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Kepler-22b (also known by its Kepler Object of Interest designation KOI-087.01) is an exoplanet orbiting within the habitable zone of the Sun-like star Kepler-22. It is located about 640 light-years (200 parsecs ) from Earth in the constellation of Cygnus .
The Kepler Input Catalog is a publicly searchable database of roughly 13.2 million targets used for the Kepler Spectral Classification Program and the Kepler mission. [ 236 ] [ 237 ] The catalog alone is not used for finding Kepler targets, because only a portion of the listed stars (about one-third of the catalog) can be observed by the ...
K2-18b, also known as EPIC 201912552 b, is an exoplanet orbiting the red dwarf K2-18, located 124 light-years (38 pc) away from Earth. The planet is a sub-Neptune about 2.6 times the radius of Earth , with a 33-day orbit within the star's habitable zone .
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 ]
The first important result from the Kepler Mission about TrES-2b is an extremely low geometric albedo measured in 2011, making it the darkest known exoplanet. [5] If the entire day–night contrast were due to geometric albedo, it would be 2.53%, but modeling suggests that much of this is dayside emission and the true albedo is much lower. It ...
Planet Discovery method Mass (M J) Radius (R J) Density (g/cm 3) Orbital period ()Semimajor axis ()Orbital eccentricity Year of confirmation Ref. Earth (for reference): 0.003 15
Transit-timing variation was first convincingly detected for planets Kepler-9b and Kepler-9c [13] and gained popularity by 2012 for confirming exoplanet discoveries. [14] TTV can also be used to indirectly measure the mass of the exoplanets in compact, multiple-planet systems and/or system whose planets are in resonant chains.
An image from Kepler with TrES-2b and another point of interest outlined. Celestial north is towards the lower left corner. In March 2009 NASA launched the Kepler spacecraft. This spacecraft was a dedicated mission to discover extrasolar planets by the transit method from solar orbit.