Namespace globals orbital_target

simulation of a faraway orbital target (needs handover to spacecraft-specific 
code for close range)

SPDX-License-Identifier: GPL-2.0-or-later

NOTE! This copyright does *not* cover user models that use these Nasal
services by normal function calls - this is merely considered normal use
of the code, and does *not* fall under the heading of "derived work."

Thorsten Renk 2016-2019