TOI-1230.01
TOI-1230.01 is a sub-Neptune orbiting TOI-1230 in the constellation Octans. It lies about 467 light-years from Earth and was discovered in 2021 using the transit method.
How Big Is TOI-1230.01?
TOI-1230.01 has a radius of 3.24 times that of Earth.
Is TOI-1230.01 in the Habitable Zone?
The position of TOI-1230.01 relative to the habitable zone of TOI-1230 cannot be precisely determined from the available orbital data.
Habitable zone of TOI-1230: 0.845–1.995 AU (conservative: 1.070–1.891 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-1230.01
The equilibrium temperature of TOI-1230.01 is about 689 K (415 °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 53.14 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on TOI-1230.01 — one full orbit around TOI-1230 — lasts 25.1 Earth days, shorter than Mercury's 88-day year.
How Was TOI-1230.01 Discovered?
TOI-1230.01 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-1230.01?
TOI-1230.01 is 466.9 light-years (143.1 parsecs) from Earth. Light arriving here tonight left the planet around the year 1560. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 8,217,440 years to make the journey.
The Host Star: TOI-1230
TOI-1230
- Surface temperature
- 5,696 K (Sun: 5,772 K)
- Radius
- 1.15 R☉
Planetary System
TOI-1230.01 is the only planet known to orbit TOI-1230 so far.
TOI-1230.01 — Complete Data
| Radius | 3.240 Earth radii (0.289 Jupiter radii) |
|---|---|
| Orbital period | 25.06 days |
| Equilibrium temperature | 689 K (415 °C) |
| Stellar irradiation | 53.14× Earth |
| Distance from Earth | 466.9 light-years (143.1 parsecs) |
| Constellation | Octans |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2021 |
Data: NASA Exoplanet Archive, last updated 2024-02-16. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-1230.01
Is TOI-1230.01 habitable?
TOI-1230.01 is not known to orbit within the habitable zone of TOI-1230, and as a sub-Neptune it is an unlikely candidate for life as we know it.
How far away is TOI-1230.01?
TOI-1230.01 is about 467 light-years from Earth in the constellation Octans. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 8,217,440 years to get there.
How big is TOI-1230.01 compared to Earth?
TOI-1230.01 has 3.24 times the radius of Earth.
How long is a year on TOI-1230.01?
One orbit around TOI-1230 takes 25.1 Earth days — short enough that 15 of its years would fit into one Earth year.
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