| 词条 | K2-3b |
| 释义 |
| name = K2-3b | discovery_site = Kepler Space Observatory | discovered = 2015 | discovery_method = Transit | apsis = astron | semimajor = {{val|0.0777|0.0024|0.0026}} AU | eccentricity = 0.060±0.060[1] | period = {{val|10.05454|0.00003}} d | inclination = {{val|89.59|+0.24|-0.40}}[1] | semi-amplitude = {{val|2.7|0.4}} | star = K2-3 | mean_radius = {{val|2.29|0.23}} {{Earth radius|link=y}} | mass = {{val|6.6|1.1}} {{Earth mass|link=y}} | density = {{val|3.0|1.3|0.9}} g cm−3 | single_temperature = {{convert|454|K|C F}} }}K2-3b also known as EPIC 201367065 b is an exoplanet orbiting the red dwarf K2-3 every 10 days.[1][2] It is the largest and most massive planet of the K2-3 system, with about 2.3 times the radius of Earth and almost 7 times the mass. Its density of about 3.0 g/cm3 indicates a composition of almost entirely water, or a hydrogen envelope comprising 0.7% of the planet's mass. References1. ^1 2 {{cite web | url=http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=K2-3+b&type=CONFIRMED_PLANET | title=K2-3 b CONFIRMED PLANET OVERVIEW PAGE | work=NASA Exoplanet Archive | accessdate=2015-10-17}} 2. ^http://exoplanet.eu/catalog/K2-3_b/ }}{{K2-3}}{{2015 in space}}{{extrasolar-planet-stub}} 4 : Exoplanets discovered in 2015|Transiting exoplanets|K2-3 system|Exoplanets discovered by K2 |
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