TOI-5616 b
TOI-5616 b is a hot Jupiter orbiting TOI-5616 in the constellation Canes Venatici. It lies about 1,273 light-years from Earth and was discovered in 2024 using the transit method.
How Big Is TOI-5616 b?
TOI-5616 b has a radius of 10.78 times that of Earth, or 0.96 times the radius of Jupiter. Its mass is 624 times that of Earth.
Is TOI-5616 b in the Habitable Zone?
TOI-5616 b orbits inside the inner edge of the habitable zone of TOI-5616. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-5616: 0.259–0.655 AU (conservative: 0.328–0.621 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on TOI-5616 b
The equilibrium temperature of TOI-5616 b is about 939 K (666 °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 137 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on TOI-5616 b — one full orbit around TOI-5616 — lasts 2.00 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.027 AU — closer to its star than Mercury is to the Sun.
How Was TOI-5616 b Discovered?
TOI-5616 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-5616 b?
TOI-5616 b is 1,273.4 light-years (390.4 parsecs) from Earth. Light arriving here tonight left the planet about 1,273 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 22,411,840 years to make the journey.
The Host Star: TOI-5616
TOI-5616
- Surface temperature
- 3,996 K (Sun: 5,772 K)
- Mass
- 0.67 M☉
- Radius
- 0.65 R☉
- Luminosity
- 0.1017 L☉
- Age
- 7.2 billion years (Sun: 4.6)
Planetary System
TOI-5616 b is the only planet known to orbit TOI-5616 so far.
TOI-5616 b — Complete Data
| Radius | 10.780 Earth radii (0.961 Jupiter radii) |
|---|---|
| Mass | 624.00 Earth masses (1.963 Jupiter masses) |
| Orbital period | 2.00 days |
| Orbital distance | 0.027 AU |
| Equilibrium temperature | 939 K (666 °C) |
| Stellar irradiation | 137.00× Earth |
| Distance from Earth | 1,273.4 light-years (390.4 parsecs) |
| Constellation | Canes Venatici |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2024-08-30. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-5616 b
Is TOI-5616 b habitable?
No — TOI-5616 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-5616 b?
TOI-5616 b is about 1,273 light-years from Earth in the constellation Canes Venatici. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 22,411,840 years to get there.
How big is TOI-5616 b compared to Earth?
TOI-5616 b has 10.78 times the radius of Earth and about 624 times its mass.
How long is a year on TOI-5616 b?
One orbit around TOI-5616 takes 2.0 Earth days — short enough that 182 of its years would fit into one Earth year.
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