NGTS-32 b
NGTS-32 b is a hot Jupiter orbiting NGTS-32 in the constellation Libra. It lies about 2,731 light-years from Earth and was discovered in 2025 using the transit method.
How Big Is NGTS-32 b?
NGTS-32 b has a radius of 15.92 times that of Earth, or 1.42 times the radius of Jupiter. Its mass is 181 times that of Earth, giving it a density of 0.24 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is NGTS-32 b in the Habitable Zone?
NGTS-32 b orbits inside the inner edge of the habitable zone of NGTS-32. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of NGTS-32: 1.350–3.188 AU (conservative: 1.709–3.023 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-32 b
The equilibrium temperature of NGTS-32 b is about 1,750 K (1,477 °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. It receives 1,554 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on NGTS-32 b — one full orbit around NGTS-32 — lasts 3.31 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.044 AU — closer to its star than Mercury is to the Sun.
How Was NGTS-32 b Discovered?
NGTS-32 b was discovered in 2025 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-32 b?
NGTS-32 b is 2,731.4 light-years (837.5 parsecs) from Earth. Light arriving here tonight left the planet about 2,731 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 48,072,640 years to make the journey.
The Host Star: NGTS-32
NGTS-32
- Surface temperature
- 5,680 K (Sun: 5,772 K)
- Mass
- 1.07 M☉
- Radius
- 1.85 R☉
- Age
- 8.0 billion years (Sun: 4.6)
Planetary System
NGTS-32 b is the only planet known to orbit NGTS-32 so far.
NGTS-32 b — Complete Data
| Radius | 15.917 Earth radii (1.420 Jupiter radii) |
|---|---|
| Mass | 181.16 Earth masses (0.570 Jupiter masses) |
| Density | 0.24 g/cm³ (Earth: 5.51) |
| Orbital period | 3.31 days |
| Orbital distance | 0.044 AU |
| Equilibrium temperature | 1,750 K (1,477 °C) |
| Stellar irradiation | 1,554.00× Earth |
| Distance from Earth | 2,731.4 light-years (837.5 parsecs) |
| Constellation | Libra |
| Discovery method | Transit |
| Discovery facility | Next-Generation Transit Survey (NGTS) |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-10-09. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About NGTS-32 b
Is NGTS-32 b habitable?
No — NGTS-32 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is NGTS-32 b?
NGTS-32 b is about 2,731 light-years from Earth in the constellation Libra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 48,072,640 years to get there.
How big is NGTS-32 b compared to Earth?
NGTS-32 b has 15.92 times the radius of Earth and about 181 times its mass.
How long is a year on NGTS-32 b?
One orbit around NGTS-32 takes 3.3 Earth days — short enough that 110 of its years would fit into one Earth year.
Explore NGTS-32 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.
