15 Sagittarii

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15 Sagittarii
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sagittarius
Right ascension 18h 15m 12.90641s[1]
Declination −20° 43′ 41.7738″[1]
Apparent magnitude (V) 5.37[2]
Spectral type O9.7 Iab[3]
Other designations
15 Sgr, BD−20° 5054, HD 167264, HIP 89439, HR 6822, SAO 186543
Database references

15 Sagittarii (15 Sgr) is a multiple star in Sagittarius. The primary is an O9.7 supergiant.


  1. ^ a b Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357. 
  2. ^ Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D. 
  3. ^ Sota, A.; Maíz Apellániz, J.; Morrell, N. I.; Barbá, R. H.; Walborn, N. R.; Gamen, R. C.; Arias, J. I.; Alfaro, E. J. (2014). "The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars". The Astrophysical Journal Supplement. 211: 10. Bibcode:2014ApJS..211...10S. arXiv:1312.6222Freely accessible. doi:10.1088/0067-0049/211/1/10.