Astronomy:28 Aurigae
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Short description: G-type giant star in the constellation Auriga
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[2] mas |
| 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 | |
| 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
- ↑ 1.0 1.1 1.2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 3.3 Oja, T. (1984). "UBV photometry of stars whose positions are accurately known". Astronomy and Astrophysics Supplement Series 57: 357. Bibcode: 1984A&AS...57..357O.
- ↑ 4.0 4.1 4.2 4.3 Khalatyan, A.; Anders, F.; Chiappini, C.; Queiroz, A. B. A.; Nepal, S.; Dal Ponte, M.; Jordi, C.; Guiglion, G. et al. (2024). "Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost". Astronomy and Astrophysics 691: A98. doi:10.1051/0004-6361/202451427. Bibcode: 2024A&A...691A..98K.
- ↑ Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S.
- ↑ Kordopatis, G.; Schultheis, M.; McMillan, P. J.; Palicio, P. A.; De Laverny, P.; Recio-Blanco, A.; Creevey, O.; Álvarez, M. A. et al. (2023). "Stellar ages, masses, extinctions, and orbital parameters based on spectroscopic parameters of Gaia DR3". Astronomy and Astrophysics 669: A104. doi:10.1051/0004-6361/202244283. Bibcode: 2023A&A...669A.104K.
- ↑ 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. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V.
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