Abstract AAS 97-728

AAS 97-728

TRAJECTORY DESIGN FOR THE MICROWAVE ANISOTROPY PROBE (MAP)

K.V. Richon and Dr. M. Mathews - NASA/FSFC

Abstract

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.