OGLE2-TR-L9 b
OGLE2-TR-L9 b is a hot Jupiter orbiting OGLE2-TR-L9 in the constellation Carina. It lies about 5,309 light-years from Earth and was discovered in 2008 using the transit method.
How Big Is OGLE2-TR-L9 b?
OGLE2-TR-L9 b has a radius of 18.05 times that of Earth, or 1.61 times the radius of Jupiter. Its mass is 1,430 times that of Earth.
Is OGLE2-TR-L9 b in the Habitable Zone?
OGLE2-TR-L9 b orbits inside the inner edge of the habitable zone of OGLE2-TR-L9. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of OGLE2-TR-L9: 1.546–3.570 AU (conservative: 1.958–3.385 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 OGLE2-TR-L9 b — one full orbit around OGLE2-TR-L9 — lasts 2.49 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.031 AU — closer to its star than Mercury is to the Sun.
How Was OGLE2-TR-L9 b Discovered?
OGLE2-TR-L9 b was discovered in 2008 using the transit method, with observations from OGLE.
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 OGLE2-TR-L9 b?
OGLE2-TR-L9 b is 5,308.6 light-years (1,627.6 parsecs) from Earth. Light arriving here tonight left the planet about 5,309 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 93,431,360 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. OGLE2-TR-L9 b scores 0.05, ranking #5,274 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: OGLE2-TR-L9
OGLE2-TR-L9
- Surface temperature
- 6,933 K (Sun: 5,772 K)
- Mass
- 1.52 M☉
- Radius
- 1.53 R☉
Planetary System
OGLE2-TR-L9 b is the only planet known to orbit OGLE2-TR-L9 so far.
OGLE2-TR-L9 b — Complete Data
| Radius | 18.046 Earth radii (1.610 Jupiter radii) |
|---|---|
| Mass | 1,430.18 Earth masses (4.500 Jupiter masses) |
| Orbital period | 2.49 days |
| Orbital distance | 0.031 AU |
| Earth Similarity Index | 0.05 |
| Distance from Earth | 5,308.6 light-years (1,627.6 parsecs) |
| Constellation | Carina |
| Discovery method | Transit |
| Discovery facility | OGLE |
| Discovery year | 2008 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About OGLE2-TR-L9 b
Is OGLE2-TR-L9 b habitable?
No — OGLE2-TR-L9 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is OGLE2-TR-L9 b?
OGLE2-TR-L9 b is about 5,309 light-years from Earth in the constellation Carina. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 93,431,360 years to get there.
How big is OGLE2-TR-L9 b compared to Earth?
OGLE2-TR-L9 b has 18.05 times the radius of Earth and about 1,430 times its mass.
How long is a year on OGLE2-TR-L9 b?
One orbit around OGLE2-TR-L9 takes 2.5 Earth days — short enough that 147 of its years would fit into one Earth year.
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