| 词条 | Kepler-440b | ||
| 释义 |
| name = Kepler-440b | discovery_site = Kepler Space Observatory | discovered = 2015[1] | discovery_method = Transit | apsis = astron | semimajor = {{convert|0.24200|AU|km|abbr=on}} | eccentricity = >0.340 | period = 101.11141000 d | inclination = 89.930 | star = Kepler-440 | mean_radius = 1.860 {{Earth radius|link=y}} | single_temperature = {{convert|273|K|C F}}.[2] }}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 {{convert|261|pc|ly|disp=flip}} from Earth. 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.[3] Confirmed exoplanet{{Planetary radius| align = right | base = Earth | Exoplanet = Kepler-440b | radius = 186 }} 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. HabitabilityThe 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.
See also
References1. ^{{cite web |author=Staff |title=Planet Kepler-440 b |url=http://exoplanet.eu/catalog/kepler-440_b/ |date=2015 |work=The Extrasolar Planets Encyclopaedia |accessdate=11 January 2015 }} 2. ^{{Cite web|url = http://phl.upr.edu/projects/habitable-exoplanets-catalog/data|title = HEC: Data of Potential Habitable Worlds}} 3. ^1 {{cite web |last1=Clavin |first1=Whitney |last2=Chou |first2=Felicia |last3=Johnson |first3=Michele |title=NASA's Kepler Marks 1,000th Exoplanet Discovery, Uncovers More Small Worlds in Habitable Zones |url=http://www.jpl.nasa.gov/news/news.php?release=2015-003 |date=6 January 2015 |work=NASA |accessdate=6 January 2015 }} }} External links{{Commons category|Kepler Mission}}
4 : Exoplanets discovered by Kepler (spacecraft)|Exoplanets discovered in 2015|Super-Earths in the habitable zone|Transiting exoplanets |
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