HD 92063

HD 92063 is a single[8] star in the southern constellation of Carina. It has the Bayer designation t1 Carinae, while HD 92063 is the star's identifier from the Henry Draper Catalogue. This is a suspected variable star[4] and is visible to the naked eye with an apparent visual magnitude of 5.08.[2] 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.[1] 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.[9]

This article is about t1 Carinae. For t2 Carinae, see HD 92397.
HD 92063

Carina Nebula with HD 92603 near the right edge of the frame
Observation data
Epoch J2000      Equinox J2000
Constellation Carina
Right ascension 10h 36m 20.51819s[1]
Declination −59° 33′ 51.8102″[1]
Apparent magnitude (V) 5.08[2]
Characteristics
Spectral type K1III[3]
B−V color index 1.172±0.005[2]
Variable type suspected[4]
Astrometry
Radial velocity (Rv)−10.15±0.19[1] km/s
Proper motion (μ) RA: −40.984±0.229[1] mas/yr
Dec.: −39.180±0.226[1] mas/yr
Parallax (π)13.2367 ± 0.1354[1] mas
Distance246 ± 3 ly
(75.5 ± 0.8 pc)
Absolute magnitude (MV)0.55[2]
Details
Mass1.2[5] M☉
Radius13.85+0.26
−1.17[1] R☉
Luminosity72.1±0.9[1] L☉
Surface gravity (log g)2.25[5] cgs
Temperature4,520+204
−41[1] K
Metallicity [Fe/H]+0.02[5] dex
Rotational velocity (v sin i)<1.2[6] km/s
Other designations
t1 Car, NSV 4909, CPD−58°2371, GC 14594, HD 92063, HIP 51912, HR 4164, SAO 238242[7]
Database references
SIMBADdata

This is an aging K-type giant star with a stellar classification of K1III,[3] having exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence. At present it has 14[1] times the radius of the Sun. The star is radiating 72[1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,520 K.[1]

References
  1. 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.
  2. 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.
  3. Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, 1, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1975mcts.book.....H.
  4. 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.
  5. 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.
  6. 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.
  7. "HD 92063". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-07-12.
  8. 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.
  9. 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, A49.

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