GCIRS 8* (Galactic Centre IRS 8*) is a young massive star in the Galactic Center region, discovered in May 2006. IRS 8 is an infra-red source identified as a bowshock. The star causing the bowshock has been classified as an O5-O6 giant or supergiant several hundred thousand times as luminous as the sun. It is estimated to be 3.5 million years old, although if it is a binary then it would probably be older. The mass is estimated at 38 M.[2]

Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sagittarius
Right ascension  17h 45m 40.14s[1]
Declination −28° 59′ 58.7″[1]
Spectral typeO[1]
Database references


  1. ^ a b c "GCIRS 8". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 26 December 2016.
  2. ^ Geballe, T. R.; Najarro, F.; Rigaut, F.; Roy, J.‐R. (2006). "TheK‐Band Spectrum of the Hot Star in IRS 8: An Outsider in the Galactic Center?". The Astrophysical Journal. 652 (1): 370–375. arXiv:astro-ph/0607550. Bibcode:2006ApJ...652..370G. doi:10.1086/507764. ISSN 0004-637X.

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