TOI-2267 d
TOI-2267 d is a super-Earth orbiting TOI-2267 B in the constellation Cepheus. It was discovered in 2025 using the transit method.
How Big Is TOI-2267 d?
TOI-2267 d has a radius of 1.77 times that of Earth.
Is TOI-2267 d in the Habitable Zone?
The position of TOI-2267 d relative to the habitable zone of TOI-2267 B cannot be precisely determined from the available orbital data.
Temperature on TOI-2267 d
The equilibrium temperature of TOI-2267 d is about 422 K (149 °C) — hotter than anywhere on Earth. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C. It receives 5.30 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on TOI-2267 d — one full orbit around TOI-2267 B — lasts 2.03 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.015 AU — closer to its star than Mercury is to the Sun.
How Was TOI-2267 d Discovered?
TOI-2267 d 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.
The Host Star: TOI-2267 B
TOI-2267 d belongs to a system of 2 stars; it orbits TOI-2267 B.
TOI-2267 B
- Radius
- 0.13 R☉
Planetary System
TOI-2267 d is the only planet known to orbit TOI-2267 B so far.
TOI-2267 d — Complete Data
| Radius | 1.770 Earth radii (0.158 Jupiter radii) |
|---|---|
| Orbital period | 2.03 days |
| Orbital distance | 0.015 AU |
| Equilibrium temperature | 422 K (149 °C) |
| Stellar irradiation | 5.30× Earth |
| Constellation | Cepheus |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2026-03-05. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-2267 d
Is TOI-2267 d habitable?
TOI-2267 d is not known to orbit within the habitable zone of TOI-2267 B, and as a super-Earth it is an unlikely candidate for life as we know it.
How big is TOI-2267 d compared to Earth?
TOI-2267 d has 1.77 times the radius of Earth.
How long is a year on TOI-2267 d?
One orbit around TOI-2267 B takes 2.0 Earth days — short enough that 180 of its years would fit into one Earth year.
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