KELT-20 b
A confirmed exoplanet orbiting KELT-20.
Compared with Earth
- Size
- About 20 times Earth's width.
- Mass
- About 1,075 times Earth's mass.
- Temperature
- About 1,989 °C (3,612 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 4,363 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 3.5 Earth days.
Planet
- Radius
- 19.51 × Earth
- Mass
- 1,075 × Earth
- Density
- 0.806 g/cm³
- Equilibrium temperature
- 2,262 K
- Starlight received
- 4,363 × Earth
- Orbital period
- 3.474 days
- Average distance from its star
- 0.0542 AU
Star
- Host star
- KELT-20
- Spectral class
- A — white
- Surface temperature
- 8,720 K
- Radius
- 1.565 × Sun
- Mass
- 1.76 × Sun
- Age
- 0.6 billion years
System
- Distance from Earth
- 445 light-years (136.4 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2017
- Method
- Transit
- Facility
- KELT-North
Data from the NASA Exoplanet Archive, synced October 14, 2026.