KELT-18 b
A confirmed exoplanet orbiting KELT-18.
Compared with Earth
- Size
- About 18 times Earth's width.
- Mass
- About 375 times Earth's mass.
- Temperature
- About 1,812 °C (3,293 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 3,152 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 2.9 Earth days.
Planet
- Radius
- 17.6 × Earth
- Mass
- 375 × Earth
- Density
- 0.377 g/cm³
- Equilibrium temperature
- 2,085 K
- Starlight received
- 3,152 × Earth
- Orbital period
- 2.872 days
- Average distance from its star
- 0.0455 AU
Star
- Host star
- KELT-18
- Spectral class
- F — yellow-white
- Surface temperature
- 6,670 K
- Radius
- 1.908 × Sun
- Mass
- 1.524 × Sun
- Age
- 1.9 billion years
System
- Distance from Earth
- 1,048 light-years (321.4 parsecs)
- Stars in system
- 2
- Known planets
- 1
Discovery
- Year
- 2017
- Method
- Transit
- Facility
- KELT-North
Data from the NASA Exoplanet Archive, synced October 14, 2026.