Exoplanet

WASP-121 b

Orbiting WASP-121

Overview

WASP-121 b is an exoplanet orbiting the star WASP-121, discovered in 2016 using the Transit method. It is a Jupiter-sized world.

Key Measurements

Radius

19.53

Earth radii

015 R⊕

Mass

371.86

Earth masses

0500 M⊕

Orbital Period

1.3

days

0.1d10,000d

Distance

269.9

parsecs

Nearby10,000 pc

Equilibrium Temp

2409

K

150 K3,500 K

Radius (Earth radii)

19.53

Mass (Earth masses)

371.86

Measured

Equilibrium Temperature

2409 K

Orbital Period

1.27 days

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

Data Sources

Source ID: WASP-121 b

System Context

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