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 Cep, BD+82° 743, FK5 1650, HD 224309, HIP 118027, HR 9056, SAO 3994[1]
Database references
SIMBADdata

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

References

  1. 1.0 1.1 1.2 1.3 Lua error in Module:Citation/CS1 at line 379: attempt to call method 'match' (a nil value).
  2. 2.0 2.1 2.2 2.3 2.4 Lua error in Module:Citation/CS1 at line 379: attempt to call method 'match' (a nil value).
  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. http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1985JAVSO..14...64H&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf.
  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. http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1989JAVSO..18...49F&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf.