HAT-P-61 b

A confirmed exoplanet orbiting HAT-P-61.

Compared with Earth

Size
About 10 times Earth's width.
Mass
About 336 times Earth's mass.
Temperature
About 1,232 °C (2,249 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
Starlight
About 850 times the starlight Earth gets from the Sun.
Year
A year here lasts about 1.9 Earth days.

Planet

Radius
10.08 × Earth
Mass
335.9 × Earth
Density
1.8 g/cm³
Equilibrium temperature
1,505 K
Starlight received
849.5 × Earth
Orbital period
1.902 days
Average distance from its star
0.0301 AU

Star

Host star
HAT-P-61
Spectral class
G — sun-like
Surface temperature
5,587 K
Radius
0.938 × Sun
Mass
1.004 × Sun
Age
2.6 billion years

System

Distance from Earth
1,105 light-years (338.8 parsecs)
Stars in system
1
Known planets
1

Discovery

Year
2021
Method
Transit
Facility
HATNet

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