AD Leonis
M-type star in the constellation Leo / From Wikipedia, the free encyclopedia
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AD Leonis (Gliese 388) is a red dwarf star. It is located relatively near the Sun, at a distance of 16.2 light-years (5.0 parsecs), in the constellation Leo. AD Leonis is a main sequence star with a spectral classification of M3.5V.[4] It is a flare star that undergoes random increases in luminosity.[5][8]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Leo |
Right ascension | 10h 19m 36.28082s[2] |
Declination | +19° 52′ 12.0104″[2] |
Apparent magnitude (V) | 9.32[3] |
Characteristics | |
Spectral type | M3.5eV[4] |
U−B color index | +1.06[3] |
B−V color index | +1.54[3] |
Variable type | Flare star[5] |
Astrometry | |
Radial velocity (Rv) | +10.67±0.21[2] km/s |
Proper motion (μ) | RA: –498.620 mas/yr[2] Dec.: –43.428 mas/yr[2] |
Parallax (π) | 201.4064 ± 0.0296 mas[2] |
Distance | 16.194 ± 0.002 ly (4.9651 ± 0.0007 pc) |
Absolute magnitude (MV) | 10.87[6] |
Details[7] | |
Mass | 0.423±0.012 M☉ |
Radius | 0.4233±0.0057 R☉ |
Luminosity | 0.02359±0.00011 L☉ |
Surface gravity (log g) | 5.12±0.12 cgs |
Temperature | 3,477±23 K |
Metallicity [Fe/H] | −0.19±0.12 dex |
Rotation | 2.2270+0.0010 −0.0011 d |
Rotational velocity (v sin i) | 2.4±1.5 km/s |
Age | 25-300[4] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Location of AD Leonis in the constellation Leo |
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