Merope (star)
B-type subgiant star in the constellation Taurus / From Wikipedia, the free encyclopedia
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Merope /ˈmɛrəpiː/,[12] designated 23 Tauri (abbreviated 23 Tau), is a star in the constellation of Taurus and a member of the Pleiades star cluster. It is approximately 440 light-years (135 pc) away.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Taurus |
Right ascension | 03h 46m 19.5859s[1] |
Declination | 23° 56′ 54.092″[1] |
Apparent magnitude (V) | 4.18[2] |
Characteristics | |
Spectral type | B6IV(e)[3] |
U−B color index | −0.41[4] |
B−V color index | −0.06[4] |
Variable type | β Cephei[5] |
Astrometry | |
Radial velocity (Rv) | 6.2[6] km/s |
Proper motion (μ) | RA: 13.075[1] mas/yr Dec.: −48.404[1] mas/yr |
Parallax (π) | 7.0670 ± 0.2862 mas[1] |
Distance | 460 ± 20 ly (142 ± 6 pc) |
Absolute magnitude (MV) | −1.29[7] |
Details | |
Mass | 4.25[8] M☉ |
Radius | 7.7[9] R☉ |
Luminosity | 927[10] L☉ |
Surface gravity (log g) | 3.48[10] cgs |
Temperature | 14,550[10] K |
Rotational velocity (v sin i) | 240[10] km/s |
Age | 212[11] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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