Nu Cephei

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Nu Cephei
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cepheus
Right ascension 21h 45m 26.925s[1]
Declination +61° 07′ 14.90″[1]
Apparent magnitude (V) 4.312
Characteristics
Spectral type A2Iab
Apparent magnitude (U) 4.95
Apparent magnitude (B) 4.740
Apparent magnitude (J) 3.296
Apparent magnitude (H) 3.215
Apparent magnitude (K) 2.942
U−B color index +0.21
B−V color index +0.428
Variable type Alpha Cygni
Astrometry
Radial velocity (Rv) −20.8 km/s
Proper motion (μ) RA: −3.74 ± 0.13[1] mas/yr
Dec.: −2.10 ± 0.12[1] mas/yr
Parallax (π) 0.48 ± 0.14[1] mas
Distance approx. 7,000 ly
(approx. 2,100 pc)
Absolute magnitude (MV) −6.65
Details
Mass 15 M
Radius 83.5 R
Luminosity 51,000 L
Temperature 9,500 K
Other designations
10 Cephei, HD 207260, HR 8334, SAO 19624, FK5 1572, BD +60 2288, HIP 107418

Nu Cephei is a Class A2, fourth-magnitude star in the constellation Cepheus. Nu Cephei is a white pulsating variable star and multiple star system, located about 7000 light-years from Earth.

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

External links[edit]