2 Scorpii
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Scorpius |
| 2 Scorpii A | |
| Right ascension | 15h 53m 36.73s |
| Declination | −25° 19′ 37.5″ |
| Apparent magnitude (V) | 4.59 |
| 2 Scorpii B | |
| Right ascension | |
| Declination | |
| Apparent magnitude (V) | 6.98 |
| Characteristics | |
| Spectral type | B2.5Vn/? |
| U−B color index | -0.66 |
| B−V color index | -0.07 |
| Astrometry | |
| Radial velocity (Rv) | -9.3 ± 1.6 km/s |
| Proper motion (μ) | RA: -14.4 ± 0.8 mas/yr Dec.: -23.5 ± 0.8 mas/yr |
| Parallax (π) | 6.49 ± 0.51 mas |
| Distance | 433.2 ly (132.8 pc) |
| Absolute magnitude (MV) | -1.39 |
| Details | |
| Mass | 8.9 M☉ |
| Radius | 3.3 R☉ |
| Luminosity | 296 L☉ |
| Temperature | 20000 K |
| Age | 25 Myr |
| Other designations | |
2 Scorpii (A Scorpii) is a double star system in the constellation Scorpius. 2 Scorpii A and 2 Scorpii B are separated by 2.13 arcseconds.
References
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