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 |
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.
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).
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