HD 83058
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Vela |
| Right ascension | 09h 34m 08.793s |
| Declination | −51° 15′ 18.95″ |
| Apparent magnitude (V) | 5.00 |
| Characteristics | |
| Evolutionary stage | subgiant |
| Spectral type | B2 IV |
| U−B color index | −0.97 |
| B−V color index | −0.19 |
| Astrometry | |
| Radial velocity (Rv) | +16.5±3.0 km/s |
| Proper motion (μ) | RA: −130.55 mas/yr Dec.: +42.98 mas/yr |
| Parallax (π) | 3.4252±0.1907 mas |
| Distance | 950 ± 50 ly (290 ± 20 pc) |
| Absolute magnitude (MV) | −2.84 |
| Details | |
| primary | |
| Mass | 9.3 M☉ |
| Radius | 5.405 R☉ |
| Luminosity | 2,686 L☉ |
| Surface gravity (log g) | 3.779 cgs |
| Temperature | 17,887 K |
| Rotational velocity (v sin i) | 64±2 km/s |
| Age | 14.1 Myr |
| secondary | |
| Rotational velocity (v sin i) | 24±2 km/s |
| Other designations | |
| L Vel, CD−50°4270, FK5 2764, HD 83058, HIP 46950, HR 3819, SAO 237107 | |
| Database references | |
| SIMBAD | data |
HD 83058 is a subgiant star in the constellation Vela and a spectroscopic binary. It is visible to the naked eye with an apparent visual magnitude of 5.0. Based upon an annual parallax shift of 3.4254 mas, it is located 950 light-years from the Sun. The system is moving further away with a heliocentric radial velocity of +35 km/s.
HD 83058 has generally been considered to be a single star, but high-resolution spectra show it to be a double-lined spectroscopic binary. The two components have approximately the same spectral type. Line-profile variations have been detected which suggest that at least one component pulsates, as is common for stars of this spectral class.
HD 83058 was proposed as a runaway star from a supernova explosion. However, the discovery that it is a binary makes this unlikely.