Harold Corwin

IC 1128 is probably IC 1125 with a 5 minute error in RA and a 5 arcmin error in declination. IC 1125 is about a magnitude brighter, and considerably larger, than the galaxy that CGCG took (CGCG 022-018 = UGC 9939). That is close to Swift's RA, but is 12 arcmin to the north, an unusual error for Swift to make.

In addition, UGC 9939 has a fairly close companion of nearly the same brightness just a couple of arcmin southwest. If Swift could see UGC 9939 and call it "pF, pS, R", he almost certainly could have seen CGCG 022-017 just as easily. But he makes no mention of it. In addition, there are to the south of this pair two fairly bright stars in the field that Swift might well have put into his description, too.

All in all, it seems considerably more likely to me that IC 1125 is also IC 1128. I've left it and UGC 9939 in the main table, however, on the off chance that Swift might have picked up the fainter galaxy. For an example where he almost surely did find a fainter object rather than a brighter one, see IC 997 and IC 998.

I note here that Gary Kronk favors the 12-arcminute error that leads to UGC 9939. He adds, "... [CGCG 022-017] is small enough that it initially looks like a star" with his telescope. This is enough for me to change the double question mark on this suggested identification to a simple colon. I still favor the IC 1125 explanation, but cheerfully accept that it could well be incorrect.

― IC Notes by Harold Corwin

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