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WikiPedia: Cha_110913-773444 http://jumk.de/astronomie/exoplanets/cha-110913-77... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Cha... http://www.nasa.gov/vision/universe/starsgalaxies/... https://web.archive.org/web/20080613202416/http://...