TOI-4633 c
TOI-4633 c is a super-Earth orbiting the G V star TOI-4633 in the constellation Draco. It lies about 311 light-years from Earth and was discovered in 2024 using the transit method. It orbits within the habitable zone of its star — the region where liquid water could exist on a planet's surface.
How Big Is TOI-4633 c?
TOI-4633 c has a radius of 3.20 times that of Earth. Its mass is 123 times that of Earth.
Is TOI-4633 c in the Habitable Zone?
TOI-4633 c orbits within the optimistic habitable zone of TOI-4633 — the broader region where liquid water might be possible under favorable atmospheric conditions.
Habitable zone of TOI-4633: 0.793–1.867 AU (conservative: 1.004–1.770 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-4633 c
TOI-4633 c receives 1.56 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on TOI-4633 c — one full orbit around TOI-4633 — lasts 271.9 Earth days, between the years of Mercury (88 days) and Earth (365 days). It orbits at an average distance of 0.847 AU — comparable to the inner Solar System. Its orbit is mildly elliptical (eccentricity 0.12).
How Was TOI-4633 c Discovered?
TOI-4633 c was discovered in 2024 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-4633 c?
TOI-4633 c is 310.5 light-years (95.2 parsecs) from Earth. Light arriving here tonight left the planet around the year 1716. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 5,464,800 years to make the journey.
The Host Star: TOI-4633
TOI-4633 c belongs to a system of 2 stars; it orbits TOI-4633.
TOI-4633
- Spectral type
- G V
- Surface temperature
- 5,800 K (Sun: 5,772 K)
- Mass
- 1.10 M☉
- Radius
- 1.05 R☉
- Age
- 1.3 billion years (Sun: 4.6)
Planetary System
TOI-4633 c is the only planet known to orbit TOI-4633 so far.
TOI-4633 c — Complete Data
| Radius | 3.200 Earth radii (0.285 Jupiter radii) |
|---|---|
| Mass | 123.00 Earth masses (0.387 Jupiter masses) |
| Orbital period | 271.94 days |
| Orbital distance | 0.847 AU |
| Eccentricity | 0.117 |
| Stellar irradiation | 1.56× Earth |
| Distance from Earth | 310.5 light-years (95.2 parsecs) |
| Constellation | Draco |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2024-05-13. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-4633 c
Is TOI-4633 c habitable?
TOI-4633 c orbits within the habitable zone of TOI-4633, the region where liquid water could exist on a planet's surface. Whether it is actually habitable depends on its atmosphere and composition, which remain unknown.
How far away is TOI-4633 c?
TOI-4633 c is about 311 light-years from Earth in the constellation Draco. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 5,464,800 years to get there.
How big is TOI-4633 c compared to Earth?
TOI-4633 c has 3.20 times the radius of Earth and about 123 times its mass.
How long is a year on TOI-4633 c?
One orbit around TOI-4633 takes 271.9 Earth days.
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