palNut
palNut
- Form the matrix of nutation
- Description:
- Form the matrix of nutation for a given date using
the IAU 2006 nutation model and palDeuler.
- Invocation:
- void palNut( double date, double rmatn[3][3] );
- Arguments:
-
-
date = double (Given)
-
TT as modified Julian date (JD-2400000.5)
-
rmatn = double [3][3] (Returned)
-
Nutation matrix in the sense v(true)=rmatn
v(mean)
where v(true) is the star vector relative to the
true equator and equinox of date and v(mean) is the
star vector relative to the mean equator and equinox
of date.
- Notes:
- Uses iauNut06a via palNutc
- The distinction between TDB and TT is negligible. For all but
the most critical applications UTC is adequate.