Kepler-9 c
Sign in to saveKepler-9c is one of the first seven extrasolar planets, exoplanets, discovered by NASA's Kepler Mission, and one of at least two planets orbiting the star Kepler-9. Kepler-9c and Kepler-9b were the first exoplanets confirmed to be transiting their star. The planet's discovery was announced by the Kepler Mission team on August 26, 2010 after its initial discovery by Kepler. At the time, it was one of 700 planetary candidates noted by Kepler.
Astronomical data · SIMBAD
- Object type
- Pl
- Distance
- 2,061 light-years
- Coordinates
- RA 285.5740° · Dec 38.4009°
via SIMBAD · CDS Strasbourg
Key facts
- Planet.name
- Kepler-9c
- Planet.image
- Exoplanet Comparison Kepler-9 c.png
- Planet.caption
- Size comparison of Kepler-9c (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
- 38.91 d
- Planet.inclination
- 88.12
- Planet.star
- Kepler-9
- Planet.mean_radius
- 0.823 ± 0.067
- Planet.mass
- 0.171 ± 0.013
- Planet.single_temperature
- 536K
via Wikipedia infobox
Exoplanet data
- Host star
- Kepler-9
- Discovered
- 2010
- Discovered by
- Kepler
- Orbital period
- 38.99 days
- Radius
- 8.08 × Earth
- Mass
- 29.90 × Earth
- Equilibrium temp
- 523 K
- Distance
- 628.26 pc
via NASA Exoplanet Archive
Wikidata facts
- Constellation
- Lyra
- Parent body
- Kepler-9
- Diameter
- 113000
- Radius
- 0.721
- Mass
- 0.09408
- Orbital period
- 38.90787517
- Image
- Exoplanet Comparison Kepler-9 c.png
Show 16 more facts
- time of discovery or invention
- 2010-10-00
- catalog code
- Kepler-9c
- discovery method
- transit method
- Commons category
- Kepler-9 c
- discoverer or inventor
- Kepler Space Telescope
- right ascension
- 285.57397671045170
- declination
- 38.40088256864889
- epoch
- J2000.0
- argument of periapsis
- 167.5
- semi-major axis of an orbit
- 0.226498247
- right ascension component of proper motion
- 2.491
- declination component of proper motion
- -14.713
- orbital eccentricity
- 0
- parallax
- 1.5629
- orbital inclination
- 89.188
- M sin i
- 0.08584647021
Sources (2)
via Wikidata · CC0
~4 min read
Encyclopedic overview
6 sectionsContents
- Nomenclature and history
- Characteristics
- In popular culture
- See also
- References
- External links
Kepler-9c is one of the first seven extrasolar planets, exoplanets, discovered by NASA's Kepler Mission, and one of at least two planets orbiting the star Kepler-9. Kepler-9c and Kepler-9b were the first exoplanets confirmed to be transiting their star. The planet's discovery was announced by the Kepler Mission team on August 26, 2010 after its initial discovery by Kepler. At the time, it was one of 700 planetary candidates noted by Kepler.
Observations of the planet have suggested that it is a hydrogen–helium gas giant that is slightly smaller than Saturn, and that it orbits nearby its star at .225 AU. Kepler-9c and b are notable in that the planets share a pattern of orbital resonance, in which the orbit of each planet stabilizes the orbit of the other. During the time it was observed by the spacecraft, the planet's orbit, which lasts on average approximately 38 days, shortened by 39 minutes every orbital period because of this effect. Its orbit, over time, oscillates slightly above and below a 2:1 ratio with planet b.
Excerpted from Wikipedia’s “Kepler-9 c” article, available under the CC BY-SA 4.0 licence.