TOI-480 b
TOI-480 b is a super-Earth orbiting TOI-480 in the constellation Lepus. It lies about 178 light-years from Earth and was discovered in 2024 using the transit method.
How Big Is TOI-480 b?
TOI-480 b has a radius of 2.85 times that of Earth. Its mass is 20.8 times that of Earth, giving it a density of 4.91 g/cm³ — comparable to rocky planets like Earth (5.51 g/cm³).
Is TOI-480 b in the Habitable Zone?
TOI-480 b orbits inside the inner edge of the habitable zone of TOI-480. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-480: 1.247–2.911 AU (conservative: 1.579–2.760 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-480 b
The equilibrium temperature of TOI-480 b is about 1,199 K (926 °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 TOI-480 b — one full orbit around TOI-480 — lasts 6.87 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.077 AU — closer to its star than Mercury is to the Sun.
How Was TOI-480 b Discovered?
TOI-480 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-480 b?
TOI-480 b is 177.9 light-years (54.5 parsecs) from Earth. Light arriving here tonight left the planet around the year 1849. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 3,131,040 years to make the journey.
The Host Star: TOI-480
TOI-480
- Surface temperature
- 6,174 K (Sun: 5,772 K)
- Mass
- 1.28 M☉
- Radius
- 1.49 R☉
- Luminosity
- 2.8970 L☉
- Age
- 2.7 billion years (Sun: 4.6)
Planetary System
TOI-480 b is the only planet known to orbit TOI-480 so far.
TOI-480 b — Complete Data
| Radius | 2.854 Earth radii (0.255 Jupiter radii) |
|---|---|
| Mass | 20.80 Earth masses (0.065 Jupiter masses) |
| Density | 4.91 g/cm³ (Earth: 5.51) |
| Orbital period | 6.87 days |
| Orbital distance | 0.077 AU |
| Equilibrium temperature | 1,199 K (926 °C) |
| Distance from Earth | 177.9 light-years (54.5 parsecs) |
| Constellation | Lepus |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2024-07-22. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-480 b
Is TOI-480 b habitable?
No — TOI-480 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-480 b?
TOI-480 b is about 178 light-years from Earth in the constellation Lepus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 3,131,040 years to get there.
How big is TOI-480 b compared to Earth?
TOI-480 b has 2.85 times the radius of Earth and about 20.8 times its mass.
How long is a year on TOI-480 b?
One orbit around TOI-480 takes 6.9 Earth days — short enough that 53 of its years would fit into one Earth year.
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