Harold Corwin

IC 675 may be the double star listed in the main table. There is certainly nothing at Javelle's position, and there is no error in his data for his nominal comparison star, BD +4 2426.

His offsets (+46.78 seconds, -2' 29.6"), though, are matched (+46.43 seconds, -1' 28.8") -- except for the error of 1 arcmin in Dec -- by the double and a 12th magnitude star that he might have used as a comparison star. That star, though, is fainter than almost all his other comparison stars. Still, the double star matches his description, and the agreement of the offsets (that pesky 1 arcmin aside) make it tempting to accept the double as IC 675.

Were it not for the fact that Javelle mentions NGC 3580 in a footnote, I might suggest that the NGC galaxy is also IC 675. But there is no star at any reasonable position that might have been the comparison star that Javelle used.

In the end, we have a possible identification, but no more.

― 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