Kepler-440b Knowpia

Kepler-440b^[1]
Discovery
Discovery site	Kepler Space Observatory
Discovery date	2015
Detection method	Transit
Orbital characteristics
Semi-major axis	0.24200 AU (36,203,000 km)
Eccentricity	>0.340
Orbital period (sidereal)	101.11141000 d
Inclination	89.930
Star	Kepler-440
Physical characteristics
Mean radius	1.860 R🜨
Temperature	273 K (0 °C; 32 °F).

Kepler-440b (also known by its Kepler Object of Interest designation KOI-4087.01) is a confirmed super-Earth exoplanet orbiting within the habitable zone of Kepler-440, about 850 light-years (261 pc) from Earth.^[1] The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. NASA announced the confirmation of the exoplanet on 6 January 2015.^[4]

Confirmed exoplanet edit

Kepler-440b is a [super-Earth] with a radius 1.86 times that of Earth. The planet orbits Kepler-440 once every 101.1 days.^[1]

Habitability edit

The planet was announced as being located within the habitable zone of Kepler-440, a region where liquid water could exist on the surface of the planet.^[1]

Notable Exoplanets – Kepler Space Telescope
Confirmed small exoplanets in habitable zones. (Kepler-62e, Kepler-62f, Kepler-186f, Kepler-296e, Kepler-296f, Kepler-438b, Kepler-440b, Kepler-442b) (Kepler Space Telescope; 6 January 2015).^[4]

Size comparison
Earth	Kepler-440b

References edit

^ ^a ^b ^c ^d Torres, Guillermo; Kipping, David M.; Fressin, Francois; Caldwell, Douglas A.; Twicken, Joseph D.; Ballard, Sarah; Batalha, Natalie M.; Bryson, Stephen T.; Ciardi, David R.; Henze, Christopher E.; Howell, Steve B.; Isaacson, Howard T.; Jenkins, Jon M.; Muirhead, Philip S.; Newton, Elisabeth R.; Petigura, Erik A.; Barclay, Thomas; Borucki, William J.; Crepp, Justin R.; Everett, Mark E.; Horch, Elliott P.; Howard, Andrew W.; Kolbl, Rea; Marcy, Geoffrey W.; McCauliff, Sean; Quintana, Elisa V. (2015). "Validation of Twelve Small Kepler Transiting Planets in the Habitable Zone". The Astrophysical Journal. 800 (2): 99. arXiv:1501.01101. Bibcode:2015ApJ...800...99T. doi:10.1088/0004-637X/800/2/99. S2CID 8512655.
^ Staff (2015). "Planet Kepler-440 b". Extrasolar Planets Encyclopaedia. Retrieved 11 January 2015.
^ "HEC: Data of Potential Habitable Worlds". Archived from the original on 1 June 2012. Retrieved 25 January 2015.
^ ^a ^b Clavin, Whitney; Chou, Felicia; Johnson, Michele (6 January 2015). "NASA's Kepler Marks 1,000th Exoplanet Discovery, Uncovers More Small Worlds in Habitable Zones". NASA. Retrieved 6 January 2015.