CoRoT-29 b
CoRoT-29 b is a hot Jupiter orbiting the K0 V star CoRoT-29 in the constellation Ophiuchus. It lies about 2,631 light-years from Earth and was discovered in 2015 using the transit method.
How Big Is CoRoT-29 b?
CoRoT-29 b has a radius of 10.09 times that of Earth, or 0.90 times the radius of Jupiter. Its mass is 270 times that of Earth, giving it a density of 1.45 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is CoRoT-29 b in the Habitable Zone?
CoRoT-29 b orbits inside the inner edge of the habitable zone of CoRoT-29. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of CoRoT-29: 0.577–1.380 AU (conservative: 0.730–1.309 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 CoRoT-29 b — one full orbit around CoRoT-29 — lasts 2.85 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.039 AU — closer to its star than Mercury is to the Sun. Its orbit is mildly elliptical (eccentricity 0.08).
How Was CoRoT-29 b Discovered?
CoRoT-29 b was discovered in 2015 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-29 b?
CoRoT-29 b is 2,630.5 light-years (806.5 parsecs) from Earth. Light arriving here tonight left the planet about 2,631 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 46,296,800 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-29 b scores 0.09, ranking #4,539 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: CoRoT-29
CoRoT-29
- Spectral type
- K0 V
- Surface temperature
- 5,260 K (Sun: 5,772 K)
- Mass
- 0.97 M☉
- Radius
- 0.90 R☉
- Age
- 4.5 billion years (Sun: 4.6)
Planetary System
CoRoT-29 b is the only planet known to orbit CoRoT-29 so far.
CoRoT-29 b — Complete Data
| Radius | 10.088 Earth radii (0.900 Jupiter radii) |
|---|---|
| Mass | 270.16 Earth masses (0.850 Jupiter masses) |
| Density | 1.45 g/cm³ (Earth: 5.51) |
| Orbital period | 2.85 days |
| Orbital distance | 0.039 AU |
| Eccentricity | 0.082 |
| Earth Similarity Index | 0.09 |
| Distance from Earth | 2,630.5 light-years (806.5 parsecs) |
| Constellation | Ophiuchus |
| Discovery method | Transit |
| Discovery facility | CoRoT |
| Discovery year | 2015 |
Data: NASA Exoplanet Archive, last updated 2015-04-16. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About CoRoT-29 b
Is CoRoT-29 b habitable?
No — CoRoT-29 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is CoRoT-29 b?
CoRoT-29 b is about 2,631 light-years from Earth in the constellation Ophiuchus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 46,296,800 years to get there.
How big is CoRoT-29 b compared to Earth?
CoRoT-29 b has 10.09 times the radius of Earth and about 270 times its mass.
How long is a year on CoRoT-29 b?
One orbit around CoRoT-29 takes 2.9 Earth days — short enough that 128 of its years would fit into one Earth year.
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