Harold Corwin

NGC 5488 = IC 4375. John Herschel's position in the CGH Observations is crude (14 01+-, 122 50+- for 1830.0), yet he gave it in GC to his usual precision of 0.1 seconds and 0.1 arcseconds. He did list the number of observations as "1::", but this did not make it to the NGC. Dreyer did his usual rounding, too, so the NGC position is apparently nomally accurate to one or two arcminutes.

The only reason we can be fairly sure about the identification is John Herschel's note "near and to the north of a * 8 m." The star is there, and Stewart also comments on it: "cB,[sic] * sp" (I think the comma is a typo). In any event, there is nothing at John Herschel's position, and the identity with the IC object is sure.

― NGC Notes by Harold Corwin

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