WR 93b

WR 93b
Location of WR 93b (circled in red). Scorpius runs across the top of the image from Antares at top left to the end of the tail on the right.
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Scorpius
Right ascension 17h 32m 03.308s[1]
Declination −35° 04′ 32.62″[1]
Apparent magnitude (V) 15.2[2]
Characteristics
Evolutionary stage Wolf-Rayet star
Spectral type WO3[3]
Apparent magnitude (B) 16.9[4]
Apparent magnitude (R) 14.4[4]
Apparent magnitude (J) 11.331[4]
Apparent magnitude (K) 10.17[5]
Astrometry
Proper motion (μ) RA: −0.642±0.032[1] mas/yr
Dec.: −2.1055±0.024[1] mas/yr
Parallax (π)0.4298 ± 0.0288 mas[1]
Distance7,600 ± 500 ly
(2,300 ± 200 pc)
Details
Mass8.1+1.9
−1.2[6] M☉
Radius0.44[6] R☉
Luminosity110,000+53,000
−30,000[6] L☉
Temperature160,000[3] K
Other designations
2MASS J17320330-3504323, SSTGLMC G353.2744-00.8460
Database references
SIMBADdata

WR 93b is a Wolf-Rayet star in the constellation Scorpius, an extremely rare star on the WO oxygen sequence. It appears near NGC 6357 in the tail of the scorpion.

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  2. ^ Cite error: The named reference apass 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. ^ a b c Cite error: The named reference 2mass was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference annex was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference wc was invoked but never defined (see the help page).