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James A. Van Allen lab journal, September 1959-January 1961
Page 15
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17 October 1959 The paddlewheel satellite Explorer VI (launched at 14:23 U.T. / 6 August 1959) Satellite 1959 delta (official) [crossed out "[epsilon? upsilon?]"] apogee altitude : 26,400 miles perigee altitude : 157 miles Expected to transmit for a year, but actually stopped on 6 October (2 months!)
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17 October 1959 The paddlewheel satellite Explorer VI (launched at 14:23 U.T. / 6 August 1959) Satellite 1959 delta (official) [crossed out "[epsilon? upsilon?]"] apogee altitude : 26,400 miles perigee altitude : 157 miles Expected to transmit for a year, but actually stopped on 6 October (2 months!)
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