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Type: galaxy
Mag: B=15, V=?
Size: 0.707′ x 0.309′
PA: 12°
IC 4394. There is nothing at Bigourdan's position, which is about six arcmin north-northwest of NGC 5541. He has only one measurement of the position, refered to AGK1 (Bonn) 9350 = SAO 064040. His table has the RA of this star 10 seconds too large, but that does not help us find his nebula.
In the immediate area, there are no galaxies at similar offsets from other stars of similar brightness. Wolfgang has put the IC number on MCG +07-29-058, but this is 3 arcmin off of Bigourdan's position and does not match his measured position angle and distance at all. I suspect he misidentified his comparison star, but with no candidates in the area, this remains only a suspicion.
A check of Bigourdan's supplemental observations and his errata lists turned up no more information on this object, so this observation will probably remain a mystery.
Lacaille's catalogue
The Messier objects
Dunlop's catalogue
The Bennett objects
The Caldwell list
Named DSOs
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