HD 92063
Star in the constellation Carina
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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]
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| 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 mas[1] |
| Distance | 246 ± 3 ly (75.5 ± 0.8 pc) |
| Absolute magnitude (MV) | 0.55[2] |
| Details | |
| Mass | 1.2[5] M☉ |
| Radius | 13.85+0.26 −1.17[1] R☉ |
| Luminosity | 72.1±0.9[1] L☉ |
| Surface gravity (log g) | 2.25[5] cgs |
| Temperature | 4,520+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 | |
| SIMBAD | data |
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]