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/************************************************************************
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The L1 theory of the galilean satellites
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by Valery Lainey can be found at
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ftp://ftp.imcce.fr/pub/ephem/satel/galilean/L1
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I (Johannes Gajdosik) have just taken the Fortran code and data
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obtained from above and rearranged it into this piece of software.
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I can neigther allow nor forbid the usage of the L1 theory.
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The copyright notice below covers not the work of Valery Lainey
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but just my work, that is the compilation of the L1 theory
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into the software supplied in this file.
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Copyright (c) 2005 Johannes Gajdosik
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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This is an implementation of the L1 theory, V1.1.
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1) do not calculate constant terms at runtime but beforehand
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2) unite terms with the same frequencies
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3) rearrange the terms so that calculation of the argument becomes easier
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4) substitute so that the independent variable becomes T=jd-2433282.5
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5) artificially blend out the usage of polynomials outside [-695+t0,695+t0]
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in order to avoid a discontinuity
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****************************************************************/
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void GetL1Coor(double jd,int body,double *xyz);
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/* Return the rectangular coordinates of the given satellite
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and the given julian date jd expressed in dynamical time (TAI+32.184s).
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The origin of the xyz-coordinates is the center of the planet.
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The reference frame is "dynamical equinox and ecliptic J2000",
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which is the reference frame in VSOP87 and VSOP87A.
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void GetL1OsculatingCoor(double jd0,double jd,int body,double *xyz);
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/* The oculating orbit of epoch jd0, evatuated at jd, is returned.
added
removed
src/planetsephems/l1.h
