/************************************************************************ The Ephemerides of the Martian satellites (adjustement from 1877 to 2005, Version 1.0) by Valery Lainey can be obtained from Valery Lainey: V.Lainey (Lainey@oma.be) ROB- 3, Avenue Circulaire, B-1180 Bruxelles (Belgium) IMCCE - 77, Avenue Denfert-Rochereau 75014 Paris (France) ----------------------------------------------------------------------- I (Johannes Gajdosik) have just taken Valery Laineys Fortran code, MarsSatV1-0.f, which he kindly supplied, and rearranged it into this piece of software. I can neigther allow nor forbid the usage of Valery Laineys Ephemerides of the Martian satellites. The copyright notice below covers not the work of Valery Lainey but just my work, that is the compilation of Valery Laineys Ephemerides of the Martian satellites into the software supplied in this file. Copyright (c) 2006 Johannes Gajdosik Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. My modifications to the "Ephemerides of the Martian satellites" as implemented in MarsSatV1-0.f are 1) do not calculate constant terms at runtime but beforehand 2) unite terms with the same frequencies ****************************************************************/ #include "marssat.h" #include "calc_interpolated_elements.h" #include "elliptic_to_rectangular.h" #include #include /* memcpy */ #ifndef M_PI #define M_PI 3.14159265358979323846 #endif struct MarsSatTerm { double phase,frequency,amplitude; }; struct MarsSatTermList { const struct MarsSatTerm *terms; int size; }; struct MarsSatBody { const char *name; double mu,l,acc; double constants[6]; const struct MarsSatTermList lists[4]; }; static const struct MarsSatTerm mars_sat_phobos_0[16] = { { 5.013490350126586e+00, 2.715567382195733e+01, 4.537539999999999e-09}, { 6.839910590780000e-01, 1.969446151585829e+01, 7.312000000000000e-10}, { 4.514031245592586e+00, 4.073350897245015e+01, 7.785599999999993e-10}, { 5.531351678889586e+00, 1.357783661756435e+01, 3.529399999999985e-10}, { 5.700307292822586e+00, 4.685013393001369e+01, 2.094599999999994e-10}, { 4.228062220664587e+00, 5.431134764391466e+01, 9.139999999999999e-11}, { 1.167907583017500e+00, 7.461211875946264e+00, 6.204000000000000e-11}, { 5.197274703601086e+00, 6.042797388545593e+01, 5.295999999999951e-11}, { 5.160045430868086e+00, 3.938582310889583e+01, 1.811999999999999e-11}, { 2.223277229900500e+00, 5.777452001970681e+01, 1.563999999999897e-11}, { 6.921616240614999e-01, 2.103904892768837e+01, 1.535999999999999e-11}, { 6.215802752555586e+00, 3.327229783044108e+01, 1.304000000000000e-11}, { 1.368231494011000e+00, 3.938892179708230e+01, 1.661999999999999e-11}, { 2.601539199675000e-01, 7.446011234647927e+00, 1.328000000000000e-11}, { 5.903845687100000e-02, 3.941932465627423e+01, 8.559999999999978e-12}, { 6.179310844209586e+00, 5.911910805492755e+01, 7.240000000000000e-12}, }; static const struct MarsSatTerm mars_sat_phobos_1[42] = { { 5.334169568271586e+00, 9.145914066599032e-03, 5.016848130000000e-05}, { 5.334169148295587e+00, 9.145914113327495e-03, 5.016848130000000e-05}, { 3.805345265960000e-01, 1.540952541904328e-03, 3.350264970000000e-05}, { 3.805339484960000e-01, 1.540952613104260e-03, 3.350264903000000e-05}, { 5.288363718535586e+00, 1.829243888046791e-02, 2.827839093000000e-05}, { 5.288363809359586e+00, 