FIELD NUMBERS AND DESCRIPTIONS

Fields 07 are REQUIRED.
0 Typically E for EarthFixed, I for Inertial, B for bodyfixed.
Note that nothing inherently limits this to a single character
in order to allow for more descriptive or exact coordinate systems.
1 Name of object (satellite, station, ??? ); whitespace is not
allowed in the name.
2 Integer (t_i) seconds past J2000GPS. To get GPS seconds past GPS
week 0 second 0, ( 6JAN1980 00:00:00.0000), add 630763200; we
assume this is a signed int in C++.
3 Float seconds (t_f) past t_i, double for C++.
4 Unit attitude quaternion, scalar component
5 Unit attitude quaternion vector, i component
6 Unit attitude quaternion vector, j component
7 Unit attitude quaternion vector, k component
