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IC 884
IC 884
Type: lost
Mag: B=?, V=?
Size: ?
PA: ?
History and Accurate Positions for the NGC/IC Objects (Corwin 2004)
IC 884 and IC 887 were included in an appendix to the NGC, written after the main body of the catalogue had gone to press. Swift had somehow not included their positions and descriptions in the letters that he sent to Dreyer that Dreyer adopted for Swift's sixth list, finally published in its entirety while the NGC was in press.
The positions for IC 887 in the appendix and in the sixth list agree. But those for IC 884 do not: the appendix -- and the first IC -- make the RA 1m larger than Swift's sixth list. Unfortunately, there are no galaxies at either position. Nor is there one at the position of IC 887 which is claimed to be "vF, vS; nearly bet 2 sts; [GC] 3517 [N5119] nr np." There are no galaxies near southeast of N5119 that Swift could have seen.
Swift found three other galaxies the same night: NGC 3443, N3474, and N5122. With the exception of the declination for N3443 (8.3 arcmin too small), the positions for these three are not too bad. They average 7 seconds of time preceding and 0.3 arcmin south of the true positions, so give us no indication of a systematic offset. Even if we include the large declination error for N3443, we still have no real clues as to where Swift's other two objects might be.
I personally think that he found two nebulae in the fairly rich area around NGC 5070 and NGC 5072, but I've been unable to find two reasonable candidates. So, two more of Swift's "novae" have to be declared lost, at least for now.
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Favourite lists
Lacaille's catalogue
The Messier objects
Dunlop's catalogue
The Bennett objects
The Caldwell list
Named DSOs
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