HIP 116454 B
HIP 116454 b, or K2-2 b, is an exoplanet orbiting the star HIP 116454, from Earth toward the constellation Pisces. It is in diameter and 12 times as massive as Earth. It was discovered by the NASA ''Kepler'' spacecraft, and is the first exoplanet discovered during ''Kepler'' K2 mission. The discovery was announced on December 18, 2014. does not have a normal ''Kepler'' designation due to not being located in the original ''Kepler'' field. was discovered in a ''Kepler'' engineering data set which was collected in preparation of the first full K2 campaign. Unlike most other ''Kepler'' planets, only a single transit event of was detected, requiring follow-up radial velocity measurements by the HARPS-N spectrograph and photometric measurements by the Canadian MOST satellite. Physical characteristics of are expected to be similar to Kepler-68b, being somewhere between a super-Earth and a mini-Neptune. References External linksHIP 116454 bat SIMBADHIP 116454 bat Extraso ...
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Kepler (spacecraft)
The Kepler space telescope is a disused space telescope launched by NASA in 2009 to discover Earth-sized planets orbiting other stars. Named after astronomer Johannes Kepler, the spacecraft was launched into an Earth-trailing heliocentric orbit. The principal investigator was William J. Borucki. After nine and a half years of operation, the telescope's reaction control system fuel was depleted, and NASA announced its retirement on October 30, 2018. Designed to survey a portion of Earth's region of the Milky Way to discover Earth-size exoplanets in or near habitable zones and estimate how many of the billions of stars in the Milky Way have such planets, Kepler's sole scientific instrument is a photometer that continually monitored the brightness of approximately 150,000 main sequence stars in a fixed field of view. These data were transmitted to Earth, then analyzed to detect periodic dimming caused by exoplanets that cross in front of their host star. Only planets whose orbi ...