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'''HIP 116454 b''', or '''K2-2 b''',<ref name="nasaexoarchive"/> is an ] orbiting the star ], {{convert|180|ly|pc|disp=flip|lk=on}} from ] toward the constellation ]. It is {{convert|20000|mi|km|disp=flip}} in diameter and 12 times as massive as Earth.<ref name="nytimes20141219"/><ref name="yahoo20141218"/> It was discovered by the ] '']'' spacecraft, and is the first exoplanet discovered during ''Kepler''{{'s}} ].<ref name="NASA-20141218-FC"/> The discovery was announced on December 18, 2014. {{j|HIP 116454 b}} does not have a normal ''Kepler'' designation due to not being located in the original ''Kepler'' field.<ref name="NASA-20141218-FC"/> '''HIP 116454 b''', or '''K2-2 b''',<ref name="nasaexoarchive"/> is an ] orbiting the star ], {{convert|180|ly|pc|disp=flip|lk=on}} from ] toward the constellation ]. It is {{convert|20000|mi|km|disp=flip}} in diameter and 12 times as massive as Earth.<ref name="nytimes20141219"/><ref name="yahoo20141218"/> It was discovered by the ] '']'' spacecraft, and is the first exoplanet discovered during ''Kepler''{{'s}} ].<ref name="NASA-20141218-FC"/> The discovery was announced on December 18, 2014. {{nowrap|HIP 116454 b}} does not have a normal ''Kepler'' designation due to not being located in the original ''Kepler'' field.<ref name="NASA-20141218-FC"/>


{{j|HIP 116454 b}} 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 {{j|HIP 116454 b}} was detected, requiring follow-up ] measurements by the ] spectrograph and ] measurements by the Canadian ] satellite.<ref name="Vanderburg2014"/><ref name="province20141218"/> {{nowrap|HIP 116454 b}} 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 {{nowrap|HIP 116454 b}} was detected, requiring follow-up ] measurements by the ] spectrograph and ] measurements by the Canadian ] satellite.<ref name="Vanderburg2014"/><ref name="province20141218"/>


Physical characteristics of {{j|HIP 116454 b}} are expected to be similar to ], being somewhere between ] and ].<ref name="Vanderburg2014"/> Physical characteristics of {{nowrap|HIP 116454 b}} are expected to be similar to ], being somewhere between ] and ].<ref name="Vanderburg2014"/>


==References== ==References==

Revision as of 01:04, 2 January 2016

Template:Planetbox begin Template:Planetbox star Template:Planetbox orbit Template:Planetbox character Template:Planetbox end

HIP 116454 b, or K2-2 b, is an exoplanet orbiting the star HIP 116454, 55 parsecs (180 ly) from Earth toward the constellation Pisces. It is 32,000 kilometres (20,000 mi) 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's K2 mission. The discovery was announced on December 18, 2014. HIP 116454 b does not have a normal Kepler designation due to not being located in the original Kepler field.

HIP 116454 b 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 HIP 116454 b was detected, requiring follow-up radial velocity measurements by the HARPS-N spectrograph and photometric measurements by the Canadian MOST satellite.

Physical characteristics of HIP 116454 b are expected to be similar to Kepler-68b, being somewhere between super-Earth and mini-Neptune.

References

  1. "HIP 116454 b". NASA Exoplanet Archive. Retrieved February 7, 2015.
  2. Overbye, Dennis (December 19, 2014). "Kepler Spacecraft Finds New 'Super-Earth' 180 Light-Years Away". The New York Times. Retrieved December 19, 2014.
  3. Wall, Mike (December 18, 2014). "NASA's Kepler Spacecraft Finds 1st Alien Planet of New Mission". Yahoo! News. Retrieved December 19, 2014.
  4. ^ Chou, Felicia; Johnson, Michele (December 18, 2014). "NASA's Kepler Reborn, Makes First Exoplanet Find of New Mission". NASA. Release 14-335. Retrieved December 19, 2014.
  5. ^ Vanderburg, Andrew; Montet, Benjamin T.; Johnson, John Asher; Buchhave, Lars A.; Zeng, Li; et al. (December 2014). "Characterizing K2 Planet Discoveries: A super-Earth transiting the bright K-dwarf HIP 116454". arXiv:1412.5674v1 .
  6. Shore, Randy (December 18, 2014). "UBC astronomers help spot new 'waterworld' planet in our (galactic) neighbourhood". The Province. Retrieved December 18, 2014.

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