HIP 116454 b, or K2-2 b, is an exoplanet orbiting the star HIP 116454, from

Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...

toward the constellation Pisces. It is in diameter and 12 times as massive as Earth. It was discovered by the

NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the US federal government responsible for the civil List of government space agencies, space program ...

Kepler Johannes Kepler (; ; 27 December 1571 – 15 November 1630) was a German astronomer, mathematician, astrologer, natural philosopher and writer on music. He is a key figure in the 17th-century Scientific Revolution, best known for his laws o ...

'' 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 Most or Möst or ''variation'', may refer to: Places * Most, Kardzhali Province, a village in Bulgaria * Most (city), a city in the Czech Republic ** Most District, a district surrounding the city ** Most Basin, a lowland named after the city ** A ...

satellite. Physical characteristics of are expected to be similar to Kepler-68b, being somewhere between a

super-Earth A super-Earth is an extrasolar planet with a mass higher than Earth's, but substantially below those of the Solar System's ice giants, Uranus and Neptune, which are 14.5 and 17 times Earth's, respectively. The term "super-Earth" refers only to ...

and a

mini-Neptune A Mini-Neptune (sometimes known as a gas dwarf or transitional planet) is a planet less massive than Neptune but resembling Neptune in that it has a thick hydrogen–helium atmosphere, probably with deep layers of ice, rock or liquid oceans (mad ...

References

External links

HIP 116454 b
at

SIMBAD SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data) is an astronomical database of objects beyond the Solar System. It is maintained by the Centre de données astronomiques de Strasbourg (CDS), France. SIMBA ...

HIP 116454 b
at

Extrasolar Planets Encyclopaedia The Extrasolar Planets Encyclopaedia is an astronomy website, founded in Paris, France at the Meudon Observatory by Jean Schneider in February 1995, which maintains a database of all the currently known and candidate extrasolar planets, with in ...

Exoplanets discovered in 2014 Super-Earths Exoplanets discovered by K2 Pisces (constellation) Transiting exoplanets {{DEFAULTSORT:K2-2b