In order to predict the future position of a satellite, you must first indicate the time that you wish to observe it. Let's set this time to 00:19:51.670 UTC December 18, 2007, which corresponds to a routine CASTOR image taken of the GlobalStar M047 satellite: t = 00:19:51.670 UTC December 18, 2007 The propagation time (Dt) is the time elapsed from the Epoch time (t_{o}) to our chosen time (t). In other words, Dt is the difference between the two times (t - t_{0}): Propagation Time = Dt = t - t_{0} Dt = 1.7677141 solar days |
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Step 2: Selecting Propagation Time Was Last Modified On January 03, 2012 |