KELT-4 A b
A confirmed exoplanet orbiting KELT-4 A.
Compared with Earth
- Size
- About 19 times Earth's width.
- Mass
- About 287 times Earth's mass.
- Temperature
- About 1,550 °C (2,822 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 1,840 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 3 Earth days.
Planet
- Radius
- 19.04 × Earth
- Mass
- 286.7 × Earth
- Density
- 0.228 g/cm³
- Equilibrium temperature
- 1,823 K
- Starlight received
- 1,840 × Earth
- Orbital period
- 2.99 days
- Average distance from its star
- 0.04317 AU
Star
- Host star
- KELT-4 A
- Spectral class
- F — yellow-white
- Surface temperature
- 6,206 K
- Radius
- 1.603 × Sun
- Mass
- 1.201 × Sun
- Age
- 4.44 billion years
System
- Distance from Earth
- 711.2 light-years (218.1 parsecs)
- Stars in system
- 3
- Known planets
- 1
Discovery
- Year
- 2016
- Method
- Transit
- Facility
- KELT
Data from the NASA Exoplanet Archive, synced October 14, 2026.