10 Persei
Blue-supergiant star in the constellation Perseus / From Wikipedia, the free encyclopedia
10 Persei is a blue supergiant star in the constellation Perseus. Its apparent magnitude is 6.26 although it is slightly variable.
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 02h 25m 16.02916s[1] |
Declination | +56° 36′ 35.3536″[1] |
Apparent magnitude (V) | 6.26[2] |
Characteristics | |
Evolutionary stage | Blue supergiant |
Spectral type | B2Ia[3] |
U−B color index | −0.61[2] |
B−V color index | +0.30[2] |
Variable type | α Cyg[4] |
Astrometry | |
Radial velocity (Rv) | −46.0[5] km/s |
Proper motion (μ) | RA: −0.08[1] mas/yr Dec.: −1.50[1] mas/yr |
Parallax (π) | 0.30 ± 0.41 mas[6] |
Absolute magnitude (MV) | −6.70[7] |
Details[7] | |
Mass | 26 M☉ |
Radius | 51.4 R☉ |
Luminosity | 250,000 L☉ |
Surface gravity (log g) | 2.38 cgs |
Temperature | 18,000 K |
Rotational velocity (v sin i) | 82 km/s |
Other designations | |
Database references | |
SIMBAD | data |
Close
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.[8]
In 1999, 10 Persei was given the variable star designation V554 Persei, after being identified as varying in Hipparcos photometry.[10] Its brightness varies by less than a tenth of a magnitude with no clear period.[4]