Harold Corwin

IC 142 is one of the knots in M 33 that Bigourdan found on the night of 28 October 1889. On Sky Survey images, it is elongated southwest to northeast, with the northeastern end being somewhat larger and brighter. The positions for both ends are included in my position list, as well as the adopted position for the whole knot. The various automated digital sky surveys put the center at slightly different positions depending on how much of the background they pick up. While I've chosen the USNO-B1.0 position as being pretty representative of the whole knot, the place from the Northern APM survey would do just as well. That from the UCAC scans clearly fits the northeastern end better.

― IC Notes by Harold Corwin

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