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Type: galaxy (in group), Sa
Mag: B=15.5, V=?
Size: 1.023′ x 0.257′
NGC 6419, 6420, 6422, and 6423. These were found by Lewis Swift on the nights of 1 and 17 August 1883. Because he recorded only two objects each night, I suspect that he saw the same two twice. If so, N6419 = N6423, and N6420 = N6422. His descriptions are similar enough that this is a distinct possibility.
However, Bigourdan measured the four brightest galaxies in the field (there are at least six others brighter than about B = 16 nearby), and assigned the NGC numbers to them in RA order. This has the advantage of dishing out one number per galaxy, and of closely matching Swift's declinations. Swift's RAs, however, are too small by varying amounts (13 to 24 seconds of time). Also, if Bigourdan's suggested identifications are correct, then Swift's note of a "* near east" of N6423 should read, "* near north."
Since Dreyer published Bigourdan's corrected positions (close to the real ones) in the IC2 notes, I'm going to accept Bigourdan's suggested identities, in spite of my reservations above.
The RNGC (Sulentic and Tifft 1973) notes that this is a 15.5 mag galaxy. Their coded description reads SPN,BM.
The Messier objects
The Bennett objects
The Caldwell list
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