Abstract
A NEW analysis which I have carried out of the complicated period changes of Satellite 1958 β2 (Vanguard) shows a correlation with three solar effects: (1) the hour angle of the Sun as reckoned from the perigee point of the orbit; (2) the 27-day variations in solar activity discovered by Jacchia1; (3) the total daily solar insolation at the latitude of perigee.
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References
Jacchia, L. G., Harvard Announcement Card 1391 (Feb. 5, 1958).
Jacchia, L. G., Smithsonian Obs. Spec. Report No. 20 (Jan. 5, 1959); Nature, 183, 526 (1959).
Jastrow, R., and Pearse, C. A., J. Geophys. Res., 62, No. 3 (1957).
Spitzer, L., ‘;The Atmospheres of the Earth and Planets’, Ed., G. P. Kuiper, 211 (Univ. of Chicago, 1951).
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WYATT, S. Solar Effects in the Motion of Vanguard . Nature 184, 351–352 (1959). https://doi.org/10.1038/184351b0
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DOI: https://doi.org/10.1038/184351b0
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