Gliese 12 b
Orbiting Gliese 12
Gliese 12 b is an exoplanet orbiting the star Gliese 12, discovered in 2024 using the Transit method. It is a Earth-sized world.
Radius
0.93
Earth radii
Mass
0.95
Earth masses
Orbital Period
12.8
days
Distance
12.2
parsecs
Radius (Earth radii)
0.93
Mass (Earth masses)
0.95
Measured
Equilibrium Temperature
Unknown
Parameter source: Turner et al. 2026
Orbital Period
12.761+0.000−0.000days
Planet Mass (Earth masses)
0.95+0.29−0.30
Planet Mass (Jupiter masses)
0.0030+0.0009−0.0009
Eccentricity
0.2400+0.1300−0.1300
Argument of Periastron
-16.0+68.0−41.0deg
Radial Velocity Semi-Amplitude
0.67+0.21−0.21m/s
Distance from Earth
12.2 pc (~40 ly)
Spectral Type
Unknown
Temperature
3328 K
Mass (Solar)
0.26 M☉
Radius (Solar)
0.27 R☉
Luminosity
Unknown
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
3.9579°, 13.5576°
Discovery Method
Transit
Discovery Year
2024
Source ID: Gliese 12 b
Gliese 12 b orbits Gliese 12 and was reported in 2024 and was detected with the Transit method.
Published measurements list a radius of 0.93 Earth radii, a mass of 0.95 Earth masses, and an orbital period of 12.76 days.
Catalog data places the system at about 12.2 parsecs from Earth 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 Gliese 12