TOI-1226 b
TOI-1226 b is a mini-Neptune orbiting TOI-1226 in the constellation Volans. It lies about 841 light-years from Earth and was discovered in 2026 using the transit method.
How Big Is TOI-1226 b?
TOI-1226 b has a radius of 2.41 times that of Earth.
Is TOI-1226 b in the Habitable Zone?
The position of TOI-1226 b relative to the habitable zone of TOI-1226 cannot be precisely determined from the available orbital data.
Habitable zone of TOI-1226: 0.669–1.591 AU (conservative: 0.847–1.509 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-1226 b — one full orbit around TOI-1226 — lasts 3.93 Earth days, shorter than Mercury's 88-day year.
How Was TOI-1226 b Discovered?
TOI-1226 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-1226 b?
TOI-1226 b is 841.3 light-years (257.9 parsecs) from Earth. Light arriving here tonight left the planet around the year 1185. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 14,806,880 years to make the journey.
The Host Star: TOI-1226
TOI-1226
- Surface temperature
- 5,435 K (Sun: 5,772 K)
- Radius
- 0.99 R☉
Planetary System
TOI-1226 b is the only planet known to orbit TOI-1226 so far.
TOI-1226 b — Complete Data
| Radius | 2.410 Earth radii (0.215 Jupiter radii) |
|---|---|
| Orbital period | 3.93 days |
| Distance from Earth | 841.3 light-years (257.9 parsecs) |
| Constellation | Volans |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2026 |
Data: NASA Exoplanet Archive, last updated 2026-04-23. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-1226 b
Is TOI-1226 b habitable?
TOI-1226 b is not known to orbit within the habitable zone of TOI-1226, and as a mini-Neptune it is an unlikely candidate for life as we know it.
How far away is TOI-1226 b?
TOI-1226 b is about 841 light-years from Earth in the constellation Volans. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 14,806,880 years to get there.
How big is TOI-1226 b compared to Earth?
TOI-1226 b has 2.41 times the radius of Earth.
How long is a year on TOI-1226 b?
One orbit around TOI-1226 takes 3.9 Earth days — short enough that 93 of its years would fit into one Earth year.
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