Kepler-19c

Kepler-19c is an extra-solar planet orbiting the star Kepler-19 approximately 717 light years from Earth.^[3]

Kepler-19c

Kepler-19c
Discovery
Discovered by	Sarah Ballard et al.[1]
Discovery date	2011[1]
Detection method	Transit timing variation
Orbital characteristics
Orbital period (sidereal)	28.731+0.012 −0.005 d[2]
Physical characteristics
Mass	13.1±2.7 Earth masses[2]

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.^[1][4] The lead author of the paper announcing the discovery was Sarah Ballard.^[5]

See also

• List of extrasolar planet firsts