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 |
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]
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]
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 |
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]
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]