Abstract
An asteroid discovered in August by C. A. Wirtanen, Lick Observatory, is described in Sky and Telescope of October. Its magnitude at the time of discovery was 15, and it is estimated that its diameter is only a few miles. Its orbit is nearly circular and lies close to that of Mars, approaching the orbit of Mars to within 6 million miles; but its least distance from the earth is about 50 million miles. Its period is nearly 2.3 years—the shortest period of any asteroid with the exception of Eros.
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An Unusual Asteroid. Nature 160, 898 (1947). https://doi.org/10.1038/160898c0
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DOI: https://doi.org/10.1038/160898c0