Independent analysis of the orbits of Pioneer 10 and 11

Details Independent analysis of the orbits of Pioneer 10 and 11 Independent analysis of the orbits of Pioneer 10 and 11

2009-01-22

arxiv.org/abs/0901.3466v1

Int.J.Mod.Phys.D18:717-741,2009

Physics

Space Physics

22 pages, 5 figures; accepted for publication in IJMPD

Scientific paper

10.1142/S0218271809014728

Independently developed orbit determination software is used to analyze the orbits of Pioneer 10 and 11 using Doppler data. The analysis takes into account the gravitational fields of the Sun and planets using the latest JPL ephemerides, accurate station locations, signal propagation delays (e.g., the Shapiro delay, atmospheric effects), the spacecrafts' spin, and maneuvers. New to this analysis is the ability to utilize telemetry data for spin, maneuvers, and other on-board systematic effects. Using data that was analyzed in prior JPL studies, the anomalous acceleration of the two spacecraft is confirmed. We are also able to put limits on any secondary acceleration (i.e., jerk) terms. The tools that were developed will be used in the upcoming analysis of recently recovered Pioneer 10 and 11 Doppler data files.

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