PZ Cassiopeiae
Star in the constellation Cassiopeia / From Wikipedia, the free encyclopedia
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PZ Cassiopeiae is a red supergiant star located in the constellation of Cassiopeia, and a semi-regular variable star.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 23h 44m 03.28104s[1] |
Declination | +61° 47′ 22.1823″[1] |
Apparent magnitude (V) | 8.2 – 10.2[2] |
Characteristics | |
Evolutionary stage | Red supergiant |
Spectral type | M3Iab[3] |
U−B color index | +1.32[4] |
B−V color index | +2.58[4] |
Variable type | SRc[5] + Cepheid[6] |
Astrometry | |
Radial velocity (Rv) | –45.68[7] km/s |
Proper motion (μ) | RA: −4.15[1] mas/yr Dec.: −3.55[1] mas/yr |
Parallax (π) | 0.356 ± 0.026 mas[8] |
Distance | 2,810+220 −190[8] pc |
Absolute magnitude (MV) | −7.89[9] |
Details | |
Mass | 20 or 25 (initial mass)[8] M☉ |
Radius | 1,259—1,336,[8][lower-alpha 1] 1,231[10] R☉ |
Luminosity | 229,000,[11] (240,000 – 270,000[8]) L☉ |
Surface gravity (log g) | −0.5[9] cgs |
Temperature | 3,605[3] K |
Age | 8 or 10[8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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