TOI-1294 c
TOI-1294 c is a cold gas giant orbiting TOI-1294 in the constellation Ursa Minor. It lies about 1,085 light-years from Earth and was discovered in 2024 using the radial velocity method.
Is TOI-1294 c in the Habitable Zone?
TOI-1294 c orbits inside the inner edge of the habitable zone of TOI-1294. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-1294: 1.151–2.716 AU (conservative: 1.458–2.575 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 ›
Orbit and Year Length
A year on TOI-1294 c — one full orbit around TOI-1294 — lasts 159.9 Earth days, between the years of Mercury (88 days) and Earth (365 days). It orbits at an average distance of 0.610 AU — comparable to the inner Solar System.
How Was TOI-1294 c Discovered?
TOI-1294 c was discovered in 2024 using the radial velocity method, with observations from W. M. Keck Observatory.
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-1294 c?
TOI-1294 c is 1,085.0 light-years (332.6 parsecs) from Earth. Light arriving here tonight left the planet about 1,085 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 19,096,000 years to make the journey.
The Host Star: TOI-1294
TOI-1294
- Surface temperature
- 5,718 K (Sun: 5,772 K)
- Mass
- 1.16 M☉
- Radius
- 1.56 R☉
- Luminosity
- 2.3360 L☉
- Age
- 6.2 billion years (Sun: 4.6)
The TOI-1294 Planetary System
TOI-1294 c is one of 2 known planets in the TOI-1294 system. Its siblings:
- TOI-1294 b (Hot Jupiter)
TOI-1294 c — Complete Data
| Mass (best estimate) | 147.00 Earth masses |
|---|---|
| Orbital period | 159.90 days |
| Orbital distance | 0.610 AU |
| Distance from Earth | 1,085.0 light-years (332.6 parsecs) |
| Constellation | Ursa Minor |
| Discovery method | Radial Velocity |
| Discovery facility | W. M. Keck Observatory |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2024-07-22. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-1294 c
Is TOI-1294 c habitable?
No — TOI-1294 c orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-1294 c?
TOI-1294 c is about 1,085 light-years from Earth in the constellation Ursa Minor. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 19,096,000 years to get there.
How long is a year on TOI-1294 c?
One orbit around TOI-1294 takes 159.9 Earth days.
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