1.829243887034939e-02, 2.827839093000000e-05}, { 3.412685718051586e+00, 7.604696023359408e-03, 1.578862428000000e-05}, { 3.412685998796586e+00, 7.604695992157328e-03, 1.578862427000000e-05}, { 3.448999855869586e+00, 2.715567616927210e+01, 3.008844320000000e-05}, { 9.194445444030001e-01, 3.101144183892481e-03, 8.178563170000001e-06}, { 9.194443192780000e-01, 3.101144208596499e-03, 8.178563340000000e-06}, { 5.387625479307586e+00, 1.969446275049270e+01, 2.044327843999999e-05}, { 2.848996739890000e+00, 2.743829098982358e-02, 6.516951720000000e-06}, { 2.848996748767000e+00, 2.743829098862537e-02, 6.516951720000000e-06}, { 3.954411167839586e+00, 1.357783808463605e+01, 1.013316988000000e-05}, { 2.912659283736000e+00, 4.073351425390815e+01, 7.483468759999740e-06}, { 4.067858164824586e+00, 2.589727369338346e-02, 2.589359390000000e-06}, { 4.067857973471586e+00, 2.589727371473152e-02, 2.589359390000000e-06}, { 3.776271613850000e-01, 3.658417828853650e-02, 1.125147420000000e-06}, { 3.776267985560000e-01, 3.658417832900902e-02, 1.125147420000000e-06}, { 4.121936540919586e+00, 4.685014091671000e+01, 1.523532599999976e-06}, { 1.231836210236000e+00, 1.674957754399965e-02, 4.976512300000000e-07}, { 1.231836585135000e+00, 1.674957750247454e-02, 4.976512300000000e-07}, { 2.488083095032000e+00, 1.520386207875350e-02, 6.841966800000000e-07}, { 2.488083105051000e+00, 1.520386207728190e-02, 6.841966800000000e-07}, { 1.576141880659500e+00, 3.504321962396548e-02, 1.124868580000000e-06}, { 6.145328698142587e+00, 6.116624841770791e+00, 7.873411399999999e-07}, { 2.626756105114500e+00, 5.431135233854420e+01, 1.040645720000000e-06}, { 2.759579551372000e+00, 7.461213382164448e+00, 7.166789399999994e-07}, { 6.005673273380586e+00, 1.314187651672942e+00, 6.022022799999936e-07}, { 9.353090056600000e-02, 7.532115638546220e-04, 1.964976900000000e-07}, { 9.343265452500001e-02, 7.532237916966188e-04, 1.964964500000000e-07}, { 4.302928383505000e-01, 3.938582557777600e+01, 4.987307800000000e-07}, { 3.587439959397586e+00, 6.042797969706294e+01, 4.804827999999994e-07}, { 4.183547650369587e+00, 4.572998195120822e-02, 1.747133100000000e-07}, { 4.183547815926586e+00, 4.572998193123842e-02, 1.747133100000000e-07}, { 5.589444380180586e+00, 6.068411018120026e-03, 1.793076700000000e-07}, { 5.589445119118587e+00, 6.068410936124942e-03, 1.793076800000000e-07}, { 6.062696336024086e+00, 3.938892673561993e+01, 2.653755199999908e-07}, { 4.628882088425586e+00, 3.327230135427769e+01, 2.539272800000000e-07}, { 4.736462571780586e+00, 1.224558395734566e-02, 1.254715400000000e-07}, { 4.736462588777586e+00, 1.224558396211886e-02, 1.254715500000000e-07}, }; static const struct MarsSatTerm mars_sat_phobos_2[27] = { { 1.404382124885000e+00, 7.595588511174286e-03, 1.514110912521000e-02}, { 2.088385523034000e+00, 1.970205682773437e+01, 3.849620867400000e-04}, { 3.895377361148586e+00, 1.069670280268190e-02, 6.903413242000000e-05}, { 4.989572094750000e-01,-7.605272825959576e-03, 4.946101994000000e-05}, { 8.215210221720000e-01, 4.685772969905357e+01, 3.671320788000000e-05}, { 3.378076387479586e+00,-7.453616316894914e+00, 3.267983782000000e-05}, { 2.772375719698000e+00, 3.939651873194720e+01, 8.750483050000000e-06}, { 2.839303414769000e+00, 6.124220388371520e+00, 6.170938810000000e-06}, { 3.184503170430000e-01, 