TOI-3053 b
TOI-3053 b is a hot Jupiter orbiting the G8-K0 V star TOI-3053 in the constellation Carina. It lies about 1,101 light-years from Earth and was discovered in 2026 using the transit method.
How Big Is TOI-3053 b?
TOI-3053 b has a radius of 13.56 times that of Earth, or 1.21 times the radius of Jupiter. Its mass is 270 times that of Earth, giving it a density of 0.64 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is TOI-3053 b in the Habitable Zone?
TOI-3053 b orbits inside the inner edge of the habitable zone of TOI-3053. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-3053: 0.645–1.539 AU (conservative: 0.818–1.459 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on TOI-3053 b
The equilibrium temperature of TOI-3053 b is about 1,290 K (1,017 °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 460 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on TOI-3053 b — one full orbit around TOI-3053 — lasts 2.99 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.039 AU — closer to its star than Mercury is to the Sun.
How Was TOI-3053 b Discovered?
TOI-3053 b was discovered in 2026 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-3053 b?
TOI-3053 b is 1,101.2 light-years (337.6 parsecs) from Earth. Light arriving here tonight left the planet about 1,101 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 19,381,120 years to make the journey.
The Host Star: TOI-3053
TOI-3053
- Spectral type
- G8-K0 V
- Surface temperature
- 5,378 K (Sun: 5,772 K)
- Mass
- 0.96 M☉
- Radius
- 0.97 R☉
- Age
- 7.8 billion years (Sun: 4.6)
Planetary System
TOI-3053 b is the only planet known to orbit TOI-3053 so far.
TOI-3053 b — Complete Data
| Radius | 13.563 Earth radii (1.210 Jupiter radii) |
|---|---|
| Mass | 270.15 Earth masses (0.850 Jupiter masses) |
| Density | 0.64 g/cm³ (Earth: 5.51) |
| Orbital period | 2.99 days |
| Orbital distance | 0.039 AU |
| Equilibrium temperature | 1,290 K (1,017 °C) |
| Stellar irradiation | 460.00× Earth |
| Distance from Earth | 1,101.2 light-years (337.6 parsecs) |
| Constellation | Carina |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2026 |
Data: NASA Exoplanet Archive, last updated 2026-09-03. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-3053 b
Is TOI-3053 b habitable?
No — TOI-3053 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-3053 b?
TOI-3053 b is about 1,101 light-years from Earth in the constellation Carina. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 19,381,120 years to get there.
How big is TOI-3053 b compared to Earth?
TOI-3053 b has 13.56 times the radius of Earth and about 270 times its mass.
How long is a year on TOI-3053 b?
One orbit around TOI-3053 takes 3.0 Earth days — short enough that 122 of its years would fit into one Earth year.
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