TOI-5489 c
TOI-5489 c is a super-Earth orbiting TOI-5489 in the constellation Cancer. It lies about 147 light-years from Earth and was discovered in 2025 using the transit method.
How Big Is TOI-5489 c?
TOI-5489 c has a radius of 1.28 times that of Earth.
Is TOI-5489 c in the Habitable Zone?
The position of TOI-5489 c relative to the habitable zone of TOI-5489 cannot be precisely determined from the available orbital data.
Habitable zone of TOI-5489: 0.129–0.335 AU (conservative: 0.164–0.318 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 ›
Temperature on TOI-5489 c
The equilibrium temperature of TOI-5489 c is about 536 K (263 °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-5489 c — one full orbit around TOI-5489 — lasts 4.92 Earth days, shorter than Mercury's 88-day year.
How Was TOI-5489 c Discovered?
TOI-5489 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-5489 c?
TOI-5489 c is 147.1 light-years (45.1 parsecs) from Earth. Light arriving here tonight left the planet around the year 1879. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 2,588,960 years to make the journey.
The Host Star: TOI-5489
TOI-5489
- Surface temperature
- 3,547 K (Sun: 5,772 K)
- Mass
- 0.41 M☉
- Radius
- 0.42 R☉
The TOI-5489 Planetary System
TOI-5489 c is one of 2 known planets in the TOI-5489 system. Its siblings:
- TOI-5489 b (Super Earth)
TOI-5489 c — Complete Data
| Radius | 1.280 Earth radii (0.114 Jupiter radii) |
|---|---|
| Orbital period | 4.92 days |
| Equilibrium temperature | 536 K (263 °C) |
| Distance from Earth | 147.1 light-years (45.1 parsecs) |
| Constellation | Cancer |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2026-01-08. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-5489 c
Is TOI-5489 c habitable?
TOI-5489 c is not known to orbit within the habitable zone of TOI-5489, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is TOI-5489 c?
TOI-5489 c is about 147 light-years from Earth in the constellation Cancer. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 2,588,960 years to get there.
How big is TOI-5489 c compared to Earth?
TOI-5489 c has 1.28 times the radius of Earth.
How long is a year on TOI-5489 c?
One orbit around TOI-5489 takes 4.9 Earth days — short enough that 74 of its years would fit into one Earth year.
Explore TOI-5489 c in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
