Gliese 163

Gliese 163
Observation data
Epoch J2000      Equinox J2000
Constellation Dorado
Right ascension 04h 09m 15.66834s[1]
Declination −53° 22′ 25.2900″[1]
Apparent magnitude (V) 11.79[2]
Characteristics
Spectral type M3.5V[3]
B−V color index 1.480±0.008[2]
Astrometry
Radial velocity (Rv)58.30±0.24[1] km/s
Proper motion (μ) RA: 1046.236±0.019 mas/yr[1]
Dec.: 584.166±0.023 mas/yr[1]
Parallax (π)66.0705 ± 0.0172 mas[1]
Distance49.36 ± 0.01 ly
(15.135 ± 0.004 pc)
Absolute magnitude (MV)10.91[2]
Details
Mass0.405±0.010[4] M☉
Radius0.409+0.017
−0.016[4] R☉
Luminosity0.02163±0.00063[4] L☉
Surface gravity (log g)4.87[5] cgs
Temperature3,460+76
−74[4] K
Metallicity [Fe/H]0.1±0.1[6] dex
Rotation61.0±0.3 d[7]
Rotational velocity (v sin i)0.85[8] km/s
Age5[9] Gyr
Other designations
GJ 163, HIP 19394, LHS 188, LTT 1881[10]
Database references
SIMBADdata
Planets Under a Red Sun

Gliese 163 is a faint red dwarf star with multiple exoplanetary companions in the southern constellation of Dorado. Other stellar catalog names for it include HIP 19394 and LHS 188.[10] It is too faint to be visible to the naked eye, having an apparent visual magnitude of 11.79[2] and an absolute magnitude of 10.91.[2] This system is located at a distance of 49.4 light-years from the Sun based on parallax measurements.[1] Judging by its space velocity components, it is most likely a thick disk star.[3]

This is a small M-type main-sequence star with a stellar classification of M3.5V.[3] It has a relatively low activity level for a red dwarf of its mass, suggesting it is an old star with an age of at least two billion years.[6] This star has 41% of the mass and radius of the Sun.[4] It is spinning slowly with a projected rotational velocity of 0.85 km/s[8] and has a rotation period of 61 days.[7] The star is radiating just 2%[6] of the luminosity of the Sun from its photosphere at an effective temperature of 3,460 K.[4]

  1. ^ a b c d e f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Reid_et_al_1995 was invoked but never defined (see the help page).
  4. ^ a b c d e f Cite error: The named reference Pineda_et_al_2021 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Santos_et_al_2013 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Tuomi was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference mnras452_3_2745 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Houdebine_et_al_2016 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Linsky_et_al_2020 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Simbad-20120920 was invoked but never defined (see the help page).