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Type: open cluster
Mag: B=12.84, V=12.64
Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "vF, R, outlying." He wrote of it as the second of an irregular string of nebulae and stars.
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: "Position should be 4'N of NGC position, lying between NGC 220 and 231."
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, has a star nearby and exhibits emission nebulosity. 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 11.5 mag open cluster in the SMC.
15cm - mod f cl, NErn of two w/N220. closer to m11.5 * than -20. m14.5 * on
SE side. sim res as -20 w/perhaps a doz *s mostly at threshold. wk even
concen, 40" diam. BS, 9Nov1993, LCO.
The Messier objects
The Bennett objects
The Caldwell list
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