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Early missions to cometsTwo specific early missions to the comets Grigg-Skjellerup in 1977 and Encke in 1980 are proposed as precusor missions to Encke rendezvous and Halley intercept in 1986. The mission guidelines and principal objectives are presented. The spacecraft IMP was chosen for the flythrough mission for Grigg-Skjellerup in 1977, and the Helios spacecraft for the Encke mission in 1980. The mission trajectories are summarized in graphs.
Document ID
19720025160
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Farquhar, R. W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ness, N. F. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 2, 2013
Publication Date
August 1, 1972
Subject Category
Space Sciences
Report/Patent Number
NASA-TM-X-66026
X-690-72-347
Report Number: NASA-TM-X-66026
Report Number: X-690-72-347
Accession Number
72N32810
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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