TOI-1062 b
TOI-1062 b is a super-Earth orbiting the G9 V star TOI-1062 in the constellation Hydrus. It lies about 268 light-years from Earth and was discovered in 2021 using the transit method.
How Big Is TOI-1062 b?
TOI-1062 b has a radius of 2.27 times that of Earth. Its mass is 10.2 times that of Earth, giving it a density of 4.85 g/cm³ — comparable to rocky planets like Earth (5.51 g/cm³).
Is TOI-1062 b in the Habitable Zone?
TOI-1062 b orbits inside the inner edge of the habitable zone of TOI-1062. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-1062: 0.550–1.314 AU (conservative: 0.697–1.246 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 ›
Temperature on TOI-1062 b
The equilibrium temperature of TOI-1062 b is about 1,077 K (804 °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 232 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on TOI-1062 b — one full orbit around TOI-1062 — lasts 4.11 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.052 AU — closer to its star than Mercury is to the Sun. Its orbit is mildly elliptical (eccentricity 0.18).
How Was TOI-1062 b Discovered?
TOI-1062 b was discovered in 2021 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-1062 b?
TOI-1062 b is 268.0 light-years (82.2 parsecs) from Earth. Light arriving here tonight left the planet around the year 1758. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 4,716,800 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. TOI-1062 b scores 0.25, ranking #3,142 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: TOI-1062
TOI-1062
- Spectral type
- G9 V
- Surface temperature
- 5,328 K (Sun: 5,772 K)
- Mass
- 0.94 M☉
- Radius
- 0.84 R☉
- Age
- 2.5 billion years (Sun: 4.6)
The TOI-1062 Planetary System
TOI-1062 b is one of 2 known planets in the TOI-1062 system. Its siblings:
- TOI-1062 c (Super Earth)
TOI-1062 b — Complete Data
| Radius | 2.265 Earth radii (0.202 Jupiter radii) |
|---|---|
| Mass | 10.15 Earth masses (0.032 Jupiter masses) |
| Density | 4.85 g/cm³ (Earth: 5.51) |
| Orbital period | 4.11 days |
| Orbital distance | 0.052 AU |
| Eccentricity | 0.177 |
| Equilibrium temperature | 1,077 K (804 °C) |
| Stellar irradiation | 232.00× Earth |
| Earth Similarity Index | 0.25 |
| Distance from Earth | 268.0 light-years (82.2 parsecs) |
| Constellation | Hydrus |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2021 |
Data: NASA Exoplanet Archive, last updated 2021-08-03. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-1062 b
Is TOI-1062 b habitable?
No — TOI-1062 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-1062 b?
TOI-1062 b is about 268 light-years from Earth in the constellation Hydrus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 4,716,800 years to get there.
How big is TOI-1062 b compared to Earth?
TOI-1062 b has 2.27 times the radius of Earth and about 10.2 times its mass.
How long is a year on TOI-1062 b?
One orbit around TOI-1062 takes 4.1 Earth days — short enough that 89 of its years would fit into one Earth year.
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