TOI-782 b
TOI-782 b is a super-Earth orbiting TOI-782 in the constellation Corvus. It lies about 171 light-years from Earth and was discovered in 2024 using the transit method.
How Big Is TOI-782 b?
TOI-782 b has a radius of 2.73 times that of Earth. Its mass is 19.1 times that of Earth.
Is TOI-782 b in the Habitable Zone?
TOI-782 b orbits inside the inner edge of the habitable zone of TOI-782. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-782: 0.115–0.301 AU (conservative: 0.146–0.286 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on TOI-782 b
The equilibrium temperature of TOI-782 b is about 435 K (162 °C) — hotter than anywhere on Earth. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C. It receives 5.91 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on TOI-782 b — one full orbit around TOI-782 — lasts 8.02 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.058 AU — closer to its star than Mercury is to the Sun. Its orbit is mildly elliptical (eccentricity 0.19).
How Was TOI-782 b Discovered?
TOI-782 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-782 b?
TOI-782 b is 171.3 light-years (52.5 parsecs) from Earth. Light arriving here tonight left the planet around the year 1855. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 3,014,880 years to make the journey.
The Host Star: TOI-782
TOI-782
- Surface temperature
- 3,370 K (Sun: 5,772 K)
- Mass
- 0.40 M☉
- Radius
- 0.41 R☉
- Luminosity
- 0.0198 L☉
Planetary System
TOI-782 b is the only planet known to orbit TOI-782 so far.
TOI-782 b — Complete Data
| Radius | 2.734 Earth radii (0.244 Jupiter radii) |
|---|---|
| Mass | 19.10 Earth masses (0.060 Jupiter masses) |
| Orbital period | 8.02 days |
| Orbital distance | 0.058 AU |
| Eccentricity | 0.190 |
| Equilibrium temperature | 435 K (162 °C) |
| Stellar irradiation | 5.91× Earth |
| Distance from Earth | 171.3 light-years (52.5 parsecs) |
| Constellation | Corvus |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2025-12-18. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-782 b
Is TOI-782 b habitable?
No — TOI-782 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-782 b?
TOI-782 b is about 171 light-years from Earth in the constellation Corvus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 3,014,880 years to get there.
How big is TOI-782 b compared to Earth?
TOI-782 b has 2.73 times the radius of Earth and about 19.1 times its mass.
How long is a year on TOI-782 b?
One orbit around TOI-782 takes 8.0 Earth days — short enough that 46 of its years would fit into one Earth year.
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