11 Persei is a single[11][8] star in the constellation of Perseus, located about 418 light years away from the Sun. It is visible to the naked eye as a dim, blue-white hued star with an apparent visual magnitude of 5.76.[2]
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Perseus |
Right ascension | 02h 43m 02.83826s[1] |
Declination | +55° 06′ 21.6700″[1] |
Apparent magnitude (V) | 5.76[2] |
Characteristics | |
Evolutionary stage | main sequence[3] |
Spectral type | B7 III(p?) (Hg?)[4] |
B−V color index | −0.110±0.003[2] |
Astrometry | |
Radial velocity (Rv) | −0.7±1.0[2] km/s |
Proper motion (μ) | RA: +34.859[1] mas/yr Dec.: −21.955[1] mas/yr |
Parallax (π) | 7.8022 ± 0.0874 mas[1] |
Distance | 418 ± 5 ly (128 ± 1 pc) |
Absolute magnitude (MV) | 0.16[2] |
Details | |
Mass | 3.77±0.06[3] M☉ |
Radius | 3.2[5] R☉ |
Luminosity | 210.4+21.9 −19.9[3] L☉ |
Surface gravity (log g) | 4.19[6] cgs |
Temperature | 14,550[6] K |
Metallicity [Fe/H] | +0.09[6] dex |
Rotation | 25–70 d[7] |
Rotational velocity (v sin i) | 4.50[8] km/s |
Age | 50.9±12.2[9] Myr |
Other designations | |
Database references | |
SIMBAD | data |
This is a chemically peculiar mercury-manganese star.[12][6] Cowley (1972) found a stellar classification of B7 III(p?) (Hg?),[4] while Hube (1970) had B8 IV,[13] and Appenzeller (1967) showed B6 V.[14] Stellar models indicate this is a young B-type main sequence star[3] with an estimated age of around 51[9] million years. It has a low rotation rate, showing a projected rotational velocity of 4.50 km/s.[8] The star has 3.8[3] times the mass of the Sun and is radiating 210[3] times the Sun's luminosity from its photosphere at an effective temperature of 14,550 K.[6]