PZ Cassiopeiae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 23h 44m 03.28104s |
| Declination | +61° 47′ 22.1823″ |
| Apparent magnitude (V) | 8.2 – 10.2 |
| Characteristics | |
| Evolutionary stage | Red supergiant |
| Spectral type | M3Iab |
| U−B color index | +1.32 |
| B−V color index | +2.58 |
| Variable type | SRc + Cepheid |
| Astrometry | |
| Radial velocity (Rv) | –45.68 km/s |
| Proper motion (μ) | RA: −4.15 mas/yr Dec.: −3.55 mas/yr |
| Parallax (π) | 0.356±0.026 mas |
| Distance | 2,810+220 −190 pc |
| Absolute magnitude (MV) | −7.89 |
| Details | |
| Mass | 20 or 25 (initial mass) M☉ |
| Radius | 1,260—1,340 R☉ |
| Luminosity | 229,000, (240,000 – 270,000) L☉ |
| Surface gravity (log g) | −0.5 cgs |
| Temperature | 3,605 K |
| Age | 8 or 10 Myr |
| Other designations | |
| PZ Cas, IRC +60417, HIP 117078, BD+60°2613, RAFGL 3138 | |
| Database references | |
| SIMBAD | data |
PZ Cassiopeiae is a red supergiant star located in the constellation of Cassiopeia, and a semi-regular variable star.