NGC 2266 (also OCL 471) is a magnitude +9.5 old open cluster consisting of evolved red supergiant stars, located about 10700 light years away in the constellation Gemini. The cluster can be found less than two degrees north of 27 epsilon Geminorum.
The cluster was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) reflecting telescope at Clayhall Farm House in Old Windsor on the 7th December 1785.
Right Ascension 06h 43m 19.2s, Declination +26° 58' 10"
