.jpg) Carina Nebula with HD 92603 near the right edge of the frame | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Carina |
| Right ascension | 10 36 20.51819 |
| Declination | −59° 33′ 51.8102″ |
| Apparent magnitude (V) | 5.08 |
| Characteristics | |
| Spectral type | K1III |
| B−V color index | 1.172±0.005 |
| Variable type | suspected |
| Astrometry | |
| Radial velocity (Rv) | −10.15±0.19 km/s |
| Proper motion (μ) | RA: −40.984±0.229 mas/yr Dec.: −39.180±0.226 mas/yr |
| Parallax (π) | 13.2367 ± 0.1354 mas |
| Distance | 246 ± 3 ly (75.5 ± 0.8 pc) |
| Absolute magnitude (MV) | 0.55 |
| Details | |
| Mass | 1.2 M☉ |
| Radius | 13.85+0.26 −1.17 R☉ |
| Luminosity | 72.1±0.9 L☉ |
| Surface gravity (log g) | 2.25 cgs |
| Temperature | 4,520+204 −41 K |
| Metallicity | +0.02 dex |
| Rotational velocity (v sin i) | <1.2 km/s |
| Other designations | |
| t Car, NSV 4909, CPD−58°2371, GC 14594, HD 92063, HIP 51912, HR 4164, SAO 238242 | |
| Database references | |
| SIMBAD | data |
HD 92063 is a single star in the southern constellation of Carina. It has the Bayer designation t Carinae, while HD 92063 is the star's identifier from the Henry Draper Catalogue. This is a suspected variable star and is visible to the naked eye with an apparent visual magnitude of 5.08. The star is located at a distance of approximately 246 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −10 km/s. Although it appears at the edge of the Carina Nebula, it is much closer than the nebula. It is also not considered a member of the nearby Alessi 5 open cluster of stars.
This is an aging K-type giant star with a stellar classification of K1III, having exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence. At present it has 14 times the radius of the Sun. The star is radiating 72 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,520 K.
References
- ^ 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.
- ^ 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.
- ^ Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 1, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1975mcts.book.....H.
- ^ Samus', N. N; Kazarovets, E. V; Durlevich, O. V; Kireeva, N. N; Pastukhova, E. N (2017), "General catalogue of variable stars: Version GCVS 5.1", Astronomy Reports, 61 (1): 80, Bibcode:2017ARep...61...80S, doi:10.1134/S1063772917010085, S2CID 125853869.
- ^ Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevič, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; De Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H. (2019), "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18", Astronomy and Astrophysics, 628: A94, arXiv:1904.11302, Bibcode:2019A&A...628A..94A, doi:10.1051/0004-6361/201935765, S2CID 131780028.
- De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014), "A catalog of rotational and radial velocities for evolved stars", Astronomy & Astrophysics, 561: A126, arXiv:1312.3474, Bibcode:2014A&A...561A.126D, doi:10.1051/0004-6361/201220762, S2CID 54046583.
- "HD 92063". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-07-12.
- Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
- Cantat-Gaudin, T.; et al. (July 2018), "Characterising open clusters in the solar neighbourhood with the Tycho-Gaia Astrometric Solution", Astronomy & Astrophysics, 615: 15, arXiv:1801.10042, Bibcode:2018A&A...615A..49C, doi:10.1051/0004-6361/201731251, S2CID 56324345, A49.
External links
- Ford, Dominic. "The star T¹-Car - In-The-Sky.org". in-the-sky.org. Retrieved 2018-05-16.
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