TOI-2093 c
TOI-2093 c is a super-Earth orbiting the K5 V star TOI-2093 in the constellation Draco. It lies about 270 light-years from Earth and was discovered in 2025 using the transit method.
How Big Is TOI-2093 c?
TOI-2093 c has a radius of 2.30 times that of Earth. Its mass is 15.8 times that of Earth, giving it a density of 7.00 g/cm³ — comparable to rocky planets like Earth (5.51 g/cm³).
Is TOI-2093 c in the Habitable Zone?
TOI-2093 c orbits inside the inner edge of the habitable zone of TOI-2093. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-2093: 0.344–0.852 AU (conservative: 0.435–0.808 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on TOI-2093 c
The equilibrium temperature of TOI-2093 c is about 329 K (56 °C) — in a range broadly comparable to Earth, whose equilibrium temperature is 255 K. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C.
Orbit and Year Length
A year on TOI-2093 c — one full orbit around TOI-2093 — lasts 53.8 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.257 AU — closer to its star than Mercury is to the Sun.
How Was TOI-2093 c Discovered?
TOI-2093 c 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.
How Far Away Is TOI-2093 c?
TOI-2093 c is 270.1 light-years (82.8 parsecs) from Earth. Light arriving here tonight left the planet around the year 1756. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 4,753,760 years to make the journey.
The Host Star: TOI-2093
TOI-2093
- Spectral type
- K5 V
- Surface temperature
- 4,426 K (Sun: 5,772 K)
- Mass
- 0.75 M☉
- Radius
- 0.73 R☉
- Luminosity
- 0.1838 L☉
- Age
- 6.6 billion years (Sun: 4.6)
The TOI-2093 Planetary System
TOI-2093 c is one of 2 known planets in the TOI-2093 system. Its siblings:
- TOI-2093 b (Neptune-like)
TOI-2093 c — Complete Data
| Radius | 2.300 Earth radii (0.205 Jupiter radii) |
|---|---|
| Mass | 15.80 Earth masses (0.050 Jupiter masses) |
| Density | 7.00 g/cm³ (Earth: 5.51) |
| Orbital period | 53.81 days |
| Orbital distance | 0.257 AU |
| Equilibrium temperature | 329 K (56 °C) |
| Distance from Earth | 270.1 light-years (82.8 parsecs) |
| Constellation | Draco |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-10-30. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-2093 c
Is TOI-2093 c habitable?
No — TOI-2093 c orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-2093 c?
TOI-2093 c is about 270 light-years from Earth in the constellation Draco. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 4,753,760 years to get there.
How big is TOI-2093 c compared to Earth?
TOI-2093 c has 2.30 times the radius of Earth and about 15.8 times its mass.
How long is a year on TOI-2093 c?
One orbit around TOI-2093 takes 53.8 Earth days.
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