Abstract
COMET 1889 d (BROOKS, JULY 6.)—The following elements and ephemeris for this object are by Herr Otto Knopf (Astr. Nach., No. 2916):—
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Our Astronomical Column. Nature 40, 424 (1889). https://doi.org/10.1038/040424a0
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DOI: https://doi.org/10.1038/040424a0