TOI-5726.01
TOI-5726.01 is a mini-Neptune orbiting TOI-5726 in the constellation Ursa Major. It lies about 355 light-years from Earth and was discovered in 2024 using the transit method.
How Big Is TOI-5726.01?
TOI-5726.01 has a radius of 2.55 times that of Earth.
Is TOI-5726.01 in the Habitable Zone?
TOI-5726.01 orbits inside the inner edge of the habitable zone of TOI-5726. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-5726: 0.853–2.004 AU (conservative: 1.080–1.900 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-5726.01
TOI-5726.01 receives 339 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on TOI-5726.01 — one full orbit around TOI-5726 — lasts 5.49 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.062 AU — closer to its star than Mercury is to the Sun.
How Was TOI-5726.01 Discovered?
TOI-5726.01 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-5726.01?
TOI-5726.01 is 355.0 light-years (108.8 parsecs) from Earth. Light arriving here tonight left the planet around the year 1671. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 6,248,000 years to make the journey.
The Host Star: TOI-5726
TOI-5726
- Surface temperature
- 5,874 K (Sun: 5,772 K)
- Mass
- 1.06 M☉
- Radius
- 1.11 R☉
Planetary System
TOI-5726.01 is the only planet known to orbit TOI-5726 so far.
TOI-5726.01 — Complete Data
| Radius | 2.554 Earth radii (0.228 Jupiter radii) |
|---|---|
| Orbital period | 5.49 days |
| Orbital distance | 0.062 AU |
| Stellar irradiation | 338.95× Earth |
| Distance from Earth | 355.0 light-years (108.8 parsecs) |
| Constellation | Ursa Major |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2024-12-10. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-5726.01
Is TOI-5726.01 habitable?
No — TOI-5726.01 orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-5726.01?
TOI-5726.01 is about 355 light-years from Earth in the constellation Ursa Major. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 6,248,000 years to get there.
How big is TOI-5726.01 compared to Earth?
TOI-5726.01 has 2.55 times the radius of Earth.
How long is a year on TOI-5726.01?
One orbit around TOI-5726 takes 5.5 Earth days — short enough that 67 of its years would fit into one Earth year.
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