6.043556479692822e+01, 6.957005940000000e-06}, { 1.410329121503000e+00, 1.984322681200531e-02, 5.734088960000000e-06}, { 1.336796551701000e+00, 3.327989343110183e+01, 3.431577860000000e-06}, { 3.853646745987586e+00,-2.103145308554279e+01, 4.037409510000000e-06}, { 2.547067366210000e-01, 1.549665594221090e-03, 2.115296220000000e-06}, { 1.508224230072000e+00,-5.911151611514718e+01, 1.904827620000000e-06}, { 3.462607551400000e-02,-5.165030141480156e+01, 8.696094700000001e-07}, { 3.198655314207586e+00, 9.152774292423818e-03, 6.329868200000000e-07}, { 5.163954670916587e+00, 1.674080796065678e-02, 6.130317800000000e-07}, { 7.803937436990001e-01,-1.550610622055567e-03, 5.737217100000000e-07}, { 3.264588234538586e+00, 2.716326950857758e+01, 8.181088300000000e-07}, { 5.211329429707586e+00, 2.898903518276566e-02, 7.434145300000000e-07}, { 2.691716763490000e+00,-2.714807769012140e+01, 5.441647800000001e-07}, { 1.001733960626000e+00,-4.553367734785991e+01, 5.044515000000000e-07}, { 3.212149602842586e+00,-1.968376490094933e+01, 4.284599100000000e-07}, { 4.145658249560586e+00,-3.460928932187340e+01, 4.224937300000000e-07}, { 5.063879137454586e+00, 2.589097180762378e-02, 3.581949800000000e-07}, { 2.558639707373000e+00, 6.064928432880783e-03, 3.808881200000000e-07}, { 5.292499025555586e+00, 3.075065445597794e-03, 4.055739200000000e-07}, }; static const struct MarsSatTerm mars_sat_phobos_3[28] = { { 2.058107128488000e+00,-7.604861328578004e-03, 9.408605183120001e-03}, { 3.248856489376586e+00,-9.145863467943084e-03, 5.699538102000000e-05}, { 4.557280987272586e+00, 1.829238959116374e-02, 2.474369483000000e-05}, { 6.113423353213586e+00, 7.595702278066188e-03, 2.062715397000000e-05}, { 2.067112903892000e+00, 2.743825478464904e-02, 5.945574160000000e-06}, { 1.700689207004000e+00, 9.145729527513899e-03, 3.920190200000000e-06}, { 3.577059353926586e+00,-1.829259493439447e-02, 2.167791970000000e-06}, { 4.940284891770586e+00,-7.453616316894914e+00, 2.769763750000000e-06}, { 2.117885747855000e+00, 3.941171892425920e+01, 1.813539170000000e-06}, { 5.176055365230000e-01, 1.970205682773437e+01, 1.083429180000000e-06}, { 5.864248782211586e+00, 3.658425999636452e-02, 1.066657010000000e-06}, { 3.240692168340586e+00, 2.589639535977297e-02, 7.909853300000000e-07}, { 7.570751994340000e-01,-1.321790869500707e+00, 8.880885099999999e-07}, { 6.608910796060000e-01, 6.124220388371520e+00, 5.520758900000000e-07}, { 5.519669134088586e+00, 4.685772969905357e+01, 4.397886000000000e-07}, { 5.844000094873587e+00,-2.743825733444110e-02, 4.583609100000000e-07}, { 4.602755395228586e+00,-1.675516082048598e-02, 3.533131100000000e-07}, { 2.685649467156000e+00, 1.542518910643103e-03, 3.502988500000000e-07}, { 3.353176877809586e+00, 1.225604581839110e+01, 3.828851700000000e-07}, { 2.556761413073000e+00, 1.068971473943851e-02, 2.711247300000000e-07}, { 4.622369718415587e+00,-2.589682634097252e-02, 1.991745400000000e-07}, { 7.497690894330000e-01, 3.504362063026418e-02, 2.036897700000000e-07}, { 3.965205602751586e+00, 2.714806830611846e+01, 1.726779600000000e-07}, { 4.743858488241586e+00,-2.103145308554279e+01, 1.574472800000000e-07}, { 3.405870070134586e+00, 4.572380100924578e-02, 1.698567700000000e-07}, { 3.742380849210000e-01, 3.327989343110183e+01, 1.015004500000000e-07}, { 1.374678754422000e+00,-1.970206671243377e+01, 