61 Virginis
Star in the constellation Virgo / From Wikipedia, the free encyclopedia
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61 Virginis (abbreviated 61 Vir) is the Flamsteed designation of a G-type main-sequence star (G7V) slightly less massive than the Sun (which has a hotter G2V spectral type), located 27.8 light-years (8.5 parsecs) away in the constellation of Virgo. The composition of this star is nearly identical to the Sun.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
61 Vir as seen with a 12.5" telescope with a field of view of 45.1 arcminutes | |
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Virgo |
Right ascension | 13h 18m 24.31399s[1] |
Declination | −18° 18′ 40.2977″[1] |
Apparent magnitude (V) | 4.74 |
Characteristics | |
Spectral type | G7V[2] |
Apparent magnitude (B) | 5.45 |
Apparent magnitude (J) | 3.334 |
Apparent magnitude (H) | 2.974 |
Apparent magnitude (K) | 2.956 |
U−B color index | 0.26 |
B−V color index | 0.71 |
V−R color index | 0.37 |
R−I color index | 0.33 |
Astrometry | |
Radial velocity (Rv) | −7.86±0.13[1] km/s |
Proper motion (μ) | RA: −1,070.202 mas/yr[1] Dec.: −1,063.849 mas/yr[1] |
Parallax (π) | 117.1726 ± 0.1456 mas[1] |
Distance | 27.84 ± 0.03 ly (8.53 ± 0.01 pc) |
Absolute magnitude (MV) | 5.07[3] |
Details | |
Mass | 0.93[4] M☉ |
Radius | 0.9867±0.0048[4] R☉ |
Luminosity | 0.8222±0.0033[4] L☉ |
Surface gravity (log g) | 4.5[5] cgs |
Temperature | 5538±13[4] K |
Metallicity [Fe/H] | −0.02[5] dex |
Rotation | 29 days[6] |
Rotational velocity (v sin i) | 3.9 ± 0.9[7] km/s |
Age | 6.1–6.6[8] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
ARICNS | data |
Close
61 Virginis (G7V) is the first well-established main-sequence star very similar to the Sun with a potential super-Earth,[9] though it was preceded by CoRoT-7 (a borderline orange dwarf).