HD 165516
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 18h 07m 11.35s |
| Declination | −21° 26′ 38.2″ |
| Apparent magnitude (V) | +6.22 |
| Characteristics | |
| Spectral type | B1 + B2Ib |
| U−B color index | -0.76 |
| B−V color index | 0.58 |
| Astrometry | |
| Radial velocity (Rv) | -8.50 km/s |
| Proper motion (μ) | RA: --0.23 mas/yr Dec.: --1.15 mas/yr |
| Parallax (π) | 1.39 ± 0.49 mas |
| Distance | approx. 2,300 ly (approx. 700 pc) |
| Absolute magnitude (MV) | -5.8[1] |
| Details | |
| Mass | 10.1[2] M☉ |
| Radius | 26[3] R☉ |
| Temperature | 25,000[4] K |
| Age | 22.5[2] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 165516 is a binary star in the constellation Sagittarius. Both components are blue supergiants. It is part of the Sagittarius OB1 association.
References
- ↑ Humphreys, R. M. (1978). "Studies of luminous stars in nearby galaxies. I. Supergiants and O stars in the Milky Way". The Astrophysical Journal Supplement Series 38: 309. doi:10.1086/190559.
- ↑ 2.0 2.1 Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society 410: 190. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x.
- ↑ Bibcode: 1972A&AS....7..257W
- ↑ Bibcode: 1989A&AS...80...73G
See also
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