THIS SUBROUTINE COMPUTES THE INTERMEDIATE RIGHT ASCENSION OF THE EQUINOX AT JULIAN DATE TJD, USING AN ANALYTICAL EXPRESSION FOR THE ACCUMULATED PRECESSION IN RIGHT ASCENSION. FOR THE TRUE EQUINOX THE RESULT IS THE EQUATION OF THE ORIGINS.
TJD = TDB JULIAN DATE (IN)
K = EQUINOX SELECTION CODE (IN)
SET K=0 FOR MEAN EQUINOX
SET K=1 FOR TRUE EQUINOX (EQUATION OF THE ORIGINS)
RADIF = INTERMEDIATE RIGHT ASCENSION OF THE EQUINOX,
IN HOURS (+ OR -) (OUT)
Type | Intent | Optional | Attributes | Name | ||
---|---|---|---|---|---|---|
real(kind=wp) | :: | tjd | ||||
integer | :: | k | ||||
real(kind=wp) | :: | raeq |