Statements (49)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:planet
|
| gptkbp:bfsLayer |
5
|
| gptkbp:bfsParent |
gptkb:Kepler-9_system
|
| gptkbp:apparent_magnitude |
not directly observable
|
| gptkbp:area |
approximately 0.88 times the radius of Jupiter
|
| gptkbp:atmosphere |
hydrogen and helium
potentially thick atmosphere |
| gptkbp:average_temperature |
approximately 1200 K
|
| gptkbp:contains |
gptkb:Milky_Way
G-type star |
| gptkbp:controls |
gptkb:Kepler-9_system
approximately 4.5 billion years |
| gptkbp:country |
gptkb:engine
formed in a protoplanetary disk Kepler-9 planetary system |
| gptkbp:discovered_by |
gptkb:Geoffrey_W._Marcy
gptkb:Kepler_Space_Telescope transit method published in 2010 |
| gptkbp:distance |
approximately 330 light years
|
| gptkbp:eccentricity |
0.2
0.0 |
| gptkbp:elevation |
approximately 100 km/s
0.11 AU from its star |
| gptkbp:first_appearance |
gptkb:2009
|
| gptkbp:growth_habit |
not habitable due to high temperatures
|
| gptkbp:hosts |
gptkb:Kepler-9
|
| https://www.w3.org/2000/01/rdf-schema#label |
Kepler-9c
|
| gptkbp:lighting |
Kepler light curve data
|
| gptkbp:mass |
1.1 times the mass of the Sun
1.1 times the radius of the Sun 0.5 to 1.5 times Jupiter's mass approximately 0.84 times the mass of Jupiter 2.5 times that of Earth |
| gptkbp:migration |
inward migration
|
| gptkbp:number |
second planet in the Kepler-9 system
|
| gptkbp:orbital_inclination |
88.5 degrees
|
| gptkbp:orbital_period |
19.6 days
38.9 days 2:1 with Kepler-9b |
| gptkbp:research |
photometry
collected by Kepler mission |
| gptkbp:semi_major_axis |
0.11 AU
0.19 AU |
| gptkbp:transmission |
approximately 0.5%
|
| gptkbp:type |
gptkb:galaxy
|
| gptkbp:year |
19.6 days
0.053 years |
| gptkbp:year_created |
gptkb:2010
|