TOI-5882 b
TOI-5882 b is a hot Jupiter orbiting TOI-5882 in the constellation Cygnus. It lies about 1,357 light-years from Earth and was discovered in 2025 using the transit method.
How Big Is TOI-5882 b?
TOI-5882 b has a radius of 11.47 times that of Earth, or 1.02 times the radius of Jupiter. Its mass is 6,995 times that of Earth, giving it a density of 25.40 g/cm³ — comparable to rocky planets like Earth (5.51 g/cm³).
Is TOI-5882 b in the Habitable Zone?
TOI-5882 b orbits inside the inner edge of the habitable zone of TOI-5882. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-5882: 1.772–4.159 AU (conservative: 2.244–3.943 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on TOI-5882 b
The equilibrium temperature of TOI-5882 b is about 1,515 K (1,242 °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-5882 b — one full orbit around TOI-5882 — lasts 7.15 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.080 AU — closer to its star than Mercury is to the Sun. Its orbit is nearly circular (eccentricity 0.034).
How Was TOI-5882 b Discovered?
TOI-5882 b was discovered in 2025 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-5882 b?
TOI-5882 b is 1,357.1 light-years (416.1 parsecs) from Earth. Light arriving here tonight left the planet about 1,357 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 23,884,960 years to make the journey.
The Host Star: TOI-5882
TOI-5882
- Surface temperature
- 5,920 K (Sun: 5,772 K)
- Mass
- 1.33 M☉
- Radius
- 2.26 R☉
- Luminosity
- 5.6700 L☉
- Age
- 4.1 billion years (Sun: 4.6)
Planetary System
TOI-5882 b is the only planet known to orbit TOI-5882 so far.
TOI-5882 b — Complete Data
| Radius | 11.467 Earth radii (1.023 Jupiter radii) |
|---|---|
| Mass | 6,995.40 Earth masses (22.010 Jupiter masses) |
| Density | 25.40 g/cm³ (Earth: 5.51) |
| Orbital period | 7.15 days |
| Orbital distance | 0.080 AU |
| Eccentricity | 0.034 |
| Equilibrium temperature | 1,515 K (1,242 °C) |
| Distance from Earth | 1,357.1 light-years (416.1 parsecs) |
| Constellation | Cygnus |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-07-17. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-5882 b
Is TOI-5882 b habitable?
No — TOI-5882 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-5882 b?
TOI-5882 b is about 1,357 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 23,884,960 years to get there.
How big is TOI-5882 b compared to Earth?
TOI-5882 b has 11.47 times the radius of Earth and about 6,995 times its mass.
How long is a year on TOI-5882 b?
One orbit around TOI-5882 takes 7.1 Earth days — short enough that 51 of its years would fit into one Earth year.
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