HATS-77 b
A confirmed exoplanet orbiting HATS-77.
Compared with Earth
- Size
- About 13 times Earth's width.
- Mass
- About 437 times Earth's mass.
- Temperature
- About 555 °C (1,031 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 78 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 3.1 Earth days.
Planet
- Radius
- 13.06 × Earth
- Mass
- 436.7 × Earth
- Density
- 1.077 g/cm³
- Equilibrium temperature
- 828.3 K
- Starlight received
- 78.37 × Earth
- Orbital period
- 3.088 days
- Average distance from its star
- 0.03607 AU
Star
- Host star
- HATS-77
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,071 K
- Radius
- 0.6428 × Sun
- Mass
- 0.655 × Sun
- Age
- 12.1 billion years
System
- Distance from Earth
- 1,423 light-years (436.2 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2021
- Method
- Transit
- Facility
- HATSouth
Data from the NASA Exoplanet Archive, synced October 14, 2026.