  | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 02h 21m 42.41s [1] |
| Declination | +57° 51′ 46.1″ [1] |
| Apparent magnitude (V) | 7.7 –8.2 [2] |
| Characteristics | |
| Evolutionary stage | Red supergiant |
| Spectral type | M1 Iab-Ib [2] |
| Variable type | LC [2] |
| Astrometry | |
| Radial velocity (Rv) | −45.9 [1] km/s |
| Proper motion (μ) | RA: −0.857 [1] mas/yr Dec.: −1.059 [1] mas/yr |
| Parallax (π) | 0.3621±0.0239 mas [1] |
| Distance | 9,000 ± 600 ly (2,800 ± 200 pc) |
| Details | |
| Mass | 9.2 [3] M☉ |
| Radius | 401 [4] R☉ |
| Luminosity | 27,542 [5] L☉ |
| Surface gravity (log g) | 0.89 [6] cgs |
| Temperature | 3,715 [5] K |
| Metallicity [Fe/H] | −0.22 [6] dex |
| Other designations | |
| PR Persei, BD+57°550, HD 14404, HIP 10995, SAO 23234, TIC 348442493, TYC 3694-152-1, IRAS 02181+5738, 2MASS J02214241+5751460 [7] | |
| Database references | |
| SIMBAD | data |
PR Persei (also known as HD 14404, HIP 10995, or BD+57 550) is a red supergiant star located in the constellation of Perseus in the northern celestial hemisphere. Classified as a variable star of spectral type M1-Iab-Ib, it exhibits mild brightness variations due to pulsations in its outer layers. It resides in the Milky Way galaxy, approximately 9,000 light-years from the Solar System. It can be seen near the Double Cluster of Perseus through a telescope or binoculars.
