Kappa Cephei

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Kappa Cephei
Observation data
Epoch J2000      Equinox J2000
Constellation Cepheus
Right ascension 20h 08m 53.348s[1]
Declination +77° 42′ 41.12″[1]
Apparent magnitude (V) 4.38
Characteristics
Spectral type B9 III + A7 V
U−B color index -0.11
B−V color index -0.05
Variable type None
Astrometry
Radial velocity (Rv) −22.8 ± 0.9 km/s
Proper motion (μ) RA: 11.57 ± 0.29[1] mas/yr
Dec.: 24.34 ± 0.33[1] mas/yr
Parallax (π) 10.36 ± 0.29[1] mas
Distance 315 ± 9 ly
(97 ± 3 pc)
Absolute magnitude (MV) 4.355
Details
Radius 4.45 ± 0.22[2] R
Surface gravity (log g) 3.66 ± 0.03[2] cgs
Temperature 10,174 ± 55[2] K
Other designations
kap Cep, 1 Cep, BD+77° 764, GSC 04589-03106, HD 192907, HIP 99255, HR 7750, SAO 9665.

Kappa Cephei (κ Cep) is a double star in the constellation Cepheus.

References[edit]

  1. ^ a b c d e van Leeuwen, F. (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. Vizier catalog entry
  2. ^ a b c Fitzpatrick, E. L.; Massa, D. (March 2005), "Determining the Physical Properties of the B Stars. II. Calibration of Synthetic Photometry", The Astronomical Journal 129 (3): 1642–1662, arXiv:astro-ph/0412542, Bibcode:2005AJ....129.1642F, doi:10.1086/427855 

External links[edit]