NGTS-21 b
A confirmed exoplanet orbiting NGTS-21.
Compared with Earth
- Size
- About 15 times Earth's width.
- Mass
- About 750 times Earth's mass.
- Temperature
- About 1,084 °C (1,983 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 1.5 Earth days.
Planet
- Radius
- 14.91 × Earth
- Mass
- 750.1 × Earth
- Density
- 1.25 g/cm³
- Equilibrium temperature
- 1,357 K
- Starlight received
- Unknown
- Orbital period
- 1.543 days
- Average distance from its star
- 0.0236 AU
Star
- Host star
- NGTS-21
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,660 K
- Radius
- 0.86 × Sun
- Mass
- 0.72 × Sun
- Age
- 10.02 billion years
System
- Distance from Earth
- 1,934 light-years (592.9 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2022
- Method
- Transit
- Facility
- Next-Generation Transit Survey (NGTS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.