Abstract
AN observation with my 10-inch reflector, power 252, on August 5, 1888, showed the red spot passing the planet's central meridian at about 7h. 48m. Comparing this with the first observation I obtained of this object during the present opposition, viz. on December 28, 1887, at 20h. 23m., I find that the rotation-period of the spot during the 220d. 11h. 25m. elapsed during the period referred to was 9h. 55m. 40.34s. (533 rotations), which is slightly less than what I derived from the preceding opposition, 1886–87, when the figures were 9h. 55m. 40.5s. (609 rotations).
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DENNING, W. The Red Spot on Jupiter. Nature 38, 342 (1888). https://doi.org/10.1038/038342c0
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DOI: https://doi.org/10.1038/038342c0
