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NGC 7459 is probably the double cD galaxy in a poor cluster of galaxies. Swift found only three galaxies on the night of 14 October 1884 -- this, NGC 7452 (which see) about 20 seconds of time preceding it, and NGC 7455 (also which see) about half a degree north. Assuming reasonable identifications for the three, Swift's RA's are well off for all the objects (-21s for N7452, -38s for N7455, and -29s for N7459), though his declinations are within 30 arcsec in each case.
For this particular object, his position and description relative to N7452 fit reasonably well. This is "eeF, pL, R; * nr; sf of 2," while N7452 is "eeeF, pL, R, e diff; np of 2." Since Howe apparently saw this when he examined the field; he "suspected another nebula preceding about 15 seconds;" this was most likely NGC 7452, the second brightest object in the cluster. See it and NGC 7455 for more about the field.
The RNGC (Sulentic and Tifft 1973) notes that this is a nonexistent object. Their coded description reads NF S.
The Messier objects
The Bennett objects
The Caldwell list
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