Zeta Persei
Star in the constellation Perseus / From Wikipedia, the free encyclopedia
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Zeta Persei (ζ Per, ζ Persei) is a star in the northern constellation of Perseus. With an apparent visual magnitude of 2.9,[2] it can be readily seen with the naked eye. Parallax measurements place it at a distance of about 750 light-years (230 parsecs) from Earth.[1]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 03h 54m 07.92248s[1] |
Declination | +31° 53′ 01.0812″[1] |
Apparent magnitude (V) | 2.86[2] |
Characteristics | |
Spectral type | B1 Ib[3] |
U−B color index | –0.72[2] |
B−V color index | +0.10[2] |
Astrometry | |
Radial velocity (Rv) | 20.1 ± 1.2[4] km/s |
Proper motion (μ) | RA: +5.77[1] mas/yr Dec.: –9.92[1] mas/yr |
Parallax (π) | 4.34 ± 0.19 mas[1] |
Distance | 750 ± 30 ly (230 ± 10 pc) |
Absolute magnitude (MV) | −3.91[5] |
Details | |
Mass | 14.5 ± 1.9[6] M☉ |
Radius | 26–27[7] R☉ |
Luminosity | 47,039[6] L☉ |
Temperature | 20,800[6] K |
Rotation | 2.9–17.3 days[citation needed] |
Rotational velocity (v sin i) | 40[3] km/s |
Age | 12.6 ± 1.5[8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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