Nu Cassiopeiae

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ν Cassiopeiae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cassiopeia
Right ascension 00h 48m 50.022s[1]
Declination +50° 58′ 05.40″[1]
Apparent magnitude (V) +4.90
Spectral type B9III
U−B color index −0.42
B−V color index −0.11
Variable type none
Radial velocity (Rv) +009 km/s
Proper motion (μ) RA: 30.84 ± 0.22[1] mas/yr
Dec.: −10.02 ± 0.18[1] mas/yr
Parallax (π) 7.92 ± 0.32[1] mas
Distance 410 ± 20 ly
(126 ± 5 pc)
Absolute magnitude (MV) −0.48
Other designations
25 Cassiopeiae, HR 223, HD 4636, BD+50°147, HIP 3801, SAO 21729
Database references
Map of the Bayer-designated stars in Cassiopeia. Nu Cassiopeiae is circled.

Nu Cassiopeiae (ν Cas, ν Cassiopeiae) is a star in the constellation Cassiopeia. ν Cassiopeiae is a blue-white B-type giant with an apparent magnitude of +4.90. It is approximately 410 light years from Earth.[1]


  1. ^ a b c d e f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357. Vizier catalog entry