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RA: 23h 18m 14s
Dec: +10° 17′ 53.1″
Ch: MSA:1233, U2:214, SA:17
Ref: SIMBAD, Corwin
Type: galaxy, Sb
Mag: B=15.3, V=?
Size: 1.348′ x 0.794′
NGC 7594 = IC 1478. The confusion arose because Ainslie Common's position is none too good. His description, however, pinpoints the galaxy: "Faint, round, following 3 stars in a line [oriented at] 90 deg pointing to another fainter nebula south." The "fainter nebula south" is IC 5306 (which see; it was rediscovered by Kobold). I suspect that Dreyer did not include this in the NGC because of the lack of a position. That did not prevent him from including other poorly observed nebulae, however, so his decision remains a bit of a puzzle.
The RNGC (Sulentic and Tifft 1973) notes that this is a 16.0 mag galaxy. Their coded description reads STELLAR.
Steve Gottlieb notes: "17.5-inch: faint, small, elongated 2:1 ~N-S, 0.8'x0.4', broad weak concentration. The outer halo increases in size with averted vision. Brightest in quartet with IC's 5305, 5306, 5307. This galaxy is identified as IC 1478 in UGC, MCG, CGCG and RC3."
The Messier objects
The Bennett objects
The Caldwell list
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