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RA: 00h 43m 37.57s
Dec: −73° 26′ 37.9″
Ch: MSA:502, U2:460, SA:24
Type: open cluster
Mag: B=12.1, V=?
Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "pL, vF, R, vgbM; (in a sweep below the pole and ill seen.)" On a second occassion he called it "a binuclear nebula, or two, vS, R, running together." His third observation was recorded as "a small irresolvable knot in the bright part of the Nubec. Min." See also the entry for NGC 241.
Lindsay, E. M. "Note on NGC and IC objects in the Small Magellanic Cloud" IAJ, Vol 6. p 2-3. From 30-minute 103a-O ADH plates: "[NGC 241 & NGC 242] These seem to be the same. A slight appendage of two of three unresolved stars SE of and attached to NGC 241 may give the impression of two objects."
Kron, G. E. (1956) Star Clusters in the Small Magellanic Cloud: I. Identification of 69 Clusters. PASP, Vol. 68. [1956PASP...68..125K]
Describes it as a blue cluster, noting the presence of bright blue giant stars. He notes that it is concentrated towards the centre and exhibits emission nebulosity. He adds that it is a double cluster. Lindsay ("Clusters in the Small Magellanic Cloud", Irish Astronomical Journal, Vol. 4, 1956) classifies it as an open cluster.
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.0 mag open cluster in the SMC.
15cm - mod f @ 80x. 140x: elong ESE-WNW, 30"x20". two m13.5 *s plus a few
others and haze. BS, 9Nov1993, LCO.
11x80: 1997-10-09, 02:30, Jonkershoek, seeing 3, transparency 3, darkness 3 "Not found."
The Messier objects
The Bennett objects
The Caldwell list
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