HR 3159
Star in the constellation Carina
From Wikipedia, the free encyclopedia
HR 3159 is a single[10] star in the southern constellation of Carina, positioned near the southern constellation border with Volans. It has the Bayer designation D Carinae; HR 3159 is the Bright Star Catalogue designation. This object has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of +4.81.[1] It is located at a distance of approximately 466 light years from the Sun based on parallax, and is drifting further away with a radial velocity of 22 km/s.
 | |
| Observation data Epoch J2000.00 Equinox ICRS | |
|---|---|
| Constellation | Carina[1] |
| Right ascension | 08h 00m 19.96579s[2] |
| Declination | −63° 34′ 02.8274″[2] |
| Apparent magnitude (V) | 4.81[1] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | B4V[3] |
| B−V color index | −0.173±0.007[1] |
| Astrometry | |
| Radial velocity (Rv) | +22.1±2.8[1] km/s |
| Proper motion (μ) | RA: −1.762[2] mas/yr Dec.: +19.905[2] mas/yr |
| Parallax (π) | 6.9936±0.0826 mas[2] |
| Distance | 466 ± 6 ly (143 ± 2 pc) |
| Absolute magnitude (MV) | −1.11[1] |
| Details | |
| Mass | 6.3±0.1[4] M☉ |
| Radius | 3.77±0.27[5] R☉ |
| Luminosity | 912[6] L☉ |
| Surface gravity (log g) | 4.03±0.05[5] cgs |
| Temperature | 16,983[6] K |
| Metallicity [Fe/H] | −0.09±0.06[7] dex |
| Rotational velocity (v sin i) | 43[6] km/s |
| Age | 17.2±1.3[4] or 176[8] Myr |
| Other designations | |
| D Car, CPD−63°866, FK5 2624, GC 10893, HD 66591, HIP 39138, HR 3159, SAO 250069[9] | |
| Database references | |
| SIMBAD | data |
This object is a B-type main-sequence star with a stellar classification of B4V,[3] which indicates it is undergoing core hydrogen fusion. The star has a radius of nearly four times the radius of the Sun,[5] and over six[4] times the Sun's mass. Age estimates range from 17[4] up to 176[8] million years old, and it is spinning with a projected rotational velocity of 43 km/s.[6] It is radiating 912[6] times the luminosity of the Sun from its photosphere at an effective temperature of 16,983 K.[6]