CS Camelopardalis

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CS Camelopardalis

CS Camelopardalis
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension 03h 29m 04.1335s
Declination +59° 56′ 25.188″
Apparent magnitude (V) 4.259
Spectral type B9Ia
U−B color index -0.24
B−V color index 0.41
R−I color index 0.38
Variable type Alpha Cygni variable
Radial velocity (Rv) -6.8 km/s
Proper motion (μ) RA: -0.82 mas/yr
Dec.: -1.85 mas/yr
Parallax (π) 0.76 ± 0.89 mas
Distance approx. 4,000 ly
(approx. 1,000 pc)
Absolute magnitude (MV) -6.39
Mass 17.5 M
Radius 63.3 R
Temperature 11,600 K
Rotation 29 km/s
0,0335 Year
Companion CCDM 03291+5956 B
STF 385
Semi-major axis (a) 2.4"
Inclination (i) 162°
Other designations
B Cam, 2H.Cam, ADS 2544, CCDM 03291+5956, GC (Boss) 4113, HD 21291, HIP 16228, SAO 24054.
Database references
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

CS Camelopardalis (CS Cam) is a binary star in reflection nebulae vdB 14, in the constellation Camelopardalis. It was designated B Cam[1] or 2H.Cam.

The primary component, CS Camelopardalis A, is a blue-white B-type supergiant with a mean apparent magnitude of 4.21m. It is classified as an Alpha Cygni type variable star and its brightness varies from magnitude 4.19m to 4.23m. Its companion, CS Camelopardalis B, is a magnitude 8.7m star located 2.9 arcseconds from the primary.


  1. ^ The designation was introduced by Bode.

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