10 Persei
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 02h 25m 16.02834s |
| Declination | +56° 36′ 35.3544″ |
| Apparent magnitude (V) | 6.26 |
| Characteristics | |
| Evolutionary stage | Blue supergiant |
| Spectral type | B2Ia |
| U−B color index | −0.61 |
| B−V color index | +0.30 |
| Variable type | α Cyg |
| Astrometry | |
| Radial velocity (Rv) | −39.87±1.93 km/s |
| Proper motion (μ) | RA: −0.508 mas/yr Dec.: −1.182 mas/yr |
| Parallax (π) | 0.4424±0.0263 mas |
| Distance | 7000±815 ly (2,150±250 pc) |
| Absolute magnitude (MV) | −6.70 |
| Details | |
| Mass | 23.6±1.9 M☉ |
| Radius | 49±6 R☉ |
| Luminosity | 257,000 L☉ |
| Surface gravity (log g) | 2.45±0.07 cgs |
| Temperature | 18,600±300 K |
| Rotational velocity (v sin i) | 48±6 km/s |
| Age | 7.76 Myr |
| Other designations | |
| V554 Persei, HR 696, HD 14818, BD+55°612, HIP 11279, SAO 23304, GC 2885 | |
| Database references | |
| SIMBAD | data |
10 Persei is a blue supergiant star in the constellation Perseus. Its apparent magnitude is 6.26 although it is slightly variable.
10 Persei is located around 3,333 parsecs (10,870 ly) distant in the Perseus OB1 stellar association. It lies close to the Double Cluster and is considered a cluster member.
In 1999, 10 Persei was given the variable star designation V554 Persei, after being identified as varying in Hipparcos photometry. Its brightness varies by less than a tenth of a magnitude with no clear period.