Abstract
ECLIPSE OF RHEA BY TITAN.—The computing section of the British Astronomical Association, recently formed under the directorship of Mr. L. J. Comrie, undertook an extensive examination of the phenomena of Saturn's ring and satellites about the time when their planes are turned edgewise. In the course of this work the prediction was made that the very rare phenomenon of the eclipse of Rhea by the shadow of Titan would take place on April 8. A number of members of the association, including the president, Major Hepburn, observed the phenomenon, and found a satisfactory accord with the prediction. Rhea faded rapidly at loh. 22m., and became invisible for 50 minutes; the estimated time of mid-eclipse was loh. 47.3m. G.M.T.; the corresponding predicted time was zoh. 38m., and predicted duration 44 minutes. Since the relative motion of the satellites was slow the error in their positions is small.
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Our Astronomical Column. Nature 107, 345 (1921). https://doi.org/10.1038/107345a0
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DOI: https://doi.org/10.1038/107345a0