WR 102

WR 102
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sagittarius
Right ascension 17h 45m 47.541s[1]
Declination −26° 10′ 27.78″[1]
Apparent magnitude (V) 14.10[2]
Characteristics
Evolutionary stage Wolf–Rayet star
Spectral type WO2[3]
B−V color index +0.77[4]
Astrometry
Proper motion (μ) RA: +0.672[1] mas/yr
Dec.: −0.059[1] mas/yr
Parallax (π)0.3421 ± 0.0208 mas[1]
Distance9,500 ± 600 ly
(2,900 ± 200 pc)
Absolute magnitude (MV)−1.46[5]
Details
Mass16.1+1.7
−1.4[5] M☉
Radius0.52[5] R☉
Luminosity380,000[5] L☉
Temperature200,000[5] K
Metallicity [Fe/H]0.0[3] dex
Other designations
V3893 Sagittarii, LS 4368, ALS 4368, Sand 4
Database references
SIMBADdata
WR 102's size compared to the sun.

WR 102 is a Wolf–Rayet star in the constellation Sagittarius, an extremely rare star on the WO oxygen sequence. It is a luminous and very hot star, highly evolved and close to exploding as a supernova.

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  2. ^ Cite error: The named reference wc was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference wo was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference smith was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference sander2019 was invoked but never defined (see the help page).