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Kepler-22b's radius was initially thought to be 2.4 times that of Earth, but has since been revised to 2.1 R 🜨 as of 2023. [ 6 ] [ 3 ] Its mass and surface composition remain unknown, [ 2 ] [ 7 ] with only some rough estimates established: at the time of the discovery announcement, it was known to have fewer than 124 Earth masses at the 3 ...
Kepler-22b is at a distance of 600 light-years, in the Cygnus constellation. [48] It completes one orbit around its G5V-type star every 290 days. [53] Its radius is 2.35 R ⊕ and its estimated mass, for an Earth-like density, would be 20.36 M ⊕. If the planet's atmosphere and albedo were similar to Earth's, its surface temperature would be ...
Kepler-22b: Kepler-22: G5V ... it was later found to be a subject of powerful flares that can strip a planet of its atmosphere, so it is now considered non-habitable. ...
Kepler-22b: Kepler-22 <52.8 295 600 ~4 289.8 2011 ... if the planets support a thick enough atmosphere to transfer heat to the sides facing away from the star, much ...
K2-22b (also known as EPIC 201637175 b) is an exoplanet 801 ly from Earth, rapidly orbiting the red dwarf K2-22 with an orbital period of 9.145872 hours. [2] It has a mass of 0.02 M E and a radius below 0.71 M E. [3] The planet was not detected in the K2 photometry. K2 photometry reveals the presence of an anomalous light curve consistent with ...
A diagram comparing size (artist's impression) and orbital position of planet Kepler-22b within Sun-like star Kepler 22's habitable zone and that of Earth in the Solar System Discovered in August 2011, HD 85512 b was initially speculated to be habitable, [ 140 ] but the new circumstellar habitable zone criteria devised by Kopparapu et al. in ...
Kepler-22 is a Sun-like star in the northern constellation of Cygnus, the swan, that is orbited by at least 1 planet found to be unequivocally within the star's habitable zone. It is located at the celestial coordinates : Right Ascension 19 h 16 m 52.2 s , Declination +47° 53′ 3.9″. [ 2 ]
At the size of about 2 Earth radii, it was the largest planet until 2014, which was determined to lack a significant hydrogen atmosphere. [46] [47] On 20 December 2011, the Kepler team announced the discovery of the first Earth-size exoplanets, Kepler-20e and Kepler-20f, orbiting a Sun-like star, Kepler-20.