HD 77370
Star in the constellation Carina
From Wikipedia, the free encyclopedia
HD 77370 is a single[8] star in the constellation Carina. It has the Bayer designation b2 Carinae; HD 77370 is the identifier from the Henry Draper catalogue. This object has a yellow-white hue and is visible to the naked eye with an apparent visual magnitude of 5.17.[2] It is located at a distance of 86 light years from the Sun based on parallax,[1] and is drifting further away with a radial velocity of +13 km/s.[2]
| Observation data Epoch J2000.0 Equinox ICRS | |
|---|---|
| Constellation | Carina |
| Right ascension | 08h 59m 24.18167s[1] |
| Declination | −59° 05′ 01.3624″[1] |
| Apparent magnitude (V) | 5.17[2] |
| Characteristics | |
| Evolutionary stage | main sequence[1] |
| Spectral type | F4V[3] |
| B−V color index | 0.417±0.005[2] |
| Astrometry | |
| Radial velocity (Rv) | +13.27±0.63[2] km/s |
| Proper motion (μ) | RA: −175.405[1] mas/yr Dec.: +282.080[1] mas/yr |
| Parallax (π) | 38.0773±0.0883 mas[1] |
| Distance | 85.7 ± 0.2 ly (26.26 ± 0.06 pc) |
| Absolute magnitude (MV) | 3.06[2] |
| Details | |
| Mass | 1.45[4] M☉ |
| Radius | 1.67+0.05 −0.11[5] R☉ |
| Luminosity | 4.834+0.28 −0.27[5] L☉ |
| Surface gravity (log g) | 4.18[4] cgs |
| Temperature | 6,699±97[4] K |
| Metallicity [Fe/H] | 0.93[4] dex |
| Rotational velocity (v sin i) | 60.4±3.0[6] km/s |
| Age | 1.3±0.3[2] Gyr |
| Other designations | |
| b2 Car, BD−58°1327, FK5 2570, GC 12449, GJ 333.1, GJ 9283, HD 77370, HIP 44143, HR 3598, SAO 236475, CCDM J08594-5905, WDS J08594-5905A[7] | |
| Database references | |
| SIMBAD | data |
This is an ordinary F-type main-sequence star with a stellar classification of F4V.[3] It is around 1.3[2] billion years old and retains a relatively high projected rotational velocity of 60 km/s.[6] The star has 1.45[4] times the mass of the Sun and 1.67 times the Sun's radius.[5] It is radiating 4.8 times the luminosity of the Sun[5] from its photosphere at an effective temperature of 6,699 K.[4] The star is the most likely source of the X-ray emission detected at these coordinates.[9]