Description:
The equatorial to ecliptic rotation matrix is found and returned. The matrix is in the sense V(ecl) =
RMAT ∗
V(equ); the equator, equinox and ecliptic are mean of date.
Invocation
palEcmat( double
date, double rmat[3][3] )
Arguments
date = double (Given)
TT as Modified Julian
Date (JD-2400000.5). The difference between TT and TDB is of the order of a millisecond
or two (i.e. about 0.02 arc-seconds).
rmat = double[3][3] (Returned)
Rotation matrix
Copyright © 2012 Science and Technology Facilities Council.
Copyright © 2014 Cornell University.
Copyright © 2015 Tim Jenness