WASP-121 b
Orbiting WASP-121
WASP-121 b is an exoplanet orbiting the star WASP-121, discovered in 2016 using the Transit method. It is a Jupiter-sized world.
Radius
19.53
Earth radii
Mass
371.86
Earth masses
Orbital Period
1.3
days
Distance
269.9
parsecs
Equilibrium Temp
2409
K
Radius (Earth radii)
19.53
Mass (Earth masses)
371.86
Measured
Equilibrium Temperature
2409 K
Parameter source: Sing et al. 2024
Orbital Period
1.275+0.000−0.000days
Semi-Major Axis
0.0257+0.0001−0.0001au
Planet Mass (Earth masses)
371.86+13.67−13.67
Planet Mass (Jupiter masses)
1.1700+0.0430−0.0430
Radial Velocity Semi-Amplitude
181.10+6.40−6.40m/s
Distance from Earth
269.9 pc (~880 ly)
Spectral Type
Unknown
Temperature
6628 K
Mass (Solar)
1.33 M☉
Radius (Solar)
1.46 R☉
Luminosity
Unknown
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
107.6002°, -39.0973°
Discovery Method
Transit
Discovery Year
2016
Source ID: WASP-121 b
WASP-121 b orbits WASP-121 and was reported in 2016 and was detected with the Transit method.
Published measurements list a radius of 19.53 Earth radii, a mass of 371.86 Earth masses, an orbital period of 1.27 days, and an equilibrium temperature near 2,409 K.
Catalog data places the system at about 269.9 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 WASP-121