Type | Galaxy Cluster |
---|---|
Magnitude | 15 |
Size | 0.473' x 0.369' @ 105° |
Right Ascension | 12h 36' 8.2" (2000) |
Declination | 16° 38' 29" N |
Constellation | Coma Berenices |
Classification | E |
Harold Corwin
IC 3557 is a double (at least) galaxy in a compact group, which is, in turn, in a cluster. There are at least 4 companions nearby -- and on DSS (DSSR1), a defect as well. The defect, fortunately, is in an empty bit of sky just northeast of the IC object. I've included positions for the companions as at least two of these -- directly north of the brighter pair -- may be included in the image on Frost's plate from the 24-inch Bruce refractor.― 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