Gliese 69

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Gliese 69
Observation data
Epoch J2000        Equinox J2000
Constellation Cassiopeia
Right ascension 01h 43m 40.72450s [1]
Declination +63° 49 24.2390 [1]
Apparent magnitude  (V)8.40 [2]
Characteristics
Spectral type K5 Vbe [2]
U−B color index +1.12 [3]
B−V color index +1.22 [3]
Astrometry
Radial velocity (Rv)−50.827 ± 0.0075 [4]  km/s
Proper motion (μ)RA: −394.73 [1]   mas/yr
Dec.: −582.26 [1]   mas/yr
Parallax (π)73.65 ± 0.98  mas [1]
Distance 44.3 ± 0.6  ly
(13.6 ± 0.2  pc)
Details
Mass 0.624 [5]   M
Radius 0.59 [5]   R
Surface gravity (log g)4.70 [5]   cgs
Temperature 4312 [6]   K
Metallicity [Fe/H]−0.39 [6]   dex
Age 6.89 ± 4.70 [6]   Gyr
Other designations
BD+63° 229, GJ  69, HD  10436, HIP  8070, SAO  11943, LHS  1291. [7]
Database references
SIMBAD data
ARICNS data

Gliese 69 is a star located in the constellation of Cassiopeia. It has an apparent magnitude of 8.40. [2] Parallax measurements by Hipparcos put it at a distance of 44.3 light-years (13.6 parsecs) away. [1]

Gliese 69 is a K-type main-sequence star that is smaller and less massive than the Sun. [5] It glows with an effective temperature of 4,312 K. [6] It is around 6.9 billion years old, [6] significantly older than the Sun. Gliese 69 is also known by its designations HD 10436 and LHS 1291. [7]

Planetary System

In 2019 one candidate planet been detected by the radial velocity method. [8]

The Gliese 69 planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b 8.3+3.7
−3.2
  M🜨
0.043±0.0043.84237+0.00085
−0.00054
0.03+0.20
−0.03

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References

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Company, Sol. "Research: K stars within 100 light-years". Archived from the original on 24 December 2017. Retrieved 24 July 2011.