Abstract
THE PLANET JUPITER.—This brilliant object now rises at about 8 p.m., and is visible during the whole of the night which follows. Its position is between the stars δ and ζ in Gemini, and, the north declination being 22½, the planet remains above the horizon during 16¼ hours. During the coming winter it will be very favourably situated for telescopic observation. Mr. Denning states that the great red spot continues faintly visible south of the hollow or bay in the south equatorial belt, and the former objects have exhibited an increasing velocity since 1900, when the rotation period was 9h. 55m. 41.5s. In the present year between May and August the period had declined to 9h. 55m. 31.4s., as determined by Mr. F. Sargent, of Bristol, from observations by the Rev. T. E. R. Phillips and himself. On May 12 the longitude of the red spot was 45°, and on August 9 25°.
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Our Astronomical Column . Nature 102, 174 (1918). https://doi.org/10.1038/102174a0
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DOI: https://doi.org/10.1038/102174a0