WASP-99 b

A confirmed exoplanet orbiting WASP-99.

Compared with Earth

Size
About 11 times Earth's width.
Mass
About 772 times Earth's mass.
Year
A year here lasts about 5.8 Earth days.

Planet

Radius
11.43 × Earth
Mass
772.3 × Earth
Density
Unknown
Equilibrium temperature
Unknown
Starlight received
Unknown
Orbital period
5.753 days
Average distance from its star
Unknown

Star

Host star
WASP-99
Spectral class
F — yellow-white
Surface temperature
6,150 K
Radius
1.64 × Sun
Mass
1.21 × Sun
Age
Unknown

System

Distance from Earth
517.5 light-years (158.7 parsecs)
Stars in system
1
Known planets
1

Discovery

Year
2014
Method
Transit
Facility
SuperWASP

Data from the NASA Exoplanet Archive, synced October 14, 2026.