IC 4317
DSS image of IC 4317
Overlaid DSS image of IC 4317, 30' x 30' with north at top and west to the right

Aladin viewer for the region around IC 4317
NPM1G +27.0424, PGC 87672, SDSS J134145.82+270622.8

Type  Galaxy
Magnitude  14.7
Size  0.323' x 0.207' @ 15°
Right Ascension  13h 41' 45.8"  (2000)
Declination  27° 6' 23" N
Constellation  Boötes
Classification  Sa
Observing Notes

Harold Corwin

IC 4317 is sometimes taken to be the brighter CGCG 161-122 six arcmin south of Javelle's position. But when his position is re-reduced with respect to the AC 2000.2 position for his comparison star, BD +27 2283, it falls within five arcseconds of the nucleus of the fainter northern object. There is no doubt about which galaxy Javelle saw.

It probably has a higher surface brightness than the larger, brighter galaxy to the south. So, this is a well-documented case where a visual observer missed a brighter object, but picked up a fainter one nearby.
IC Notes by Harold Corwin
Other Data Sources for IC 4317
Nearby objects for IC 4317
Credits...

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

IC 4317