TOI-4504 c
TOI-4504 c is a cold gas giant orbiting TOI-4504 in the constellation Carina. It lies about 1,117 light-years from Earth and was discovered in 2024 using the transit method.
How Big Is TOI-4504 c?
TOI-4504 c has a radius of 11.17 times that of Earth, or 1.00 times the radius of Jupiter. Its mass is 821 times that of Earth, giving it a density of 3.24 g/cm³ — between that of rocky and gaseous planets.
Is TOI-4504 c in the Habitable Zone?
The position of TOI-4504 c relative to the habitable zone of TOI-4504 cannot be precisely determined from the available orbital data.
Temperature on TOI-4504 c
The equilibrium temperature of TOI-4504 c is about 413 K (139 °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-4504 c — one full orbit around TOI-4504 — lasts 82.8 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.359 AU — closer to its star than Mercury is to the Sun. Its orbit is nearly circular (eccentricity 0.050).
How Was TOI-4504 c Discovered?
TOI-4504 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-4504 c?
TOI-4504 c is 1,117.4 light-years (342.6 parsecs) from Earth. Light arriving here tonight left the planet about 1,117 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 19,666,240 years to make the journey.
The Host Star: TOI-4504
TOI-4504
- Mass
- 0.88 M☉
- Radius
- 0.93 R☉
The TOI-4504 Planetary System
TOI-4504 c is one of 3 known planets in the TOI-4504 system. Its siblings:
- TOI-4504 b (Super Earth)
- TOI-4504 d (Cold Gas Giant)
TOI-4504 c — Complete Data
| Radius | 11.170 Earth radii (0.997 Jupiter radii) |
|---|---|
| Mass | 821.00 Earth masses (2.580 Jupiter masses) |
| Density | 3.24 g/cm³ (Earth: 5.51) |
| Orbital period | 82.82 days |
| Orbital distance | 0.359 AU |
| Eccentricity | 0.050 |
| Equilibrium temperature | 413 K (139 °C) |
| Distance from Earth | 1,117.4 light-years (342.6 parsecs) |
| Constellation | Carina |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2026-08-06. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-4504 c
Is TOI-4504 c habitable?
TOI-4504 c is not known to orbit within the habitable zone of TOI-4504, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is TOI-4504 c?
TOI-4504 c is about 1,117 light-years from Earth in the constellation Carina. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 19,666,240 years to get there.
How big is TOI-4504 c compared to Earth?
TOI-4504 c has 11.17 times the radius of Earth and about 821 times its mass.
How long is a year on TOI-4504 c?
One orbit around TOI-4504 takes 82.8 Earth days.
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