Epsilon Virginis
Star in the constellation Virgo / From Wikipedia, the free encyclopedia
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Epsilon Virginis (ε Virginis, abbreviated Epsilon Vir, ε Vir), formally named Vindemiatrix /vɪndiːmiˈeɪtrɪks/,[11][12] is a star in the zodiac constellation of Virgo. The apparent visual magnitude of this star is +2.8,[2] 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.[1]
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Virgo |
Right ascension | 13h 02m 10.59785s[1] |
Declination | +10° 57′ 32.9415″[1] |
Apparent magnitude (V) | +2.826[2] |
Characteristics | |
Spectral type | G8 III[3] |
U−B color index | +0.718[2] |
B−V color index | +0.940[2] |
Astrometry | |
Radial velocity (Rv) | -14.6[4] km/s |
Proper motion (μ) | RA: -273.80[1] mas/yr Dec.: +19.96[1] mas/yr |
Parallax (π) | 29.76 ± 0.14 mas[1] |
Distance | 109.6 ± 0.5 ly (33.6 ± 0.2 pc) |
Absolute magnitude (MV) | 0.37 ± 0.06[5] |
Details | |
Mass | 2.64 ± 0.11[5] M☉ |
Radius | 10.6 ± 0.3[6] R☉ |
Luminosity | 77[7] L☉ |
Surface gravity (log g) | 2.71 ± 0.04[5] cgs |
Temperature | 5,086[5] K |
Metallicity [Fe/H] | +0.09[5] dex |
Rotation | 173 days[8] |
Rotational velocity (v sin i) | 2.3[9] km/s |
Age | 560 ± 90[5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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