HD 43317
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Orion |
| Right ascension | 06h 15m 47.013s |
| Declination | +04° 17′ 01.10″ |
| Apparent magnitude (V) | 6.63 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | B3.5 V or B3 IV |
| U−B color index | −0.646 |
| B−V color index | −0.164±0.010 |
| Variable type | SPB/β Cep hybrid |
| Astrometry | |
| Radial velocity (Rv) | 13.0±4.4 km/s |
| Proper motion (μ) | RA: −4.231 mas/yr Dec.: −3.765 mas/yr |
| Parallax (π) | 3.0975±0.0517 mas |
| Distance | 1,050 ± 20 ly (323 ± 5 pc) |
| Absolute magnitude (MV) | −1.13 |
| Details | |
| Mass | 5.8+0.1 −0.2 M☉ |
| Radius | 3.39 R☉ |
| Luminosity | 737.5 L☉ |
| Surface gravity (log g) | 4.0±0.1 cgs |
| Temperature | 17,350±750 K |
| Rotation | 0.897673(4) d |
| Rotational velocity (v sin i) | 115±9 km/s |
| Age | 28.4 Myr |
| Other designations | |
| CoRoT 3412, BD+04° 1181, FK5 2478, HD 43317, HIP 29739, HR 2232, SAO 113653, PPM 150182 | |
| Database references | |
| SIMBAD | data |
HD 43317 is a variable star in the equatorial constellation of Orion, the hunter. It has an apparent visual magnitude of 6.63, which is faint enough to be a challenge to view with the naked eye under good conditions. Based on parallax measurements, it is located at a distance of approximately 1,050 light years from the Sun. It is drifting further away with a heliocentric radial velocity of about 13 km/s. This star is a member of an open cluster designated OCSN 63.