NGTS-9 b
A confirmed exoplanet orbiting NGTS-9.
Compared with Earth
- Size
- About 12 times Earth's width.
- Mass
- About 922 times Earth's mass.
- Temperature
- About 1,175 °C (2,147 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 729 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 4.4 Earth days.
Planet
- Radius
- 11.99 × Earth
- Mass
- 921.7 × Earth
- Density
- 2.93 g/cm³
- Equilibrium temperature
- 1,448 K
- Starlight received
- 729 × Earth
- Orbital period
- 4.435 days
- Average distance from its star
- 0.058 AU
Star
- Host star
- NGTS-9
- Spectral class
- F — yellow-white
- Surface temperature
- 6,330 K
- Radius
- 1.38 × Sun
- Mass
- 1.34 × Sun
- Age
- 0.96 billion years
System
- Distance from Earth
- 1,987 light-years (609.1 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2019
- Method
- Transit
- Facility
- Next-Generation Transit Survey (NGTS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.