TRAPPIST-1 b
Orbiting TRAPPIST-1
TRAPPIST-1 b is an exoplanet orbiting the star TRAPPIST-1, discovered in 2016 using the Transit method. It is a Earth-sized world.
Radius
1.12
Earth radii
Mass
1.37
Earth masses
Orbital Period
1.5
days
Radius (Earth radii)
1.12
Mass (Earth masses)
1.37
Measured
Equilibrium Temperature
Unknown
Parameter source: Agol et al. 2021
Orbital Period
1.511+0.000−0.000days
Semi-Major Axis
0.0115+0.0001−0.0001au
Planet Mass (Earth masses)
1.37+0.07−0.07
Planet Mass (Jupiter masses)
0.0043+0.0002−0.0002
Distance from Earth
Unknown
Spectral Type
Unknown
Temperature
2566 K
Mass (Solar)
0.09 M☉
Radius (Solar)
0.12 R☉
Luminosity
-3.26 log L☉
Planets in System
7
Stars in System
1
Coordinates (RA, Dec)
346.6264°, -5.0435°
Discovery Method
Transit
Discovery Year
2016
Source ID: TRAPPIST-1 b
TRAPPIST-1 b orbits TRAPPIST-1 and was reported in 2016 and was detected with the Transit method.
Published measurements list a radius of 1.12 Earth radii, a mass of 1.37 Earth masses, and an orbital period of 1.51 days.
Catalog data places 7 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open TRAPPIST-1More planets in this system