CoRoT-19 b
CoRoT-19 b is a hot Jupiter orbiting the F9 V star CoRoT-19 in the constellation Monoceros. It lies about 2,579 light-years from Earth and was discovered in 2011 using the transit method.
How Big Is CoRoT-19 b?
CoRoT-19 b has a radius of 14.46 times that of Earth, or 1.29 times the radius of Jupiter. Its mass is 353 times that of Earth, giving it a density of 0.71 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is CoRoT-19 b in the Habitable Zone?
CoRoT-19 b orbits inside the inner edge of the habitable zone of CoRoT-19. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of CoRoT-19: 1.378–3.221 AU (conservative: 1.745–3.054 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on CoRoT-19 b
The equilibrium temperature of CoRoT-19 b is about 2,000 K (1,727 °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-19 b — one full orbit around CoRoT-19 — lasts 3.90 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.052 AU — closer to its star than Mercury is to the Sun. Its orbit is nearly circular (eccentricity 0.047).
How Was CoRoT-19 b Discovered?
CoRoT-19 b was discovered in 2011 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-19 b?
CoRoT-19 b is 2,578.8 light-years (790.7 parsecs) from Earth. Light arriving here tonight left the planet about 2,579 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 45,386,880 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-19 b scores 0.06, ranking #5,092 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: CoRoT-19
CoRoT-19
- Spectral type
- F9 V
- Surface temperature
- 6,090 K (Sun: 5,772 K)
- Mass
- 1.21 M☉
- Radius
- 1.65 R☉
- Luminosity
- 3.4995 L☉
- Age
- 5.0 billion years (Sun: 4.6)
Planetary System
CoRoT-19 b is the only planet known to orbit CoRoT-19 so far.
CoRoT-19 b — Complete Data
| Radius | 14.460 Earth radii (1.290 Jupiter radii) |
|---|---|
| Mass | 352.78 Earth masses (1.110 Jupiter masses) |
| Density | 0.71 g/cm³ (Earth: 5.51) |
| Orbital period | 3.90 days |
| Orbital distance | 0.052 AU |
| Eccentricity | 0.047 |
| Equilibrium temperature | 2,000 K (1,727 °C) |
| Earth Similarity Index | 0.06 |
| Distance from Earth | 2,578.8 light-years (790.7 parsecs) |
| Constellation | Monoceros |
| Discovery method | Transit |
| Discovery facility | CoRoT |
| Discovery year | 2011 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About CoRoT-19 b
Is CoRoT-19 b habitable?
No — CoRoT-19 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is CoRoT-19 b?
CoRoT-19 b is about 2,579 light-years from Earth in the constellation Monoceros. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 45,386,880 years to get there.
How big is CoRoT-19 b compared to Earth?
CoRoT-19 b has 14.46 times the radius of Earth and about 353 times its mass.
How long is a year on CoRoT-19 b?
One orbit around CoRoT-19 takes 3.9 Earth days — short enough that 94 of its years would fit into one Earth year.
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