TOI-2368 b
TOI-2368 b is a hot Jupiter orbiting TOI-2368 in the constellation Vela. It lies about 688 light-years from Earth and was discovered in 2024 using the transit method.
How Big Is TOI-2368 b?
TOI-2368 b has a radius of 10.84 times that of Earth, or 0.97 times the radius of Jupiter. Its mass is 207 times that of Earth, giving it a density of 0.88 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is TOI-2368 b in the Habitable Zone?
TOI-2368 b orbits inside the inner edge of the habitable zone of TOI-2368. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-2368: 0.560–1.337 AU (conservative: 0.710–1.267 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on TOI-2368 b
The equilibrium temperature of TOI-2368 b is about 1,000 K (727 °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-2368 b — one full orbit around TOI-2368 — lasts 5.18 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.056 AU — closer to its star than Mercury is to the Sun. Its orbit is mildly elliptical (eccentricity 0.06).
How Was TOI-2368 b Discovered?
TOI-2368 b 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-2368 b?
TOI-2368 b is 687.9 light-years (210.9 parsecs) from Earth. Light arriving here tonight left the planet around the year 1339. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 12,107,040 years to make the journey.
The Host Star: TOI-2368
TOI-2368
- Surface temperature
- 5,360 K (Sun: 5,772 K)
- Mass
- 0.90 M☉
- Radius
- 0.85 R☉
- Luminosity
- 0.5310 L☉
- Age
- 4.2 billion years (Sun: 4.6)
Planetary System
TOI-2368 b is the only planet known to orbit TOI-2368 so far.
TOI-2368 b — Complete Data
| Radius | 10.839 Earth radii (0.967 Jupiter radii) |
|---|---|
| Mass | 206.59 Earth masses (0.650 Jupiter masses) |
| Density | 0.88 g/cm³ (Earth: 5.51) |
| Orbital period | 5.18 days |
| Orbital distance | 0.056 AU |
| Eccentricity | 0.061 |
| Equilibrium temperature | 1,000 K (727 °C) |
| Distance from Earth | 687.9 light-years (210.9 parsecs) |
| Constellation | Vela |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2024-07-23. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-2368 b
Is TOI-2368 b habitable?
No — TOI-2368 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-2368 b?
TOI-2368 b is about 688 light-years from Earth in the constellation Vela. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 12,107,040 years to get there.
How big is TOI-2368 b compared to Earth?
TOI-2368 b has 10.84 times the radius of Earth and about 207 times its mass.
How long is a year on TOI-2368 b?
One orbit around TOI-2368 takes 5.2 Earth days — short enough that 71 of its years would fit into one Earth year.
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