Abstract
COMET 1917a (MELLISH)—The following revised ephemeris for this comet, based upon a new orbit calculated from observations made on March 21, April 4. and April 20, has been received from Copenhagen—
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Our Astronomical Column . Nature 99, 233–234 (1917). https://doi.org/10.1038/099233a0
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DOI: https://doi.org/10.1038/099233a0