HD 165516

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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
Spectral type B1 + B2Ib
U−B color index -0.76
B−V color index 0.58
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]
Mass 10.1[2] M
Radius 26[3] R
Temperature 25,000[4] K
Age 22.5[2] Myr
Other designations
HR 6762, HD 165516, HIP 88760
Database references

HD 165516 is a binary star in the constellation Sagittarius. Both components are blue supergiants. It is part of the Sagittarius OB1 association.


  1. ^ 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. ^ a b 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. 
  3. ^ Bibcode1989A&AS...80...73G

See also[edit]