HD 191939 e
A confirmed exoplanet orbiting HD 191939.
Compared with Earth
- Mass
- About 112 times Earth's mass.
- Temperature
- About 117 °C (242 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 3.9 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 101 Earth days.
Planet
- Radius
- Unknown
- Mass
- 112.2 × Earth
- Density
- Unknown
- Equilibrium temperature
- 390 K
- Starlight received
- 3.9 × Earth
- Orbital period
- 101.1 days
- Average distance from its star
- 0.407 AU
Star
- Host star
- HD 191939
- Spectral class
- G — sun-like
- Surface temperature
- 5,348 K
- Radius
- 0.94 × Sun
- Mass
- 0.81 × Sun
- Age
- 8.7 billion years
System
- Distance from Earth
- 174.8 light-years (53.61 parsecs)
- Stars in system
- 1
- Known planets
- 6
Discovery
- Year
- 2022
- Method
- Radial Velocity
- Facility
- W. M. Keck Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.