WR 25
WR 25 (HD 93162) is a binary star system in the turbulent star-forming region the Carina Nebula, about 6,800 light-years from Earth. It contains a Wolf-Rayet star and a hot luminous companion and is a member of the Trumpler 16 cluster. The name comes from the Catalogue of Galactic Wolf–Rayet Stars.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina |
| Right ascension | 10h 44m 10.337s |
| Declination | −59° 43′ 11.41″ |
| Apparent magnitude (V) | 8.80 |
| Characteristics | |
| Evolutionary stage | Wolf-Rayet star |
| Spectral type | O2.5If*/WN6 + OB |
| Astrometry | |
| Radial velocity (Rv) | −34.6 km/s |
| Proper motion (μ) | RA: -6.918 mas/yr Dec.: 2.764 mas/yr |
| Parallax (π) | 0.4450 ± 0.0203 mas |
| Distance | 1,970+180 −150 pc |
| Absolute magnitude (MV) | –6.98 |
| Orbit | |
| Period (P) | 207.85 days |
| Semi-major axis (a) | 156 R☉ |
| Eccentricity (e) | 0.50 |
| Semi-amplitude (K1) (primary) | 44 km/s |
| Details | |
| WR | |
| Mass | 98 M☉ |
| Radius | 20.24 R☉ |
| Luminosity (bolometric) | 2,400,000 L☉ |
| Temperature | 50,100 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
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