Orbit 32318

Movie for orbit 32318

This is a noon-midnight orbit that traverses the South Atlantic Anomaly region in eclipse; the spacecraft pointing strategy is "j-perp", with no ram avoidance constraint. The behavior of the spacecraft is simplified by the removal of the ram constraint; except for periods in coast mode, the spacecraft is able to maintain the desired angles between the instrument pointing direction and the magnetic field vector or its projection into the sun-normal plane. There are a couple of times when the spacecraft spins rapidly to as the magnetic field comes close to the sunline and its projection on the sun-normal plane shortens and rotates rapidly, but there are none of the 180° flips when the equator is crossed in the low-field region.

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new 9 March 1999

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