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+      SUBROUTINE sla_PLANEL (DATE, JFORM, EPOCH, ORBINC, ANODE, PERIH,
+     :                       AORQ, E, AORL, DM, PV, JSTAT)
+*+
+*     - - - - - - -
+*      P L A N E L
+*     - - - - - - -
+*
+*  Heliocentric position and velocity of a planet, asteroid or comet,
+*  starting from orbital elements.
+*
+*  Given:
+*     DATE      d      date, Modified Julian Date (JD - 2400000.5)
+*     JFORM     i      choice of element set (1-3; Note 3)
+*     EPOCH     d      epoch of elements (TT MJD)
+*     ORBINC    d      inclination (radians)
+*     ANODE     d      longitude of the ascending node (radians)
+*     PERIH     d      longitude or argument of perihelion (radians)
+*     AORQ      d      mean distance or perihelion distance (AU)
+*     E         d      eccentricity
+*     AORL      d      mean anomaly or longitude (radians, JFORM=1,2 only)
+*     DM        d      daily motion (radians, JFORM=1 only)
+*
+*  Returned:
+*     PV        d(6)   heliocentric x,y,z,xdot,ydot,zdot of date,
+*                                       J2000 equatorial triad (AU,AU/s)
+*     JSTAT     i      status:  0 = OK
+*                              -1 = illegal JFORM
+*                              -2 = illegal E
+*                              -3 = illegal AORQ
+*                              -4 = illegal DM
+*                              -5 = numerical error
+*
+*  Called:  sla_EL2UE, sla_UE2PV
+*
+*  Notes
+*
+*  1  DATE is the instant for which the prediction is required.  It is
+*     in the TT timescale (formerly Ephemeris Time, ET) and is a
+*     Modified Julian Date (JD-2400000.5).
+*
+*  2  The elements are with respect to the J2000 ecliptic and equinox.
+*
+*  3  Three different element-format options are available:
+*
+*     Option JFORM=1, suitable for the major planets:
+*
+*     EPOCH  = epoch of elements (TT MJD)
+*     ORBINC = inclination i (radians)
+*     ANODE  = longitude of the ascending node, big omega (radians)
+*     PERIH  = longitude of perihelion, curly pi (radians)
+*     AORQ   = mean distance, a (AU)
+*     E      = eccentricity, e (range 0 to <1)
+*     AORL   = mean longitude L (radians)
+*     DM     = daily motion (radians)
+*
+*     Option JFORM=2, suitable for minor planets:
+*
+*     EPOCH  = epoch of elements (TT MJD)
+*     ORBINC = inclination i (radians)
+*     ANODE  = longitude of the ascending node, big omega (radians)
+*     PERIH  = argument of perihelion, little omega (radians)
+*     AORQ   = mean distance, a (AU)
+*     E      = eccentricity, e (range 0 to <1)
+*     AORL   = mean anomaly M (radians)
+*
+*     Option JFORM=3, suitable for comets:
+*
+*     EPOCH  = epoch of perihelion (TT MJD)
+*     ORBINC = inclination i (radians)
+*     ANODE  = longitude of the ascending node, big omega (radians)
+*     PERIH  = argument of perihelion, little omega (radians)
+*     AORQ   = perihelion distance, q (AU)
+*     E      = eccentricity, e (range 0 to 10)
+*
+*  4  Unused elements (DM for JFORM=2, AORL and DM for JFORM=3) are
+*     not accessed.
+*
+*  5  The reference frame for the result is with respect to the mean
+*     equator and equinox of epoch J2000.
+*
+*  6  The algorithm was originally adapted from the EPHSLA program of
+*     D.H.P.Jones (private communication, 1996).  The method is based
+*     on Stumpff's Universal Variables.
+*
+*  Reference:  Everhart, E. & Pitkin, E.T., Am.J.Phys. 51, 712, 1983.
+*
+*  P.T.Wallace   Starlink   18 March 1999
+*
+*  Copyright (C) 1999 Rutherford Appleton Laboratory
+*-
+
+      IMPLICIT NONE
+
+      DOUBLE PRECISION DATE
+      INTEGER JFORM
+      DOUBLE PRECISION EPOCH,ORBINC,ANODE,PERIH,AORQ,E,AORL,DM,PV(6)
+      INTEGER JSTAT
+
+      DOUBLE PRECISION U(13)
+      INTEGER J
+
+
+
+*  Validate elements and convert to "universal variables" parameters.
+      CALL sla_EL2UE(DATE,JFORM,
+     :               EPOCH,ORBINC,ANODE,PERIH,AORQ,E,AORL,DM,U,J)
+
+*  Determine the position and velocity.
+      IF (J.EQ.0) THEN
+         CALL sla_UE2PV(DATE,U,PV,J)
+         IF (J.NE.0) J=-5
+      END IF
+
+*  Wrap up.
+      JSTAT = J
+
+      END