Harold Corwin

Stewart notes his position as "approximate", probably because of the far southern declination (he has the same comment on IC 4545 which is half a degree north). The identification is nevertheless secure as his description "vF cl, 4' diam, 3 F sts inv in cl, pos approximate, susp[ected]." Stewart's diameter is correct for the core of the cluster, and the three stars are there.

The position, as for most of the Galactic globulars, is not as well-determined as for the majority of the galaxies. However, the center of the core can be pretty well pinned down, and the positions of Stewart's three stars -- all likely foreground of the cluster, by the way -- are well-determined.

This is one of just a handful of Galactic globular clusters in the IC; most -- at least those not obscured by the dust of the Milky Way -- are striking visually, so are included in the NGC.

― IC Notes by Harold Corwin

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