SUBROUTINE iau_FK52H ( R5, D5, DR5, DD5, PX5, RV5, : RH, DH, DRH, DDH, PXH, RVH ) *+ * - - - - - - - - - - * i a u _ F K 5 2 H * - - - - - - - - - - * * Transform FK5 (J2000) star data into the Hipparcos system. * * This routine is part of the International Astronomical Union's * SOFA (Standards of Fundamental Astronomy) software collection. * * Status: support routine. * * Given (all FK5, equinox J2000, epoch J2000): * R5 d RA (radians) * D5 d Dec (radians) * DR5 d proper motion in RA (dRA/dt, rad/Jyear) * DD5 d proper motion in Dec (dDec/dt, rad/Jyear) * PX5 d parallax (arcsec) * RV5 d radial velocity (km/s, positive = receding) * * Returned (all Hipparcos, epoch J2000): * RH d RA (radians) * DH d Dec (radians) * DRH d proper motion in RA (dRA/dt, rad/Jyear) * DDH d proper motion in Dec (dDec/dt, rad/Jyear) * PXH d parallax (arcsec) * RVH d radial velocity (km/s, positive = receding) * * Notes: * * 1) This routine transforms FK5 star positions and proper motions into * the system of the Hipparcos catalog. * * 2) The proper motions in RA are dRA/dt rather than cos(Dec)*dRA/dt, * and are per year rather than per century. * * 3) The FK5 to Hipparcos transformation is modeled as a pure rotation * and spin; zonal errors in the FK5 catalog are not taken into * account. * * 4) See also iau_H2FK5, iau_FK5HZ, iau_HFK5Z. * * Called: * iau_STARPV star catalog data to space motion pv-vector * iau_FK5HIP FK5 to Hipparcos rotation and spin * iau_RXP product of r-matrix and p-vector * iau_PXP vector product of two p-vectors * iau_PPP p-vector plus p-vector * iau_PVSTAR space motion pv-vector to star catalog data * * Reference: * * F.Mignard & M.Froeschle, Astron. Astrophys. 354, 732-739 (2000). * * This revision: 2009 March 16 * * Copyright (C) 2008 IAU SOFA Review Board. See notes at end. * *----------------------------------------------------------------------- IMPLICIT NONE DOUBLE PRECISION R5, D5, DR5, DD5, PX5, RV5, : RH, DH, DRH, DDH, PXH, RVH DOUBLE PRECISION PV5(3,2), R5H(3,3), S5H(3), WXP(3), VV(3), : PVH(3,2) INTEGER J, I * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - * FK5 barycentric position/velocity pv-vector (normalized). CALL iau_STARPV ( R5, D5, DR5, DD5, PX5, RV5, PV5, J ) * FK5 to Hipparcos orientation matrix and spin vector. CALL iau_FK5HIP ( R5H, S5H ) * Make spin units per day instead of per year. DO 1 I=1,3 S5H(I) = S5H(I) / 365.25D0 1 CONTINUE * Orient the FK5 position into the Hipparcos system. CALL iau_RXP ( R5H, PV5(1,1), PVH(1,1) ) * Apply spin to the position giving an extra space motion component. CALL iau_PXP ( PV5(1,1), S5H, WXP ) * Add this component to the FK5 space motion. CALL iau_PPP ( WXP, PV5(1,2), VV ) * Orient the FK5 space motion into the Hipparcos system. CALL iau_RXP ( R5H, VV, PVH(1,2) ) * Hipparcos pv-vector to spherical. CALL iau_PVSTAR ( PVH, RH, DH, DRH, DDH, PXH, RVH, J ) * Finished. *+----------------------------------------------------------------------- * * Copyright (C) 2008 * Standards Of Fundamental Astronomy Review Board * of the International Astronomical Union. * * ===================== * SOFA Software License * ===================== * * NOTICE TO USER: * * BY USING THIS SOFTWARE YOU ACCEPT THE FOLLOWING TERMS AND CONDITIONS * WHICH APPLY TO ITS USE. * * 1. The Software is owned by the IAU SOFA Review Board ("the Board"). * * 2. Permission is granted to anyone to use the SOFA software for any * purpose, including commercial applications, free of charge and * without payment of royalties, subject to the conditions and * restrictions listed below. * * 3. You (the user) may copy and adapt the SOFA software and its * algorithms for your own purposes and you may copy and distribute * a resulting "derived work" to others on a world-wide, royalty-free * basis, provided that the derived work complies with the following * requirements: * * a) Your work shall be marked or carry a statement that it (i) uses * routines and computations derived by you from software provided * by SOFA under license to you; and (ii) does not contain * software provided by SOFA or software that has been distributed * by or endorsed by SOFA. * * b) The source code of your derived work must contain descriptions * of how the derived work is based upon and/or differs from the * original SOFA software. * * c) The name(s) of all routine(s) that you distribute shall differ * from the SOFA names, even when the SOFA content has not been * otherwise changed. * * d) The routine-naming prefix "iau" shall not be used. * * e) The origin of the SOFA components of your derived work must not * be misrepresented; you must not claim that you wrote the * original software, nor file a patent application for SOFA * software or algorithms embedded in the SOFA software. * * f) These requirements must be reproduced intact in any source * distribution and shall apply to anyone to whom you have granted * a further right to modify the source code of your derived work. * * 4. In any published work or commercial products which includes * results achieved by using the SOFA software, you shall acknowledge * that the SOFA software was used in obtaining those results. * * 5. You shall not cause the SOFA software to be brought into * disrepute, either by misuse, or use for inappropriate tasks, or by * inappropriate modification. * * 6. The SOFA software is provided "as is" and the Board makes no * warranty as to its use or performance. The Board does not and * cannot warrant the performance or results which the user may obtain * by using the SOFA software. The Board makes no warranties, express * or implied, as to non-infringement of third party rights, * merchantability, or fitness for any particular purpose. In no * event will the Board be liable to the user for any consequential, * incidental, or special damages, including any lost profits or lost * savings, even if a Board representative has been advised of such * damages, or for any claim by any third party. * * 7. The provision of any version of the SOFA software under the terms * and conditions specified herein does not imply that future * versions will also be made available under the same terms and * conditions. * * Correspondence concerning SOFA software should be addressed as * follows: * * Internet email: sofa@rl.ac.uk * Postal address: IAU SOFA Center * Rutherford Appleton Laboratory * Chilton, Didcot, Oxon OX11 0QX * United Kingdom * *----------------------------------------------------------------------- END