Key facts
- Planet.name
- Kepler-9b
- Planet.image
- Exoplanet Comparison Kepler-9 b.png
- Planet.caption
- Size comparison of Kepler-9b (left) with Jupiter (right)
- Planet.discoverer
- Kepler Mission team
- Planet.discovery_site
- Kepler space telescope
- Planet.discovered
- 26 August 2010
- Planet.discovery_method
- Transit
- Planet.apsis
- astron
- Planet.eccentricity
- 0
- Planet.period
- 19.24 d
- Planet.inclination
- 88.55
- Planet.star
- Kepler-9
- Planet.mean_radius
- 0.842 ± 0.069
- Planet.density
- g cm−3
via Wikipedia infobox
Article
5 sectionsContents
- Nomenclature and history
- Characteristics
- Other planets in the Kepler-9 system
- References
- External links
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Kepler-9b is one of the first planets discovered outside the Solar System (exoplanets) by NASA's Kepler Mission. It revolves around the star Kepler-9 within the constellation Lyra. Kepler-9b is the largest of three planets detected in the Kepler system by transit method; its mass is roughly half that of the planet Saturn, and it is the largest planet in its system. Kepler-9b and Kepler-9c display a phenomenon called orbital resonance, in which gravitational pull from each planet alters and stabilizes the orbit of the other. The planet's discovery was announced on August 26, 2010.