CoRoT-13 b
CoRoT-13 b is a hot Jupiter orbiting the G0 V star CoRoT-13 in the constellation Monoceros. It lies about 3,747 light-years from Earth and was discovered in 2010 using the transit method.
How Big Is CoRoT-13 b?
CoRoT-13 b has a radius of 9.92 times that of Earth, or 0.89 times the radius of Jupiter. Its mass is 416 times that of Earth, giving it a density of 2.34 g/cm³ — between that of rocky and gaseous planets.
Is CoRoT-13 b in the Habitable Zone?
CoRoT-13 b orbits inside the inner edge of the habitable zone of CoRoT-13. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of CoRoT-13: 0.794–1.864 AU (conservative: 1.006–1.767 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 CoRoT-13 b
The equilibrium temperature of CoRoT-13 b is about 1,700 K (1,427 °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 CoRoT-13 b — one full orbit around CoRoT-13 — lasts 4.04 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.051 AU — closer to its star than Mercury is to the Sun.
How Was CoRoT-13 b Discovered?
CoRoT-13 b was discovered in 2010 using the transit method, with observations from CoRoT.
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 CoRoT-13 b?
CoRoT-13 b is 3,747.3 light-years (1,148.9 parsecs) from Earth. Light arriving here tonight left the planet about 3,747 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 65,952,480 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. CoRoT-13 b scores 0.09, ranking #4,526 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: CoRoT-13
CoRoT-13
- Spectral type
- G0 V
- Surface temperature
- 5,945 K (Sun: 5,772 K)
- Mass
- 1.09 M☉
- Radius
- 1.01 R☉
- Age
- 1.6 billion years (Sun: 4.6)
Planetary System
CoRoT-13 b is the only planet known to orbit CoRoT-13 so far.
CoRoT-13 b — Complete Data
| Radius | 9.920 Earth radii (0.885 Jupiter radii) |
|---|---|
| Mass | 415.70 Earth masses (1.308 Jupiter masses) |
| Density | 2.34 g/cm³ (Earth: 5.51) |
| Orbital period | 4.04 days |
| Orbital distance | 0.051 AU |
| Equilibrium temperature | 1,700 K (1,427 °C) |
| Earth Similarity Index | 0.09 |
| Distance from Earth | 3,747.3 light-years (1,148.9 parsecs) |
| Constellation | Monoceros |
| Discovery method | Transit |
| Discovery facility | CoRoT |
| Discovery year | 2010 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About CoRoT-13 b
Is CoRoT-13 b habitable?
No — CoRoT-13 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is CoRoT-13 b?
CoRoT-13 b is about 3,747 light-years from Earth in the constellation Monoceros. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 65,952,480 years to get there.
How big is CoRoT-13 b compared to Earth?
CoRoT-13 b has 9.92 times the radius of Earth and about 416 times its mass.
How long is a year on CoRoT-13 b?
One orbit around CoRoT-13 takes 4.0 Earth days — short enough that 91 of its years would fit into one Earth year.
Explore CoRoT-13 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.
