Computer Science
Scientific paper
May 1963
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1963saosr.125.....j&link_type=abstract
SAO Special Report #125 (1963)
Computer Science
5
Scientific paper
The atmospheric drag of the Explorer 9 satellite was derived over an interval of 283 days by using, for the first time, precisely reduced photographs taken with the Baker-Nunn cameras; the positions are about 40 times more accurate than those used in previous drag work. The 12-hour oscillations in the mean anomaly caused by the ellipticity of the earth's equator are very noticeable and had to be eliminated as a prerequisite to the analysis. Forty-six atmospheric perturbations related to geomagnetic disturbances can be recognized during the time covered by the observations, on the average one every 6 days. The increase ΔT in the atmospheric temperature that accompanies a geomagnetic disturbance is linearly correlated with the 3-hourly geomagnetic index ap; the maximum atmospheric perturbation occurs systematically 5 hours later than the ap maximum.
Jacchia Luigi G.
Slowey Jack
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