Epsilon Virginis
Epsilon Virginis (ε Virginis, abbreviated Epsilon Vir, ε Vir), formally named Vindemiatrix /vɪndiːmiˈeɪtrɪks/, is a star in the zodiac constellation of Virgo. The apparent visual magnitude of this star is +2.8, making it the third-brightest member of Virgo. Based upon parallax measurements made during the Hipparcos mission, Vindemiatrix lies at a distance of about 109.6 light-years (33.6 parsecs) from the Sun, give or take a half light-year.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 13h 02m 10.59785s |
| Declination | +10° 57′ 32.9415″ |
| Apparent magnitude (V) | +2.826 |
| Characteristics | |
| Spectral type | G8 III |
| U−B color index | +0.718 |
| B−V color index | +0.940 |
| Astrometry | |
| Radial velocity (Rv) | -14.6 km/s |
| Proper motion (μ) | RA: -273.80 mas/yr Dec.: +19.96 mas/yr |
| Parallax (π) | 29.76 ± 0.14 mas |
| Distance | 109.6 ± 0.5 ly (33.6 ± 0.2 pc) |
| Absolute magnitude (MV) | 0.37 ± 0.06 |
| Details | |
| Mass | 2.64 ± 0.11 M☉ |
| Radius | 10.6 ± 0.3 R☉ |
| Luminosity | 77 L☉ |
| Surface gravity (log g) | 2.71 ± 0.04 cgs |
| Temperature | 5,086 K |
| Metallicity [Fe/H] | +0.09 dex |
| Rotation | 173 days |
| Rotational velocity (v sin i) | 2.3 km/s |
| Age | 560 ± 90 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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