TOI-1180 b
TOI-1180 b is a sub-Neptune orbiting TOI-1180 in the constellation Camelopardalis. It lies about 235 light-years from Earth and was discovered in 2024 using the transit method.
How Big Is TOI-1180 b?
TOI-1180 b has a radius of 3.07 times that of Earth.
Is TOI-1180 b in the Habitable Zone?
TOI-1180 b orbits inside the inner edge of the habitable zone of TOI-1180. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-1180: 0.389–0.951 AU (conservative: 0.493–0.901 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 TOI-1180 b
TOI-1180 b receives 36.97 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on TOI-1180 b — one full orbit around TOI-1180 — lasts 9.69 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.081 AU — closer to its star than Mercury is to the Sun.
How Was TOI-1180 b Discovered?
TOI-1180 b was discovered in 2024 using the transit method, with observations from Transiting Exoplanet Survey Satellite (TESS).
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 TOI-1180 b?
TOI-1180 b is 234.9 light-years (72.0 parsecs) from Earth. Light arriving here tonight left the planet around the year 1792. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 4,134,240 years to make the journey.
The Host Star: TOI-1180
TOI-1180
- Surface temperature
- 4,738 K (Sun: 5,772 K)
- Mass
- 0.75 M☉
- Radius
- 0.73 R☉
Planetary System
TOI-1180 b is the only planet known to orbit TOI-1180 so far.
TOI-1180 b — Complete Data
| Radius | 3.072 Earth radii (0.274 Jupiter radii) |
|---|---|
| Orbital period | 9.69 days |
| Orbital distance | 0.081 AU |
| Stellar irradiation | 36.97× Earth |
| Distance from Earth | 234.9 light-years (72.0 parsecs) |
| Constellation | Camelopardalis |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2024-12-10. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-1180 b
Is TOI-1180 b habitable?
No — TOI-1180 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-1180 b?
TOI-1180 b is about 235 light-years from Earth in the constellation Camelopardalis. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 4,134,240 years to get there.
How big is TOI-1180 b compared to Earth?
TOI-1180 b has 3.07 times the radius of Earth.
How long is a year on TOI-1180 b?
One orbit around TOI-1180 takes 9.7 Earth days — short enough that 38 of its years would fit into one Earth year.
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