GJ 9689 b
Orbiting GJ 9689
GJ 9689 b is an exoplanet orbiting the star GJ 9689, discovered in 2020 using the Radial Velocity method.
Minimum Mass (M sin i)
9.65
Earth masses
Orbital Period
18.3
days
Distance
30.6
parsecs
Equilibrium Temp
453
K
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
9.65
Radial-velocity minimum
Equilibrium Temperature
453 K
Parameter source: Maldonado et al. 2021
Orbital Period
18.270+0.010−0.010days
Semi-Major Axis
0.1139+0.0039−0.0039au
M sin(i) (Earth masses)
9.65+1.41−1.41
M sin(i) (Jupiter masses)
0.0304+0.0044−0.0044
Eccentricity
0.2900+0.1100−0.1300
Epoch of Periastron
2456406.17+1.00−0.89days(BJD)
Argument of Periastron
173.7+20.7−22.9deg
Radial Velocity Semi-Amplitude
3.48+0.44−0.42m/s
Distance from Earth
30.6 pc (~100 ly)
Spectral Type
M0.5
Temperature
3836 K
Mass (Solar)
0.59 M☉
Radius (Solar)
0.57 R☉
Luminosity
-1.20 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
303.4677°, 13.3889°
Discovery Method
Radial Velocity
Discovery Year
2020
Source ID: GJ 9689 b
GJ 9689 b orbits GJ 9689 and was reported in 2020 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 9.65 Earth masses (M sin i), an orbital period of 18.27 days, and an equilibrium temperature near 453 K.
Catalog data places the system at about 30.6 parsecs from Earth, a host star classified as M0.5, and 1 known planet in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open GJ 9689