[amsat-bb] Bob Farquhar SK

[Peter Guelzow]

Robert W. Farquhar, PhD (1932-2015)

It is with great sadness to inform you that Robert W. Farquhar, former
flight director of the ISEE-3 mission passed away on Sept 18th, 2015.

Bob’s dissertation was key to halo orbits around libration points, which
are now used by many science missions. After redirecting the ISEE-3
mission to comet Giacobini-Ziner in 1985 he developed the trajectory
with eventually returned ISEE-3 to earth’s vicinity in 2014, where with
his assistance an international team successfully regained control of
the aging spacecraft.

Our heart goes out to his family and friends and all those who were
close to him.

Peter Guelzow, DB2OS
AMSAT-DL