TRAPPIST-1 d
Orbiting TRAPPIST-1
TRAPPIST-1 d is an exoplanet orbiting the star TRAPPIST-1, discovered in 2016 using the Transit method. It is a Earth-sized world.
Radius
0.79
Earth radii
Mass
0.39
Earth masses
Orbital Period
4.0
days
Radius (Earth radii)
0.79
Mass (Earth masses)
0.39
Measured
Equilibrium Temperature
Unknown
Parameter source: Agol et al. 2021
Orbital Period
4.049+0.000−0.000days
Semi-Major Axis
0.0223+0.0002−0.0002au
Planet Mass (Earth masses)
0.39+0.01−0.01
Planet Mass (Jupiter masses)
0.0012+0.0000−0.0000
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 d
TRAPPIST-1 d orbits TRAPPIST-1 and was reported in 2016 and was detected with the Transit method.
Published measurements list a radius of 0.79 Earth radii, a mass of 0.39 Earth masses, and an orbital period of 4.05 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