WZ Cassiopeiae

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WZ Cassiopeiae
Observation data
Epoch J2000      Equinox J2000
Constellation Cassiopeia
Right ascension 00h 01m 15.9s
Declination +60° 21′ 19.0″
Apparent magnitude (V) 7.06
Spectral type CII
B−V color index 3.08
Variable type Semiregular
Radial velocity (Rv) -34 km/s
Proper motion (μ) RA: 9.57 mas/yr
Dec.: -6.49 mas/yr
Parallax (π) 1.27 ± 0.70 mas
Distance approx. 3,000 ly
(approx. 800 pc)
Temperature 3,000 K
Other designations
BD+59° 2810, HD 224855, HIP 99, SAO 21002.
Database references
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

WZ Cassiopeiae (WZ Cas) is a variable carbon star in the northern constellation of Cassiopeia. It varies between magnitudes 6.5 to 8.5 with a period of 186 days. The star is of a deep red colour and attended by a bluish companion, which is separated from the primary by 57.68 arcseconds.