William Herschel discovered NGC 2260 = H VIII-48 = h398 on 1 Jan 1786 (sweep 506) and noted "A Cl of very scattered stars of various sizes, of more than 1/2 degree of extent." On 23 Nov 1827 (sweep 107) John Herschel reported, "very course, v poor, v straggling, the chief *8 taken." His position corresponds with mag 8.2 SAO 133505 at 06 38 05.8 -01 26 40. Karl Reinmuth gave an approximate size of 15' with description "Cl, pL, P, st 8..." based on its photographic appearance on Heidelberg plates. The group is not included in the Lynga cluster catalogue and RNGC classifies it as nonexistent (Type 7).

400/500mm - 17.5" (2/1/03): roughly 50 stars are visible at 100x spread out over 15'. The stars are in two main subgroups, oriented SW and NE. The SW group includes mag 8.0 SAO 133489 with a rich arc of stars trailing to the north. The NE group is highlighted by mag 7.1 SAO 133505 with a nice 20" mag 11/12 double 1.5' SSE. Also an isolated mag 8.3 star is at the southern vertex of an obtuse triangle with these two groups. Listed as nonexistent in the RNGC.

Notes by Steve Gottlieb