NGC/IC Project Restoration Effort

===== NGC 4557 is a triple star. Bigourdan did not provide a precise micrometric offset for this object, but his approximate offset with respect to NGC 4558 (-3 seconds of time, +2.8 arcmin), combined with his description ("Trace of nebulosity which may be accompanied by a star...") clearly identifies the triple as the object which he saw. The MCG and PGC identifications are wrong. Wolf's identification in the Konigstuhl Nebel-List No. 4 is correct, where he calls it stellar and places it between two stars (he obviously resolved the triple while Bigourdan did not). The GSC includes 2 of the three stars, one being the central one measured by Wolf. The position that I adopted some time ago for N4557 is for this central star. Now (April 2015) with positions for all three stars in hand, I've adopted my usual mean value.