getelem can be used to parse TLEs into a representation that can be used to compute state.
Parse the “lines” of a two-line element set, returning the elements in units suitable for use in SPICE software.
getelem returns a
STwoLineElements value, as
STwoLineElements value as input. This is the return value of
ev2lin action computes a state variable and returns it as a
This routine evaluates NORAD two-line element data for near-earth orbiting spacecraft (that is spacecraft with orbital periods less than 225 minutes).
This action returns a
ev2lin requires this value, which is obtained by
getgeophs from kernel pool variables, as input. Earth’s geophysical constants are located in Kernel data file
geophysical.ker located here.