990). "Flamsteed stars not contained in the Yale "Catalogue of Bright Stars"". Bulletin d'Information du Centre de Données Stellaires. 38: 13. Bibcode:1990BICDS..38...13B.
- ^ Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.