GJ 1289 b
Orbiting GJ 1289
GJ 1289 b is an exoplanet orbiting the star GJ 1289, discovered in 2024 using the Radial Velocity method.
Minimum Mass (M sin i)
6.27
Earth masses
Orbital Period
111.7
days
Distance
8.4
parsecs
Equilibrium Temp
150
K
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
6.27
Radial-velocity minimum
Equilibrium Temperature
150 K
Parameter source: Moutou et al. 2024
Orbital Period
111.740+0.730−0.710days
Semi-Major Axis
0.2700+0.0100−0.0100au
M sin(i) (Earth masses)
6.27+1.23−1.25
M sin(i) (Jupiter masses)
0.0197+0.0039−0.0039
Eccentricity
0.0000
Argument of Periastron
0.0deg
Radial Velocity Semi-Amplitude
2.37+0.43−0.45m/s
Distance from Earth
8.4 pc (~27 ly)
Spectral Type
M4.5 Ve
Temperature
3296 K
Mass (Solar)
0.21 M☉
Radius (Solar)
Unknown
Luminosity
Unknown
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
355.7813°, 36.5363°
Discovery Method
Radial Velocity
Discovery Year
2024
Source ID: GJ 1289 b
GJ 1289 b orbits GJ 1289 and was reported in 2024 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 6.27 Earth masses (M sin i), an orbital period of 111.74 days, and an equilibrium temperature near 150 K.
Catalog data places the system at about 8.4 parsecs from Earth, a host star classified as M4.5 Ve, 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 1289