KOI-423 (2MASS J19475046+4602034) is a type F7IV star located at 19h 47m 50.468s +46° 02′ 03.43″. It has Kepler Object of Interest reference number 423. One known planet orbits it, KOI-423b.
Bouchy; Bonomo; Santerne; Moutou; Deleuil; Diaz; Eggenberger; Ehrenreich et al. (2011). "SOPHIE velocimetry of Kepler transit candidates III. KOI-423b: An 18 Mjup transiting companion around an F7IV star". arXiv:1106.3225 [astro-ph.EP].