TOI-150.01
TOI-150.01 is a hot Jupiter orbiting the F star TOI-150 in the constellation Volans. It lies about 1,097 light-years from Earth and was discovered in 2019 using the transit method.
How Big Is TOI-150.01?
TOI-150.01 has a radius of 14.07 times that of Earth, or 1.25 times the radius of Jupiter. Its mass is 798 times that of Earth, giving it a density of 1.68 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is TOI-150.01 in the Habitable Zone?
TOI-150.01 orbits inside the inner edge of the habitable zone of TOI-150. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-150: 1.291–3.009 AU (conservative: 1.635–2.853 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-150.01
The equilibrium temperature of TOI-150.01 is about 1,405 K (1,131 °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.
Orbit and Year Length
A year on TOI-150.01 — one full orbit around TOI-150 — lasts 5.86 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.070 AU — closer to its star than Mercury is to the Sun. Its orbit is mildly elliptical (eccentricity 0.26).
How Was TOI-150.01 Discovered?
TOI-150.01 was discovered in 2019 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-150.01?
TOI-150.01 is 1,096.8 light-years (336.3 parsecs) from Earth. Light arriving here tonight left the planet about 1,097 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 19,303,680 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. TOI-150.01 scores 0.07, ranking #5,045 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: TOI-150
TOI-150
- Spectral type
- F
- Surface temperature
- 6,255 K (Sun: 5,772 K)
- Mass
- 1.35 M☉
- Radius
- 1.53 R☉
- Luminosity
- 3.1370 L☉
- Age
- 2.3 billion years (Sun: 4.6)
Planetary System
TOI-150.01 is the only planet known to orbit TOI-150 so far.
TOI-150.01 — Complete Data
| Radius | 14.067 Earth radii (1.255 Jupiter radii) |
|---|---|
| Mass | 797.75 Earth masses (2.510 Jupiter masses) |
| Density | 1.68 g/cm³ (Earth: 5.51) |
| Orbital period | 5.86 days |
| Orbital distance | 0.070 AU |
| Eccentricity | 0.262 |
| Equilibrium temperature | 1,405 K (1,131 °C) |
| Earth Similarity Index | 0.07 |
| Distance from Earth | 1,096.8 light-years (336.3 parsecs) |
| Constellation | Volans |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2019 |
Data: NASA Exoplanet Archive, last updated 2019-11-01. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-150.01
Is TOI-150.01 habitable?
No — TOI-150.01 orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-150.01?
TOI-150.01 is about 1,097 light-years from Earth in the constellation Volans. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 19,303,680 years to get there.
How big is TOI-150.01 compared to Earth?
TOI-150.01 has 14.07 times the radius of Earth and about 798 times its mass.
How long is a year on TOI-150.01?
One orbit around TOI-150 takes 5.9 Earth days — short enough that 62 of its years would fit into one Earth year.
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