NGC 557
DSS image of NGC 557
Overlaid DSS image of NGC 557, 30' x 30' with north at top and west to the right

Aladin viewer for the region around NGC 557
IC 1703, MCG+00-04-144, UGC 1016, PGC 5351, SDSS J012625.12-013819.2

Type  Galaxy
Magnitude  13.5
Size  0.72' x 0.49' @ 135°
Right Ascension  1h 26' 25.1"  (2000)
Declination  1° 38' 19" S
Constellation  Cetus
Description  eF, S, R, *10 nf
Classification  S0a
Observing Notes

Harold Corwin

NGC 557 = IC 1703. NGC 557 comes from Swift's 6th list, sent in pieces to Dreyer before it was published in AN 2798. The final published description reads: "eF, S; B * f 15 seconds and is n of it." This differs a bit from the NGC description: "eF, S, R, * 10 nf," but not in any significant way. The star is actually southeast, but the galaxy is still almost uniquely identified by that star. Swift's RA is nearly 50 seconds of time out, and I wonder if he made a 1 minute error in reading his circles -- a 10 or 12 second error is somewhat closer to his usual accuracy.

Bigourdan did not find NGC 557 when he looked for it at the NGC place, but he did run across it a few minutes later. Thinking it was a "nova," he listed it as new and it ended up in the IC2 at its actual position.
NGC Notes by Harold Corwin
Other Data Sources for NGC 557
Nearby objects for NGC 557
Credits...

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

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NGC 557