V901 Orionis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Orion |
| Right ascension | 23h 57m 58.477s |
| Declination | +15° 57′ 10.09″ |
| Apparent magnitude (V) | 6.99 (6.97 to 7.02) |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | B2V |
| B−V color index | −0.139±0.007 |
| Variable type | SX Ari |
| Astrometry | |
| Radial velocity (Rv) | 14.66±0.25 km/s |
| Proper motion (μ) | RA: 2.743 mas/yr Dec.: 1.671 mas/yr |
| Parallax (π) | 2.5463±0.0524 mas |
| Distance | 1,280 ± 30 ly (393 ± 8 pc) |
| Absolute magnitude (MV) | −0.77 |
| Details | |
| Mass | 8.3±0.3 M☉ |
| Radius | 3.2 R☉ |
| Luminosity | 1,995+823 −583 L☉ |
| Surface gravity (log g) | 4.04±0.01 cgs |
| Temperature | 22,000±1,000 K |
| Rotation | 1.539 days |
| Rotational velocity (v sin i) | 101 km/s |
| Age | 3.98 Myr |
| Other designations | |
| Landstreet's star, V901 Ori, BD−01°1005, HD 37776, HIP 26742, SAO 132446, PPM 175998 | |
| Database references | |
| SIMBAD | data |
V901 Orionis is a variable star in the equatorial constellation of Orion. It is sometimes known as Landstreet's Star and has the designation HD 37776 from the Henry Draper Catalogue; V901 Ori is the variable star designation. With an apparent visual magnitude that varies around 6.99, it is a challenge to view with the naked eye. Based on parallax measurements from Earth, it is located at a distance of 1,280 ± 30 light-years (393 ± 8 pc). The star is drifting further away from the Sun with a radial velocity of 15 km/s.