WZ Cephei
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cepheus |
| Right ascension | 23h 22m 24.193s |
| Declination | +72° 54′ 56.83″ |
| Apparent magnitude (V) | +11.22 |
| Characteristics | |
| Spectral type | F5V+F5V |
| Variable type | W Ursae Majoris-type |
| Astrometry | |
| Proper motion (μ) | RA: 18.655±0.013 mas/yr Dec.: −37.713±0.012 mas/yr |
| Parallax (π) | 3.3419±0.0105 mas |
| Distance | 976 ± 3 ly (299.2 ± 0.9 pc) |
| Orbit | |
| Period (P) | 0.00114 yr |
| Semi-major axis (a) | 0.013 AU |
| Eccentricity (e) | 0.0 |
| Inclination (i) | 86.2° |
| Details | |
| A | |
| Mass | 1.1 M☉ |
| Radius | 1.4 R☉ |
| Luminosity | 3 L☉ |
| Temperature | 6400 K |
| B | |
| Mass | 0.83 M☉ |
| Radius | 0.82 R☉ |
| Luminosity | 1 L☉ |
| Other designations | |
| WZ Cep, 2MASS J23222421+7254566, 1RXS J232216.6+725505 | |
| Database references | |
| SIMBAD | data |
WZ Cephei is an eclipsing binary star of W Ursae Majoris-type in the constellation of Cepheus, located 976 light years away from the Sun. The stars orbit around a common orbital barycenter every 0.41744 days (slightly over 10 hours). Timing analyses have revealed the possible presence of a third low-mass stellar companion in a wide orbit.
Heribert Schneller announced the discovery that the star is a variable star, in 1928.