Kepler-19c
{{Short description|Neptunian planet orbiting Kepler-19}}
{{Infobox planet
| extrasolarplanet = yes
| name = Kepler-19c
| image = Kepler19 David Aguilar.jpg
| caption = Kepler-19c
| apsis = astron
| discovery_ref =
| discoverer = Sarah Ballard et al.
| discovery_site =
| discovery_method = Transit timing variation
| alt_names =
| periastron =
| apoastron =
| semimajor =
| avg_speed =
| eccentricity =
| period = {{val|28.731|0.012|0.005|u=days}}
| inclination =
| angular_dist =
| long_periastron =
| time_periastron =
| semi-amplitude =
| mean_radius =
| surface_area =
| volume =
| density =
| mass = {{val|13.1|2.7|u=Earth masses}}
| surface_grav =
| escape_velocity =
| albedo =
| single_temperature =
}}
Kepler-19c is an extra-solar planet orbiting the star Kepler-19 approximately 717 light years from Earth.
Discovery
The planet was discovered as a result of examinations of data from the previously discovered exoplanet, Kepler-19b. Timing variations in the orbital period of the first planet necessitated gravitational forces to be acting upon the planet, resulting from an additional body in the vicinity, acting to cause a variation of transition of five minutes per orbit.[https://web.archive.org/web/20111019083552/http://kepler.nasa.gov/news/nasakeplernews/index.cfm?FuseAction=ShowNews&NewsID=148 Ames Research] retrieved 12:32 13.10.11 The lead author of the paper announcing the discovery was Sarah Ballard.{{citation|publisher=Space.com|title=Stealth Alien Planet Discovered By New Technique|author=Mike Wall | date= September 8, 2011|url=http://www.space.com/12879-stealth-alien-planet-kepler-transit-timing-variation.html}}
See also
References
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External links
- [https://web.archive.org/web/20111017222103/http://kepler.nasa.gov/Mission/discoveries/kepler19c/ Ames research] 12:21