V Cephei

From Wikipedia, the free encyclopedia
Jump to: navigation, search
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]
Spectral type A3V[2]
B−V color index 0.064[2]
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 Cep, BD+82° 743, FK5 1650, HD 224309, HIP 118027, HR 9056, SAO 3994[1]
Database references

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]


  1. ^ a b c d "V* V Cep". 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?" (PDF). 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" (PDF). The Journal of the American Association of Variable Star Observers. 18 (1): 49–51. Bibcode:1989JAVSO..18...49F.