Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Virgo |
Right ascension | 12h 18m 59.3999s[2] |
Declination | +11° 07′ 33.7702″[2] |
Apparent magnitude (V) | 13.898[3] |
Characteristics | |
Spectral type | M5[4] |
U−B color index | +1.065[5] |
B−V color index | +1.88[5] |
Variable type | Flare star |
Astrometry | |
Radial velocity (Rv) | 5.82[3] km/s |
Proper motion (μ) | RA: −1269.771±0.056[6] mas/yr Dec.: 203.444±0.033[6] mas/yr |
Parallax (π) | 154.6999 ± 0.0445 mas[6] |
Distance | 21.083 ± 0.006 ly (6.464 ± 0.002 pc) |
Absolute magnitude (MV) | 14.72[7] |
Details | |
Mass | 0.12[7] M☉ |
Radius | 0.16[8] R☉ |
Surface gravity (log g) | 5.0[9] cgs |
Temperature | 3110[9] K |
Metallicity [Fe/H] | 0.17[10] dex |
Rotational velocity (v sin i) | 17[8] km/s |
Other designations | |
Database references | |
SIMBAD | data |
GL Virginis, also known as G 12-30, is a star in the constellation of Virgo. It is a faint red dwarf, like more than 70% of the stars located within 10 parsecs of the Solar System; its magnitude visual magnitude is 13.898, making it impossible to see with the naked eye.
Located 21.1 light years away, GL Virginis has a spectral type of M4.5V and an effective temperature of approximately 3110 K.[9] Its luminosity (emitted in the visible section of the electromagnetic spectrum) is only one ten-thousandth compared to the Sun; however, since a significant fraction of its radiation is emitted as invisible infrared light, its bolometric luminosity increases to 0.5% of that of the Sun. Its mass is 12% that of the Sun[7] and its radius is 16% of the Sun.[8] It is a fairly rapid rotator: its rotational velocity is least 17 km/s,[8] which implies that it takes less than half a day to complete a rotation on its axis. The star is emitting a frequent flares, with at least five detected by 2019.[4]
The closest known star system to GL Virginis is Gliese 486, 6.4 light-years away.[11]
Alonso
was invoked but never defined (see the help page).Gaia DR2
was invoked but never defined (see the help page).