Re: New Sputnik Documentary

Jim Oberg wrote:

Don't forget that it was not possible to make sightings predictions with any accuracy,
since even the nodal regression rate was unknown until actually observed and measured.

By November, though, predictions for Sputnik-2 were close enough to make it worth
going out and looking -- plus it had the advantage of flashing slowly as the booster
tumbled, so you couldn't easily confuse it with an airplane. I saw it at least once.

Here's an account of how the doppler shift of the Sputnik-I radio beacon was used to calculate the orbit, followed by an audio (wav) recording.

http://sd-www.jhuapl.edu/Transit/sputnik.html

http://www.amsat.org/amsat/features/sounds/sputnk1b.wav
.

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