Electra (star)
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 03h 44m 52.53688s |
| Declination | +24° 06′ 48.0112″ |
| Apparent magnitude (V) | 3.70 |
| Characteristics | |
| Spectral type | B6 IIIe |
| U−B color index | −0.40 |
| B−V color index | −0.12 |
| Astrometry | |
| Radial velocity (Rv) | +10.9 km/s |
| Proper motion (μ) | RA: +20.84 mas/yr Dec.: −46.06 mas/yr |
| Parallax (π) | 8.06±0.25 mas |
| Distance | 444 ly (136 pc) |
| Absolute magnitude (MV) | −1.77 |
| Details | |
| Mass | 4.6-4.7 M☉ |
| Radius | 6.06+0.14 −0.15 R☉ |
| Luminosity | 940 L☉ |
| Surface gravity (log g) | 3.412±0.047 cgs |
| Temperature | 13,484±293 K |
| Rotational velocity (v sin i) | 181 km/s |
| Age | 115 Myr |
| Other designations | |
| 17 Tauri, BD+23 507, FK5 136, GC 4477, HD 23302, HIP 17499, HR 1142, SAO 76131, NSV 15755 | |
| Database references | |
| SIMBAD | data |
Electra /əˈlɛktrə/, designated 17 Tauri, is a blue-white giant star in the constellation of Taurus located approximately 440 light years away. It is the third-brightest star in the Pleiades open star cluster (M45), visible to the naked eye with an apparent magnitude of 3.7. Like the other bright stars of the Pleiades, it is named for one of the Seven Sisters of Greek mythology.