WR 111
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 18h 08m 28.46870s |
| Declination | −21° 15′ 11.1844″ |
| Apparent magnitude (V) | +7.82 |
| Characteristics | |
| Evolutionary stage | Wolf-Rayet |
| Spectral type | WC5 |
| U−B color index | −0.38 |
| B−V color index | −0.28 |
| Astrometry | |
| Proper motion (μ) | RA: 0.293±0.129 mas/yr Dec.: −1.527±0.107 mas/yr |
| Parallax (π) | 0.5826±0.0759 mas |
| Distance | 1,630+320 −230 pc |
| Absolute magnitude (MV) | −4.26 |
| Details | |
| Semi-empirical model | |
| Mass | 13.0 M☉ |
| Radius | 1.99 R☉ |
| Luminosity | 245,000 L☉ |
| Temperature | 89,000 K |
| Hydrodynamical model | |
| Mass | 13.63 M☉ |
| Radius | 0.905 R☉ |
| Luminosity | 282,000 L☉ |
| Temperature | 140,000 K |
| Age | 4.2 Myr |
| Other designations | |
| WR 111, HD 165763, HIP 88856, BD−21°4864, Hen 3-1599, 2MASS J18082846-2115113 | |
| Database references | |
| SIMBAD | data |
WR 111 (HD 165763) is a Wolf-Rayet (WR) star in the constellation Sagittarius. It is magnitude 7.8 and lies about 5,150 light-years away. It is one of the brightest and most closely studied WR stars.