TOI-1232 b
TOI-1232 b is a cold gas giant orbiting the G1 V star TOI-1232 in the constellation Carina. It lies about 1,072 light-years from Earth and was discovered in 2026 using the transit method.
How Big Is TOI-1232 b?
TOI-1232 b has a radius of 10.93 times that of Earth, or 0.98 times the radius of Jupiter. Its mass is 221 times that of Earth, giving it a density of 0.93 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is TOI-1232 b in the Habitable Zone?
TOI-1232 b orbits inside the inner edge of the habitable zone of TOI-1232. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-1232: 0.814–1.916 AU (conservative: 1.031–1.816 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 ›
Orbit and Year Length
A year on TOI-1232 b — one full orbit around TOI-1232 — lasts 14.3 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.117 AU — closer to its star than Mercury is to the Sun. Its orbit is mildly elliptical (eccentricity 0.07).
How Was TOI-1232 b Discovered?
TOI-1232 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-1232 b?
TOI-1232 b is 1,071.8 light-years (328.6 parsecs) from Earth. Light arriving here tonight left the planet about 1,072 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 18,863,680 years to make the journey.
The Host Star: TOI-1232
TOI-1232
- Spectral type
- G1 V
- Surface temperature
- 5,823 K (Sun: 5,772 K)
- Mass
- 1.06 M☉
- Radius
- 1.07 R☉
- Luminosity
- 1.1830 L☉
- Age
- 4.0 billion years (Sun: 4.6)
The TOI-1232 Planetary System
TOI-1232 b is one of 2 known planets in the TOI-1232 system. Its siblings:
- TOI-1232 c (Cold Gas Giant)
TOI-1232 b — Complete Data
| Radius | 10.929 Earth radii (0.975 Jupiter radii) |
|---|---|
| Mass | 220.57 Earth masses (0.694 Jupiter masses) |
| Density | 0.93 g/cm³ (Earth: 5.51) |
| Orbital period | 14.26 days |
| Orbital distance | 0.117 AU |
| Eccentricity | 0.065 |
| Distance from Earth | 1,071.8 light-years (328.6 parsecs) |
| Constellation | Carina |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2026 |
Data: NASA Exoplanet Archive, last updated 2026-04-09. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-1232 b
Is TOI-1232 b habitable?
No — TOI-1232 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-1232 b?
TOI-1232 b is about 1,072 light-years from Earth in the constellation Carina. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 18,863,680 years to get there.
How big is TOI-1232 b compared to Earth?
TOI-1232 b has 10.93 times the radius of Earth and about 221 times its mass.
How long is a year on TOI-1232 b?
One orbit around TOI-1232 takes 14.3 Earth days — short enough that 26 of its years would fit into one Earth year.
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