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RA: 01h 56m 24.17s
Dec: +05° 37′ 36.1″
Ch: MSA:241, U2:174, SA:10
Type: galaxy (in pair), E
Mag: B=14.8, V=?
Size: 0.158′ x 0.1′
Synonyms: H II-272
Discovered in 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "Two, very close, not far from lying on a parallel to the declination. The following [NGC 742] smallest and most north." Dreyer notes: "Observed three times by H, but he only once saw it double. The following one is very slightly south of the preceding one." The NGC calls it "vF, vS, R, sbM, f or 2."
An observer using the 72-inch f/8.8 speculum telescope at Birr Castle noted "Double nebula [NGC 741 & NGC 742]; the preceding one is pB, R, bM. The following one is smaller and fainter, and lbM."
The RNGC (Sulentic and Tifft 1973) notes that this is a 15.0 mag galaxy. Their coded description reads E,R,BM,INCONTW/741.
The Messier objects
The Bennett objects
The Caldwell list
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