HD 316285

HDE 316285

A mid-infrared view of the shell around HD 316285
Credit: NASA Spitzer Space Telescope
Observation data
Epoch J2000      Equinox J2000
Constellation Sagittarius
Right ascension 17h 48m 14.03721s[1]
Declination −28° 00′ 53.1212″[1]
Apparent magnitude (V) 9.60[2]
Characteristics
Spectral type B0Ieq[3]
U−B color index +0.61[2]
B−V color index +1.67[2]
Variable type cLBV[4]
Astrometry
Proper motion (μ) RA: −2.155[1] mas/yr
Dec.: −4.556[1] mas/yr
Parallax (π)0.3010 ± 0.0294 mas[1]
Distance1,900[4] pc
Absolute magnitude (MV)−8.4[5]
Details
Mass18.6[6] M☉
Radius75[5] R☉
Luminosity275,000[7] L☉
Surface gravity (log g)0.74[6] cgs
Temperature15,000[7] K
Metallicity [Fe/H]−0.49[6] dex
Other designations
V4375 Sagittarii, HD 316285, HIP 87136, CD −27°11944, SAO 185776, GCRV 67373, MWC 272, AAVSO 1741-27B
Database references
SIMBADdata

HDE 316285 is a blue supergiant star in the constellation Sagittarius. It is a candidate luminous blue variable and lies about 6,000 light years away in the direction of the Galactic Center.

  1. ^ a b c d e Cite error: The named reference edr3 was invoked but never defined (see the help page).
  2. ^ a b c 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: 0. Bibcode:2002yCat.2237....0D.
  3. ^ Lopes, D. F.; Damineli Neto, A.; De Freitas Pacheco, J. A. (1992). "A spectroscopic study of luminous peculiar B-type stars". Astronomy and Astrophysics. 261: 482. Bibcode:1992A&A...261..482L.
  4. ^ a b Nazé, Y.; Rauw, G.; Hutsemékers, D. (2012). "The first X-ray survey of Galactic luminous blue variables". Astronomy & Astrophysics. 538: A47. arXiv:1111.6375. Bibcode:2012A&A...538A..47N. doi:10.1051/0004-6361/201118040. S2CID 43688343.
  5. ^ a b Cite error: The named reference hillier was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference starhorse2 was invoked but never defined (see the help page).
  7. ^ a b van Genderen, A. M. (2001). "S Doradus variables in the Galaxy and the Magellanic Clouds". Astronomy & Astrophysics. 366 (2): 508–31. Bibcode:2001A&A...366..508V. doi:10.1051/0004-6361:20000022.