HATS-66 b

A confirmed exoplanet orbiting HATS-66.

Compared with Earth

Size
About 16 times Earth's width.
Mass
About 1,694 times Earth's mass.
Temperature
About 1,725 °C (3,137 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
Starlight
About 2,637 times the starlight Earth gets from the Sun.
Year
A year here lasts about 3.1 Earth days.

Planet

Radius
15.82 × Earth
Mass
1,694 × Earth
Density
2.34 g/cm³
Equilibrium temperature
1,998 K
Starlight received
2,637 × Earth
Orbital period
3.141 days
Average distance from its star
0.04714 AU

Star

Host star
HATS-66
Spectral class
F — yellow-white
Surface temperature
6,626 K
Radius
1.841 × Sun
Mass
1.411 × Sun
Age
2.17 billion years

System

Distance from Earth
4,821 light-years (1,478 parsecs)
Stars in system
1
Known planets
1

Discovery

Year
2018
Method
Transit
Facility
HATSouth

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