8.259149000000001e-08}, { 1.140160118874000e+00,-6.108652383295211e-03, 8.504923000000000e-08}, }; static const struct MarsSatTerm mars_sat_deimos_0[25] = { { 6.146803530569087e+00, 2.294413036846356e+00, 5.398360000000000e-09}, { 3.432805186019586e+00, 9.935735425667586e+00, 7.095199999999997e-10}, { 4.356581106602587e+00, 3.441619555269535e+00, 3.737800000000000e-10}, { 5.915601483397086e+00, 9.926589650598594e+00, 2.337400000000000e-10}, { 1.615243161446500e+00, 1.147206518423178e+00, 1.697000000000000e-10}, { 2.114704906116000e+00, 9.917443791162608e+00, 5.314000000000000e-11}, { 9.393388277920001e-01, 9.954027953247621e+00, 7.046000000000000e-11}, { 3.949494792732586e+00, 9.944881541450725e+00, 4.233999999999998e-11}, { 2.089322391969500e+00, 2.294097606691310e+00, 2.813999999999983e-11}, { 7.795571756865000e-01, 2.294728469946876e+00, 2.549999999999971e-11}, { 2.361851669664500e+00, 4.588826073692712e+00, 1.676000000000000e-11}, { 2.770026883578500e+00, 9.954658773106329e+00, 9.719999999999976e-12}, { 4.733522308629587e+00, 9.963173826265681e+00, 9.519999999999998e-12}, { 3.258781379519086e+00, 1.472506551307767e+01, 9.739999999999990e-12}, { 4.596299836113586e+00, 9.908297894321850e+00, 1.027999999999982e-11}, { 3.057688443346500e+00, 2.682916339604879e+00, 6.679999999999999e-12}, { 5.453932177963086e+00, 2.682285947505377e+00, 6.879999999999995e-12}, { 4.328499239462586e+00, 9.936050924435195e+00, 6.199999999999996e-12}, { 2.168321380562000e+00, 4.976699000854042e+00, 5.359999999999916e-12}, { 2.516818588675000e+00, 9.935420104041299e+00, 3.359999999999995e-12}, { 2.997827070725000e-01, 3.441304123224338e+00, 2.919999999999998e-12}, { 2.143143420462500e+00, 2.682600911813873e+00, 2.979999999999999e-12}, { 5.271781540988586e+00, 3.441934988580561e+00, 2.640000000000000e-12}, { 5.382287205930000e-01, 9.926905039305762e+00, 2.039999999999966e-12}, { 3.629187963751586e+00, 2.303558945733479e+00, 1.090000000000000e-12}, }; static const struct MarsSatTerm mars_sat_deimos_1[21] = { { 2.488175621789000e+00, 3.153377646687549e-04, 2.483031660190000e-03}, { 2.488175634463000e+00, 3.153377641537758e-04, 2.483031659490000e-03}, { 5.336889264964586e+00, 9.145915158660612e-03, 2.023426978200000e-04}, { 5.336889346905586e+00, 9.145915155199243e-03, 2.023426978200000e-04}, { 5.281538321363586e+00, 1.829244561727392e-02, 1.043167564200000e-04}, { 5.281537958522586e+00, 1.829244563271799e-02, 1.043167564300000e-04}, { 1.433490018835500e+00, 2.294413045224799e+00, 1.637133774599998e-04}, { 2.852007788337500e+00, 2.743818628432718e-02, 4.820671420000000e-05}, { 3.147176604035586e+00, 1.860783561096842e-02, 1.497066023000000e-05}, { 3.147176307034586e+00, 1.860783562364318e-02, 1.497066034000000e-05}, { 3.182516662993086e+00, 1.147206709032795e+00, 1.137028858000000e-05}, { 5.917181875408586e+00, 3.441620120814550e+00, 8.350609860000001e-06}, { 3.544871659744586e+00, 6.190897763118658e-04, 4.383254500000000e-06}, { 3.544871649035586e+00, 6.190897769462623e-04, 4.383254500000000e-06}, { 4.614193383590000e-01, 3.657933964533806e-02, 8.316176420000001e-06}, { 6.754222685930000e-01, 2.775277029221846e-02, 6.447587580000001e-06}, { 5.001640850015586e+00, 9.935735582783501e+00, 7.926687400000001e-06}, { 4.485218623803586e+00, 8.828439970895009e-03, 3.905064210000000e-06}, { 