TOI-4307 b
TOI-4307 b is a super-Earth orbiting TOI-4307 in the constellation Mensa. It lies about 118 light-years from Earth and was discovered in 2026 using the transit method.
How Big Is TOI-4307 b?
TOI-4307 b has a radius of 1.39 times that of Earth.
Is TOI-4307 b in the Habitable Zone?
The position of TOI-4307 b relative to the habitable zone of TOI-4307 cannot be precisely determined from the available orbital data.
Habitable zone of TOI-4307: 0.898–2.100 AU (conservative: 1.137–1.991 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 ›
Orbit and Year Length
A year on TOI-4307 b — one full orbit around TOI-4307 — lasts 32.7 Earth days, shorter than Mercury's 88-day year.
How Was TOI-4307 b Discovered?
TOI-4307 b was discovered in 2026 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-4307 b?
TOI-4307 b is 117.6 light-years (36.0 parsecs) from Earth. Light arriving here tonight left the planet around the year 1909. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 2,069,760 years to make the journey.
The Host Star: TOI-4307
TOI-4307
- Surface temperature
- 6,079 K (Sun: 5,772 K)
- Mass
- 1.14 M☉
- Radius
- 1.10 R☉
- Luminosity
- 1.4846 L☉
Planetary System
TOI-4307 b is the only planet known to orbit TOI-4307 so far.
TOI-4307 b — Complete Data
| Radius | 1.390 Earth radii (0.124 Jupiter radii) |
|---|---|
| Orbital period | 32.70 days |
| Distance from Earth | 117.6 light-years (36.0 parsecs) |
| Constellation | Mensa |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2026 |
Data: NASA Exoplanet Archive, last updated 2026-10-08. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-4307 b
Is TOI-4307 b habitable?
TOI-4307 b is not known to orbit within the habitable zone of TOI-4307, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is TOI-4307 b?
TOI-4307 b is about 118 light-years from Earth in the constellation Mensa. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 2,069,760 years to get there.
How big is TOI-4307 b compared to Earth?
TOI-4307 b has 1.39 times the radius of Earth.
How long is a year on TOI-4307 b?
One orbit around TOI-4307 takes 32.7 Earth days — short enough that 11 of its years would fit into one Earth year.
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