TOI-1011 b
TOI-1011 b is a super-Earth orbiting TOI-1011 in the constellation Puppis. It lies about 172 light-years from Earth and was discovered in 2025 using the transit method.
How Big Is TOI-1011 b?
TOI-1011 b has a radius of 1.45 times that of Earth. Its mass is 4.0 times that of Earth.
Is TOI-1011 b in the Habitable Zone?
The position of TOI-1011 b relative to the habitable zone of TOI-1011 cannot be precisely determined from the available orbital data.
Habitable zone of TOI-1011: 0.639–1.519 AU (conservative: 0.810–1.440 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-1011 b — one full orbit around TOI-1011 — lasts 2.47 Earth days, shorter than Mercury's 88-day year.
How Was TOI-1011 b Discovered?
TOI-1011 b was discovered in 2025 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-1011 b?
TOI-1011 b is 171.6 light-years (52.6 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 3,020,160 years to make the journey.
The Host Star: TOI-1011
TOI-1011
- Surface temperature
- 5,475 K (Sun: 5,772 K)
- Mass
- 0.91 M☉
- Radius
- 0.92 R☉
- Luminosity
- 0.7000 L☉
Planetary System
TOI-1011 b is the only planet known to orbit TOI-1011 so far.
TOI-1011 b — Complete Data
| Radius | 1.450 Earth radii (0.129 Jupiter radii) |
|---|---|
| Mass | 4.04 Earth masses (0.013 Jupiter masses) |
| Orbital period | 2.47 days |
| Distance from Earth | 171.6 light-years (52.6 parsecs) |
| Constellation | Puppis |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-08-07. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-1011 b
Is TOI-1011 b habitable?
TOI-1011 b is not known to orbit within the habitable zone of TOI-1011, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is TOI-1011 b?
TOI-1011 b is about 172 light-years from Earth in the constellation Puppis. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 3,020,160 years to get there.
How big is TOI-1011 b compared to Earth?
TOI-1011 b has 1.45 times the radius of Earth and about 4.0 times its mass.
How long is a year on TOI-1011 b?
One orbit around TOI-1011 takes 2.5 Earth days — short enough that 148 of its years would fit into one Earth year.
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