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HIP 116454 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 jointly by the NASA Kepler spacecraft and the Canadian MOST satellite, 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 normal Kepler designation due to not being located in the original Kepler field.

HIP 116454 b was discovered from engineering data set which was preformed in preparation of full subsequent campaigns. Unlike most other Kepler planets, only a single transit event of HIP 116454 b was detected. In addition to MOST satellite, the transit had to be followed up by radial velocity measurements.

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

References

1. Overbye, Dennis (December 19, 2014). "Kepler Spacecraft Finds New 'Super-Earth' 180 Light-Years Away". The New York Times. Retrieved December 19, 2014.
2. Wall, Mike (December 18, 2014). "NASA's Kepler Spacecraft Finds 1st Alien Planet of New Mission". Yahoo! News. Retrieved December 19, 2014.
3. Shore, Randy (December 18, 2014). "UBC astronomers help spot new 'waterworld' planet in our (galactic) neighbourhood". The Province. Retrieved December 18, 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 (December 17, 2014). "Characterizing K2 Planet Discoveries: A super-Earth transiting the bright K-dwarf HIP 116454". Retrieved January 16, 2015.

Further reading

• 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:1412.5674. {{cite arXiv}}: Unknown parameter |bibcode= ignored (help); Unknown parameter |version= ignored (help)

External links

• HIP 116454 at SIMBAD
• HIP 116454 at Extrasolar Planets Encyclopaedia

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