RS Persei
Star in the constellation Perseus / From Wikipedia, the free encyclopedia
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RS Persei is a red supergiant variable star located in the Double Cluster in Perseus. The star's apparent magnitude varies from 7.82 to 10.0, meaning it is never visible to the naked eye.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 2h 22m 24.296s[1] |
Declination | +57° 06′ 34.10″[1] |
Apparent magnitude (V) | 7.82-10.0[2] |
Characteristics | |
Spectral type | M4Iab[3] |
Variable type | SRc[2] |
Astrometry | |
Radial velocity (Rv) | −38.0±2[4] km/s |
Proper motion (μ) | RA: −0.602[1] mas/yr Dec.: −1.107[1] mas/yr |
Parallax (π) | 0.3874 ± 0.0450 mas[1] |
Distance | approx. 8,400 ly (approx. 2,600 pc) |
Absolute magnitude (MV) | −6.18[5] |
Details | |
Mass | 12-15[6] M☉ |
Radius | 491[7] - 547[8] R☉ |
Luminosity | 33,000 - 34,000[7] L☉ |
Surface gravity (log g) | −0.2±0.05 cgs |
Temperature | 3,535±170[7] K |
Other designations | |
Database references | |
SIMBAD | data |
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