Type | Non-Existent |
---|---|
Magnitude | 14.5 |
Size | 2.2' x 1.6' @ 90° |
Right Ascension | 2h 49' 45.6" (2000) |
Declination | 46° 58' 35" N |
Constellation | Perseus |
Description | eF, pS, R, v diffic, 2nd of 3 |
Classification | E/S0 |
Object Note
Sep 9, 2020
There is considerable disagreement in the identification of this object and IC 256 thus the relevant conflicting notes are included here
Courtney Seligman
Per Dreyer, IC 257 (Swift list VIII (#3), 1860 RA 02 40 30, NPD 43 36.1) is "extremely faint, pretty small, round, very difficult, 2nd of 3", the others being IC 256 and 260. As noted in the entry for IC 256 (which see for the gory details), IC 257 is probably a nonexistent object (with the precessed position listed above), but is usually (almost certainly erroneously) listed as PGC 10729 (which is probably actually IC 256). Given that, readers who prefer to accept the identification as PGC 10729 should refer to the PGC entry, immediately following.― Courtney Seligman, Celestial Atlas
Harold Corwin
This was seen by WH in 1786, but never published. Also see IC 256 where this figures in that galaxy's identification.― IC Notes by Harold Corwin
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
A complete list of credits and sources can be found on the about page