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Diffstat (limited to 'ast/erfa/fk52h.c')
| -rw-r--r-- | ast/erfa/fk52h.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/ast/erfa/fk52h.c b/ast/erfa/fk52h.c deleted file mode 100644 index e169cbe..0000000 --- a/ast/erfa/fk52h.c +++ /dev/null @@ -1,152 +0,0 @@ -#include "erfa.h" - -void eraFk52h(double r5, double d5, - double dr5, double dd5, double px5, double rv5, - double *rh, double *dh, - double *drh, double *ddh, double *pxh, double *rvh) -/* -** - - - - - - - - - -** e r a F k 5 2 h -** - - - - - - - - - -** -** Transform FK5 (J2000.0) star data into the Hipparcos system. -** -** Given (all FK5, equinox J2000.0, epoch J2000.0): -** r5 double RA (radians) -** d5 double Dec (radians) -** dr5 double proper motion in RA (dRA/dt, rad/Jyear) -** dd5 double proper motion in Dec (dDec/dt, rad/Jyear) -** px5 double parallax (arcsec) -** rv5 double radial velocity (km/s, positive = receding) -** -** Returned (all Hipparcos, epoch J2000.0): -** rh double RA (radians) -** dh double Dec (radians) -** drh double proper motion in RA (dRA/dt, rad/Jyear) -** ddh double proper motion in Dec (dDec/dt, rad/Jyear) -** pxh double parallax (arcsec) -** rvh double radial velocity (km/s, positive = receding) -** -** Notes: -** -** 1) This function 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 eraH2fk5, eraFk5hz, eraHfk5z. -** -** Called: -** eraStarpv star catalog data to space motion pv-vector -** eraFk5hip FK5 to Hipparcos rotation and spin -** eraRxp product of r-matrix and p-vector -** eraPxp vector product of two p-vectors -** eraPpp p-vector plus p-vector -** eraPvstar space motion pv-vector to star catalog data -** -** Reference: -** -** F.Mignard & M.Froeschle, Astron. Astrophys. 354, 732-739 (2000). -** -** Copyright (C) 2013-2016, NumFOCUS Foundation. -** Derived, with permission, from the SOFA library. See notes at end of file. -*/ -{ - int i; - double pv5[2][3], r5h[3][3], s5h[3], wxp[3], vv[3], pvh[2][3]; - - -/* FK5 barycentric position/velocity pv-vector (normalized). */ - eraStarpv(r5, d5, dr5, dd5, px5, rv5, pv5); - -/* FK5 to Hipparcos orientation matrix and spin vector. */ - eraFk5hip(r5h, s5h); - -/* Make spin units per day instead of per year. */ - for ( i = 0; i < 3; s5h[i++] /= 365.25 ); - -/* Orient the FK5 position into the Hipparcos system. */ - eraRxp(r5h, pv5[0], pvh[0]); - -/* Apply spin to the position giving an extra space motion component. */ - eraPxp(pv5[0], s5h, wxp); - -/* Add this component to the FK5 space motion. */ - eraPpp(wxp, pv5[1], vv); - -/* Orient the FK5 space motion into the Hipparcos system. */ - eraRxp(r5h, vv, pvh[1]); - -/* Hipparcos pv-vector to spherical. */ - eraPvstar(pvh, rh, dh, drh, ddh, pxh, rvh); - - return; - -} -/*---------------------------------------------------------------------- -** -** -** Copyright (C) 2013-2016, NumFOCUS Foundation. -** All rights reserved. -** -** This library is derived, with permission, from the International -** Astronomical Union's "Standards of Fundamental Astronomy" library, -** available from http://www.iausofa.org. -** -** The ERFA version is intended to retain identical functionality to -** the SOFA library, but made distinct through different function and -** file names, as set out in the SOFA license conditions. The SOFA -** original has a role as a reference standard for the IAU and IERS, -** and consequently redistribution is permitted only in its unaltered -** state. The ERFA version is not subject to this restriction and -** therefore can be included in distributions which do not support the -** concept of "read only" software. -** -** Although the intent is to replicate the SOFA API (other than -** replacement of prefix names) and results (with the exception of -** bugs; any that are discovered will be fixed), SOFA is not -** responsible for any errors found in this version of the library. -** -** If you wish to acknowledge the SOFA heritage, please acknowledge -** that you are using a library derived from SOFA, rather than SOFA -** itself. -** -** -** TERMS AND CONDITIONS -** -** Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions -** are met: -** -** 1 Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** -** 2 Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** -** 3 Neither the name of the Standards Of Fundamental Astronomy Board, -** the International Astronomical Union nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS -** FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE -** COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, -** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, -** BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN -** ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -** POSSIBILITY OF SUCH DAMAGE. -** -*/ |