Nu Cassiopeiae
B-type star in the constellation Cassiopeia / From Wikipedia, the free encyclopedia
Nu Cassiopeiae,[11] Latinized from ν Cassiopeiae, is a solitary[12] star in the northern constellation of Cassiopeia. With an apparent visual magnitude of +4.89,[2] it is a faint star but visible to the naked eye. Based upon an annual parallax shift of 7.92 mas as seen from Earth,[1] this star is located around 410 light years from the Sun. Cowley et al. (1969) catalogued this star with a stellar classification of B9 III,[3] indicating it has the spectrum of an evolved B-type giant star. However, Palmer et al. (1968) assigned it a class of B8 V, which would instead suggest it is an ordinary B-type main-sequence star.[4]
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Cassiopeia |
Right ascension | 00h 43m 28.07045s[1] |
Declination | +47° 01′ 28.3694″[1] |
Apparent magnitude (V) | +4.89[2] |
Characteristics | |
Spectral type | B9 III[3] or B8 V[4] |
U−B color index | −0.43[5] |
B−V color index | −0.11[5] |
Astrometry | |
Radial velocity (Rv) | +9.0±4.2[6] km/s |
Proper motion (μ) | RA: +30.84±0.22[1] mas/yr Dec.: −10.02±0.18[1] mas/yr |
Parallax (π) | 7.92 ± 0.32 mas[1] |
Distance | 410 ± 20 ly (126 ± 5 pc) |
Absolute magnitude (MV) | −0.60[7] |
Details | |
Mass | 3.90±0.07[8] M☉ |
Luminosity | 348[8] L☉ |
Surface gravity (log g) | 4.026±0.035[9] cgs |
Temperature | 13,268±150[9] K |
Rotational velocity (v sin i) | 134±17[9] km/s |
Other designations | |
Database references | |
SIMBAD | data |
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