AD Leonis

AD Leonis

U, B, V and R light curves for a flare on AD Leonis, adapted from Hawley and Pettersen (1991)[1]
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]
Distance16.194 ± 0.002 ly
(4.9651 ± 0.0007 pc)
Absolute magnitude (MV)10.87[6]
Details[7]
Mass0.423±0.012 M☉
Radius0.4233±0.0057 R☉
Luminosity0.02359±0.00011 L☉
Surface gravity (log g)5.12±0.12 cgs
Temperature3,477±23 K
Metallicity [Fe/H]−0.19±0.12 dex
Rotation2.2270+0.0010
−0.0011 d
Rotational velocity (v sin i)2.4±1.5 km/s
Age25-300[4] Myr
Other designations
Gliese 388, BD+20 2465, G 54-23, LHS 5167, LTT 12761, NLTT 24015, SAO 81292, PLX 2420, TYC 1423-174-1[8]
Database references
SIMBADdata
AD Leonis is located in the constellation Leo.
AD Leonis is located in the constellation Leo.
AD Leonis
Location of AD Leonis in the constellation Leo

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]

  1. ^ Cite error: The named reference Hawley1991 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference aaass34_1 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference apj699 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference gcvs71 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference RECONS was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Kossakowski2022 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference SIMBAD was invoked but never defined (see the help page).