HD 77946 b
A confirmed exoplanet orbiting HD 77946.
Compared with Earth
- Size
- About 2.9 times Earth's width.
- Mass
- About 11 times Earth's mass.
- Temperature
- About 856 °C (1,572 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 6.5 Earth days.
Planet
- Radius
- 2.896 × Earth
- Mass
- 10.9 × Earth
- Density
- 2.44 g/cm³
- Equilibrium temperature
- 1,129 K
- Starlight received
- Unknown
- Orbital period
- 6.527 days
- Average distance from its star
- 0.073 AU
Star
- Host star
- HD 77946
- Spectral class
- F — yellow-white
- Surface temperature
- 6,007 K
- Radius
- 1.317 × Sun
- Mass
- 1.197 × Sun
- Age
- 3.1 billion years
System
- Distance from Earth
- 324.4 light-years (99.45 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2024
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.