Harold Corwin

IC 3791 = NGC 4695. Swift found the IC object on 23 May 1897. That same night, he found two other objects: IC 2976 and IC 4205 (both of which see). IC 2976 is NGC 3979, and IC 4205 is IC 853. For IC 3791, he notes "[NGC] 4732 in field." That can't be right as NGC 4732 is 1.5 degrees south of Swift's position for IC 3791. (The galaxy in the field is actually NGC 4686). This was not a particularly good night for Lewis Swift.

His position for IC 3791 shares with that for IC 4205 a declination which is about five arcmin too far north; the right ascensions are very close to correct in both cases. (IC 2976, on the other hand, has a declination that is very close to the modern value, while its RA is 1.5 minutes too small.) Since his descriptions are also appropriate for the galaxies, I have little doubt about the identities I've suggested here.

― IC Notes by Harold Corwin

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