TOI-4504 b
TOI-4504 b is a super-Earth 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 b?
TOI-4504 b has a radius of 2.65 times that of Earth. Its mass is 140 times that of Earth, giving it a density of 44.00 g/cm³ — comparable to rocky planets like Earth (5.51 g/cm³).
Is TOI-4504 b in the Habitable Zone?
The position of TOI-4504 b relative to the habitable zone of TOI-4504 cannot be precisely determined from the available orbital data.
Temperature on TOI-4504 b
The equilibrium temperature of TOI-4504 b is about 1,345 K (1,072 °C) — hot enough to melt many metals. 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 b — one full orbit around TOI-4504 — lasts 2.43 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.034 AU — closer to its star than Mercury is to the Sun. Its orbit is highly elliptical (eccentricity 0.84), swinging dramatically closer to and farther from its star.
How Was TOI-4504 b Discovered?
TOI-4504 b 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 b?
TOI-4504 b 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 b is one of 3 known planets in the TOI-4504 system. Its siblings:
- TOI-4504 c (Cold Gas Giant)
- TOI-4504 d (Cold Gas Giant)
TOI-4504 b — Complete Data
| Radius | 2.650 Earth radii (0.236 Jupiter radii) |
|---|---|
| Mass | 140.00 Earth masses (0.450 Jupiter masses) |
| Density | 44.00 g/cm³ (Earth: 5.51) |
| Orbital period | 2.43 days |
| Orbital distance | 0.034 AU |
| Eccentricity | 0.840 |
| Equilibrium temperature | 1,345 K (1,072 °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 b
Is TOI-4504 b habitable?
TOI-4504 b is not known to orbit within the habitable zone of TOI-4504, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is TOI-4504 b?
TOI-4504 b 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 b compared to Earth?
TOI-4504 b has 2.65 times the radius of Earth and about 140 times its mass.
How long is a year on TOI-4504 b?
One orbit around TOI-4504 takes 2.4 Earth days — short enough that 151 of its years would fit into one Earth year.
Explore TOI-4504 b in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
