HD 34989
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Orion |
| Right ascension | 05h 21m 43.5624s |
| Declination | +08° 25′ 42.799″ |
| Apparent magnitude (V) | 5.80 |
| Characteristics | |
| Spectral type | B1V |
| U−B color index | −0.88 |
| B−V color index | −0.13 |
| Astrometry | |
| Radial velocity (Rv) | 25.30±3.5 km/s |
| Proper motion (μ) | RA: −0.849±0.154 mas/yr Dec.: −1.791±0.100 mas/yr |
| Parallax (π) | 2.5571±0.1556 mas |
| Distance | 1,280 ± 80 ly (390 ± 20 pc) |
| Absolute magnitude (MV) | −2.36 |
| Details | |
| Mass | 12.1±0.1 M☉ |
| Radius | 7.4 R☉ |
| Luminosity | 3,133 L☉ |
| Surface gravity (log g) | 4.194±0.044 cgs |
| Temperature | 24,838±450 K |
| Metallicity [Fe/H] | −0.43 dex |
| Rotation | 9.3 days |
| Rotational velocity (v sin i) | 30±16 km/s |
| Age | 8.0±2.0 Myr |
| Other designations | |
| HIP 25041, HD 34989, PMC 90-93 1242, uvby98 100034989, AG+08°591, PPM 148818, VDB 38, ALS 8286, HR 1763, ROT 774, WH 21, BD+08°933, IRAS 05190+0822, SAO 112667, YZ 8 2140, FK5 2401, JP11 1038, GC 6574, LS VI +08 1, TD1 4461, GCRV 3206, 2MASS J05214355+0825425, TYC 700-1015-1, MCW 299, UBV 5096, GSC 00700-01015, N30 1147, UBV M 10870 | |
| Database references | |
| SIMBAD | data |
HD 34989 is a blue-white star in the main sequence, of apparent magnitude 5.80, in the constellation of Orion. It is 1700 light-years from the Solar System.