Harold Corwin

IC 199 = IC 1778. When the same galaxy is discovered twice by the same observer, it is usually by one whose positions are not very good (e.g. Lewis Swift has quite a few objects in his lists that he "discovered" more than once). It is rather unusual that Javelle, who measured everything he found micrometrically, should list the same object as new in two different lists.

Yet that is what he has done. When his observations are reduced, they fall within about a dozen seconds of each other, and both point unmistakeably to the same galaxy. Even more curiously, on the second night (29 Jan 1897), he noted that he also remeasured another of his "novae," IC 198, from the first night (15 Dec 1892). Yet he did not recognize that his observations of the object in question were in fact for the same object. Curious indeed, but there it is.

― IC Notes by Harold Corwin

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