Assertion: parameter | /r/HasProperty | necessary
Facets:
value: given an inertial frame of reference
type: OTHER
value: given an arbitrary epoch
type: OTHER
Source sentences:
text: Given an inertial frame of reference and an arbitrary epoch (a specified point in time), exactly six parameters are necessary to unambiguously define an arbitrary and unperturbed orbit.
text: Here, only four parameters are needed (two translations, one scaling, one rotation).
text: This parameter is necessary when the standby database uses different path names from the primary database.