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Published online by Cambridge University Press: 04 August 2017
IC 10 is seen optically as a patchy nebulosity, approximately 3 × 4 arcmin in size, possibly heavily obscured due to its low (−3°) Galactic latitude. De Vaucouleurs and Freeman (1972) have classified it as a Magellanic barred irregular. With a heliocentric radial velocity of −350 km/sec, its distance is uncertain, and various investigators have placed it as far away as 3, and as near as 1 Mpc (Bottinelli et al., 1972; Roberts, 1962). For the latter value, IC 10 would be a Local Group member.