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<TITLE>Abstract AAS 97-728</TITLE>
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<h2>AAS 97-728</h2>
<h2>TRAJECTORY DESIGN FOR THE MICROWAVE ANISOTROPY PROBE (MAP) </h2>
<h4> K.V. Richon and Dr. M. Mathews - NASA/FSFC </h4>
<h2> Abstract </h2>
MAP will be launched in 2000 to measure the cosmic background temperature differences (anisotropy) for 2 years at the L2 Sun-Earth libration point. Several trajectory designs will be presented, including a direct transfer to L2, a direct transfer to a lunar gravity assist and the baseline design, phasing loops with a lunar gravity assist. The challenge in designing the MAP trajectory lies in meeting the many constraints, including a fuel budget permitting only 100 m/s for all trajectory maneuvers. The analysis results will show that the constraints can be met several days each month from August, 2000 through February, 2001.