public subroutine nu2000k(date1, date2, dpsi, deps)
Nutation, IAU 2000A model (MHB_2000 without FCN) MODIFIED. Series
truncated for speed of execution, and using Simon et al. (1994)
fundamental arguments throughout. Accuracy, compared to
IAU 2000 A series, is 0.1 mas in delta psi and 0.04 mas in
delta epsilon and delta psi sin(epsilon) over 6 centuries
centered at year 2000 (99% of errors less than these values).
Modified form of NU2000A, by Pat Wallace, given in subroutine annex
to Chapter 5 of IERS Conventions (2003).
Given:
DATE1,DATE2 d TT date (JD = DATE1+DATE2)
Returned:
DPSI,DEPS d nutation (luni-solar + planetary, radians)
This revision: 2002 November 25
2004 March 1 (by G. Kaplan)
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Nodes of different colours represent the following:
Solid arrows point from a procedure to one which it calls. Dashed
arrows point from an interface to procedures which implement that interface.
This could include the module procedures in a generic interface or the
implementation in a submodule of an interface in a parent module.