NGTS-10 b
NGTS-10 b is a hot Jupiter orbiting the K star NGTS-10 in the constellation Lepus. It lies about 1,059 light-years from Earth and was discovered in 2020 using the transit method.
How Big Is NGTS-10 b?
NGTS-10 b has a radius of 13.90 times that of Earth, or 1.24 times the radius of Jupiter.
Is NGTS-10 b in the Habitable Zone?
The position of NGTS-10 b relative to the habitable zone of NGTS-10 cannot be precisely determined from the available orbital data.
Habitable zone of NGTS-10: 0.349–0.859 AU (conservative: 0.442–0.815 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
Temperature on NGTS-10 b
The equilibrium temperature of NGTS-10 b is about 1,508 K (1,235 °C) — hot enough to melt many metals. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C.
Orbit and Year Length
A year on NGTS-10 b — one full orbit around NGTS-10 — lasts just 18.4 hours, shorter than Mercury's 88-day year.
How Was NGTS-10 b Discovered?
NGTS-10 b was discovered in 2020 using the transit method, with observations from Next-Generation Transit Survey (NGTS).
The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.
How Far Away Is NGTS-10 b?
NGTS-10 b is 1,059.0 light-years (324.7 parsecs) from Earth. Light arriving here tonight left the planet about 1,059 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 18,638,400 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. NGTS-10 b scores 0.07, ranking #4,981 of 5,565 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: NGTS-10
NGTS-10 b belongs to a system of 2 stars; it orbits NGTS-10.
NGTS-10
- Spectral type
- K
- Surface temperature
- 4,567 K (Sun: 5,772 K)
- Radius
- 0.70 R☉
Planetary System
NGTS-10 b is the only planet known to orbit NGTS-10 so far.
NGTS-10 b — Complete Data
| Radius | 13.899 Earth radii (1.240 Jupiter radii) |
|---|---|
| Orbital period | 0.77 days |
| Equilibrium temperature | 1,508 K (1,235 °C) |
| Earth Similarity Index | 0.07 |
| Distance from Earth | 1,059.0 light-years (324.7 parsecs) |
| Constellation | Lepus |
| Discovery method | Transit |
| Discovery facility | Next-Generation Transit Survey (NGTS) |
| Discovery year | 2020 |
Data: NASA Exoplanet Archive, last updated 2026-08-20. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About NGTS-10 b
Is NGTS-10 b habitable?
NGTS-10 b is not known to orbit within the habitable zone of NGTS-10, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is NGTS-10 b?
NGTS-10 b is about 1,059 light-years from Earth in the constellation Lepus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 18,638,400 years to get there.
How big is NGTS-10 b compared to Earth?
NGTS-10 b has 13.90 times the radius of Earth.
How long is a year on NGTS-10 b?
One orbit around NGTS-10 takes 0.8 Earth days — short enough that 476 of its years would fit into one Earth year.
Explore NGTS-10 b in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
