TOI-1054.01
TOI-1054.01 is a mini-Neptune orbiting TOI-1054 in the constellation Telescopium. It lies about 288 light-years from Earth and was discovered in 2021 using the transit method.
How Big Is TOI-1054.01?
TOI-1054.01 has a radius of 2.43 times that of Earth.
Is TOI-1054.01 in the Habitable Zone?
The position of TOI-1054.01 relative to the habitable zone of TOI-1054 cannot be precisely determined from the available orbital data.
Habitable zone of TOI-1054: 0.965–2.256 AU (conservative: 1.223–2.139 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-1054.01
The equilibrium temperature of TOI-1054.01 is about 853 K (580 °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. It receives 88.07 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on TOI-1054.01 — one full orbit around TOI-1054 — lasts 15.5 Earth days, shorter than Mercury's 88-day year.
How Was TOI-1054.01 Discovered?
TOI-1054.01 was discovered in 2021 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-1054.01?
TOI-1054.01 is 288.4 light-years (88.4 parsecs) from Earth. Light arriving here tonight left the planet around the year 1738. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 5,075,840 years to make the journey.
The Host Star: TOI-1054
TOI-1054
- Surface temperature
- 6,122 K (Sun: 5,772 K)
- Radius
- 1.17 R☉
Planetary System
TOI-1054.01 is the only planet known to orbit TOI-1054 so far.
TOI-1054.01 — Complete Data
| Radius | 2.434 Earth radii (0.217 Jupiter radii) |
|---|---|
| Orbital period | 15.51 days |
| Equilibrium temperature | 853 K (580 °C) |
| Stellar irradiation | 88.07× Earth |
| Distance from Earth | 288.4 light-years (88.4 parsecs) |
| Constellation | Telescopium |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2021 |
Data: NASA Exoplanet Archive, last updated 2023-09-19. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-1054.01
Is TOI-1054.01 habitable?
TOI-1054.01 is not known to orbit within the habitable zone of TOI-1054, and as a mini-Neptune it is an unlikely candidate for life as we know it.
How far away is TOI-1054.01?
TOI-1054.01 is about 288 light-years from Earth in the constellation Telescopium. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 5,075,840 years to get there.
How big is TOI-1054.01 compared to Earth?
TOI-1054.01 has 2.43 times the radius of Earth.
How long is a year on TOI-1054.01?
One orbit around TOI-1054 takes 15.5 Earth days — short enough that 24 of its years would fit into one Earth year.
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