V Cephei

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V Cephei
Observation data
Epoch J2000      Equinox J2000
Constellation Cepheus
Right ascension 23h 56m 27.80s[1]
Declination +83° 11′ 28.02″[1]
Apparent magnitude (V) 6.5947[2]
Characteristics
Spectral type A3V[2]
B−V color index 0.064[2]
Astrometry
Radial velocity (Rv) −12.9 ± 2[1] km/s
Proper motion (μ) RA: 49.22[2] mas/yr
Dec.: 6.48[2] mas/yr
Other designations

V Cephei is a white main sequence star in the constellation Cepheus. It only varies slightly by 0.03 of a magnitude. It was suspected of being variable by American astronomer Seth Carlo Chandler noting in 1890 that it varied by 0.7 magnitude but that it needed more confirmation. Subsequent observers were divided in whether they noted variability or not.[3] A subsequent study with photoelectric photometry showed no variability.[4]

See also[edit]

References[edit]

  1. ^ a b c d e "SIMBAD basic query result: V Cephei". SIMBAD, Centre de Données astronomiques de Strasbourg. Retrieved August 17, 2010. 
  2. ^ a b c d e "Hipparcos catalogue: query form". CASU Astronomical Data Centre. Cambridge Astronomical Survey Unit. 2006. Retrieved August 17, 2010. 
  3. ^ Hoffleit, Dorrit (1985). "Was Harlow Shapley Right About V Cephei?". The Journal of the American Association of Variable Star Observers 14 (2): 64–66. Bibcode:1985JAVSO..14...64H. 
  4. ^ Fortier, George (1989). "Photoelectric Photometry of V Cephei". The Journal of the American Association of Variable Star Observers 18 (1): 49–51. Bibcode:1989JAVSO..18...49F.