TOI-6695 c
TOI-6695 c is a cold gas giant orbiting the F5V-G0V star TOI-6695 in the constellation Pyxis. It lies about 922 light-years from Earth and was discovered in 2025 using the radial velocity method.
Is TOI-6695 c in the Habitable Zone?
TOI-6695 c orbits inside the inner edge of the habitable zone of TOI-6695. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-6695: 1.346–3.130 AU (conservative: 1.705–2.967 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on TOI-6695 c
The equilibrium temperature of TOI-6695 c is about 415 K (142 °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.
Orbit and Year Length
A year on TOI-6695 c — one full orbit around TOI-6695 — lasts 242.4 Earth days, between the years of Mercury (88 days) and Earth (365 days). It orbits at an average distance of 0.838 AU — comparable to the inner Solar System. Its orbit is nearly circular (eccentricity 0.022).
How Was TOI-6695 c Discovered?
TOI-6695 c was discovered in 2025 using the radial velocity method, with observations from Multiple Observatories.
The radial velocity method measures the subtle wobble of a star caused by the gravitational pull of an orbiting planet, visible as periodic shifts in the star's light spectrum. The size of the wobble reveals the planet's minimum mass.
How Far Away Is TOI-6695 c?
TOI-6695 c is 921.5 light-years (282.5 parsecs) from Earth. Light arriving here tonight left the planet around the year 1105. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 16,218,400 years to make the journey.
The Host Star: TOI-6695
TOI-6695
- Spectral type
- F5V-G0V
- Surface temperature
- 6,400 K (Sun: 5,772 K)
- Mass
- 1.34 M☉
- Radius
- 1.52 R☉
- Luminosity
- 3.4700 L☉
- Age
- 2.1 billion years (Sun: 4.6)
The TOI-6695 Planetary System
TOI-6695 c is one of 2 known planets in the TOI-6695 system. Its siblings:
- TOI-6695 b (Cold Gas Giant)
TOI-6695 c — Complete Data
| Mass (best estimate) | 460.85 Earth masses |
|---|---|
| Orbital period | 242.40 days |
| Orbital distance | 0.838 AU |
| Eccentricity | 0.022 |
| Equilibrium temperature | 415 K (142 °C) |
| Distance from Earth | 921.5 light-years (282.5 parsecs) |
| Constellation | Pyxis |
| Discovery method | Radial Velocity |
| Discovery facility | Multiple Observatories |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-05-27. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-6695 c
Is TOI-6695 c habitable?
No — TOI-6695 c orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-6695 c?
TOI-6695 c is about 922 light-years from Earth in the constellation Pyxis. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 16,218,400 years to get there.
How long is a year on TOI-6695 c?
One orbit around TOI-6695 takes 242.4 Earth days.
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