Omicron Velorum

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Not to be confused with Omicron Velorum Cluster.
Omicron Velorum
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Vela
Right ascension 08h 40m 17.58553s[1]
Declination –52° 55′ 18.8002″[1]
Apparent magnitude (V) +3.60[2]
Characteristics
Spectral type B3 IV[3]
U−B color index –0.62[2]
B−V color index –0.18[2]
Astrometry
Proper motion (μ) RA: –24.42[1] mas/yr
Dec.: +34.44[1] mas/yr
Parallax (π) 6.61 ± 0.35[1] mas
Distance 490 ± 30 ly
(151 ± 8 pc)
Details
Mass 5.5 ± 0.4[3] M
Radius 4.3 ± 0.7[3] R
Luminosity 1,000[3] L
Surface gravity (log g) 3.91 ± 0.20[3] cgs
Temperature 16,200 ± 700[3] K
Rotational velocity (v sin i) 9 ± 5[3] km/s
Other designations
CP-52 1583, FK5 1227, HD 74195, HIP 42536, HR 3447, SAO 236164.

Omicron Velorum (ο Vel, ο Velorum) is a star in the constellation Vela.

Omicron Velorum is a blue-white B-type subgiant with a mean apparent magnitude of +3.60. It is approximately 495 light years from Earth. A slowly pulsating B star, it ranges between magnitudes 3.57 and 3.63 over 2.8 days.[4]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357 
  2. ^ a b c Johnson, H. L. et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory 4 (99), Bibcode:1966CoLPL...4...99J 
  3. ^ a b c d e f g Hubrig, S. et al. (January 2009), "New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars", Astronomische Nachrichten 330 (4): 317, arXiv:0902.1314, Bibcode:2009AN....330..317H, doi:10.1002/asna.200811187 
  4. ^ "Omicron Velorum". International Variable Star Index. American Association of Variable Star Observers. 10 February 2012. Retrieved 11 October 2013.