HD 259431
Location of HD 259431 (circled) near the bluish IC 447 nebulosity. NGC 2264 is below (west) and the Rosette Nebula on the right (south). Credit: ESO/S. Guisard | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Monoceros |
| Right ascension | 06h 33m 05.19064s |
| Declination | +10° 19′ 19.9826″ |
| Apparent magnitude (V) | 8.62 - 8.91 |
| Characteristics | |
| Spectral type | B6e |
| U−B color index | −0.540 |
| B−V color index | 0.286 |
| Variable type | Orion |
| Astrometry | |
| Radial velocity (Rv) | 19.00 km/s |
| Proper motion (μ) | RA: −2.410 mas/yr Dec.: −2.912 mas/yr |
| Parallax (π) | 1.5304±0.0273 mas |
| Distance | 2,130 ± 40 ly (650 ± 10 pc) |
| Details | |
| Mass | 6.6 M☉ |
| Radius | 6.63 R☉ |
| Luminosity | 1,550 L☉ |
| Temperature | 14,125 K |
| Rotational velocity (v sin i) | 90 km/s |
| Age | 0.32 Myr |
| Other designations | |
| MWC 147, V700 Monocerotis, BD+10°1172, HD 259431, HIP 31235, SAO 95823, TYC 737-610-1 | |
| Database references | |
| SIMBAD | data |
HD 259431 (MWC 147 or V700 Monocerotis) is a young stellar object in the constellation of Monoceros.