Lewis Swift found IC 1487 = Sw. IX-99 on 15 Oct 1887 and reported "eeeF; pS; R; 8m * f; F * nr. nf; not [GC] 4659." His position is 1' NE of CGCG 431-056, the second brightest cluster in the core of Abell 2593. But there is no "faint star near north-following", though there is one northwest. Herbert Howe assumed CGCG 431-056 was IC 1487 in his survey of NGC/IC nebulae, though Corwin suggests that Swift more likely picked up NGC 7649, the brightest member, which he discovered the previous year, as NGC 7649 is a better fit with the description.

400/500mm - 17.5" (8/22/98): this member of AGC 2593 was not noticed initially as it is squeezed between two mag 13-14 stars within 30" to the south and to the E. Appears as a very faint, unconcentrated glow just 15" in diameter. Located 5' ESE of NGC 7649.

17.5" (7/19/90): very faint, extremely small, round. A mag 14 star is just off the south edge 20" SSW of center and a second mag 14 star is 30" E of center. Forms a pair with NGC 7649 5.1' WNW. Second brightest of five in AGC 2593. This galaxy is possibly IC 1487 (identified by Howe).

Notes by Steve Gottlieb