Merope (star)
Merope /ˈmɛrəpiː/, 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.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 03h 46m 19.5859s |
| Declination | 23° 56′ 54.092″ |
| Apparent magnitude (V) | 4.18 |
| Characteristics | |
| Spectral type | B6IV(e) |
| U−B color index | −0.41 |
| B−V color index | −0.06 |
| Variable type | β Cephei |
| Astrometry | |
| Radial velocity (Rv) | 6.2 km/s |
| Proper motion (μ) | RA: 13.075 mas/yr Dec.: −48.404 mas/yr |
| Parallax (π) | 7.0670 ± 0.2862 mas |
| Distance | 460 ± 20 ly (142 ± 6 pc) |
| Absolute magnitude (MV) | −1.29 |
| Details | |
| Mass | 4.25 M☉ |
| Radius | 7.7 R☉ |
| Luminosity | 927 L☉ |
| Surface gravity (log g) | 3.48 cgs |
| Temperature | 14,550 K |
| Rotational velocity (v sin i) | 240 km/s |
| Age | 212 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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