2.221013917980000e-01, 9.464721723028089e-03, 3.117801830000000e-06}, { 4.485218622895586e+00, 8.828439971019056e-03, 3.905064210000000e-06}, { 2.221013944660000e-01, 9.464721722885516e-03, 3.117801830000000e-06}, }; static const struct MarsSatTerm mars_sat_deimos_2[15] = { { 2.198649419514000e+00, 3.148401892560942e-04, 2.744131534600000e-04}, { 4.366636518977586e+00, 4.977013897776327e+00, 6.015912711000000e-05}, { 1.463816210370000e+00,-3.153164045300449e-04, 3.614585349000000e-05}, { 1.362467588064000e+00, 2.682600831640474e+00, 2.577157903000000e-05}, { 9.336792893320000e-01,-4.958721582505435e+00, 6.801997830000000e-06}, { 3.152432010349586e+00, 1.535394310272536e+00, 4.452979140000000e-06}, { 4.734051493918586e+00,-4.949575691510945e+00, 2.238482920000000e-06}, { 5.736642853342587e+00, 2.327524649334390e-04, 1.478747570000000e-06}, { 5.084945958505586e+00, 3.912335403634271e-04, 1.457720040000000e-06}, { 4.232770650771586e+00, 7.271426904652134e+00, 1.347030310000000e-06}, { 1.516439412109000e+00, 1.491274947692300e+01, 7.538179100000001e-07}, { 3.100618466711000e+00, 1.797748798526167e-02, 8.716229700000000e-07}, { 5.155432690964586e+00, 3.881877876517008e-01, 1.015648880000000e-06}, { 2.250768124831000e+00,-4.940429834739583e+00, 5.090989300000000e-07}, { 3.422251338868586e+00,-4.977013897776327e+00, 6.537077500000000e-07}, }; static const struct MarsSatTerm mars_sat_deimos_3[27] = { { 2.981506933511000e+00,-3.154811355556041e-04, 1.562693319959000e-02}, { 4.557500894366586e+00, 1.829233626168517e-02, 1.321818631100000e-04}, { 3.248124065112586e+00,-9.145934570587952e-03, 3.833652719000000e-05}, { 1.701551338710000e+00, 9.145665986601770e-03, 2.660211842000000e-05}, { 2.067662003165000e+00, 2.743821959085702e-02, 2.882438535000000e-05}, { 4.805327222478586e+00, 3.158564952832469e-04, 2.713213911000000e-05}, { 2.318788380092000e+00, 1.860776219134252e-02, 9.296324950000000e-06}, { 3.613580709014586e+00,-1.829261290520875e-02, 4.460960290000000e-06}, { 5.867810550672586e+00, 3.658405181871115e-02, 4.904156030000000e-06}, { 5.496515547817586e+00,-9.461294099629817e-03, 2.366881150000000e-06}, { 6.120362957845586e+00, 2.775361064625920e-02, 2.057552850000000e-06}, { 3.612389208841586e+00, 8.830178627407989e-03, 2.365750140000000e-06}, { 5.554163001934587e+00,-1.860800990265229e-02, 1.228814440000000e-06}, { 3.561485983136586e+00, 1.797648948023003e-02, 1.215189460000000e-06}, { 1.941975361869000e+00,-6.259843043363501e-04, 9.602856999999999e-07}, { 5.845244776759587e+00,-2.743819348074506e-02, 1.174471770000000e-06}, { 1.821048365911000e+00, 9.460829229838182e-03, 1.058441050000000e-06}, { 7.587135454610000e-01, 1.682177864988152e-04, 2.383147490000000e-06}, { 3.292891638604586e+00, 4.573365667404765e-02, 7.656303800000000e-07}, { 3.766016108380586e+00, 3.683140215171970e-02, 4.075824300000000e-07}, { 5.747244956219586e+00, 9.954342722363187e+00, 4.962340900000000e-07}, { 1.724062868741000e+00,-2.774017744689255e-02, 3.003077900000000e-07}, { 4.429747729642586e+00,-8.904754331211824e-03, 2.613416400000000e-07}, { 8.659161909010000e-01, 2.718340176462802e-02, 2.891945200000000e-07}, { 2.259603352363000e+00,-3.660152378331885e-02, 2.213788200000000e-07}, { 1.108725025984000e+00, 9.935732440466172e+00, 2.449950300000000e-07}, { 1.680391963791000e+00, 9.076040299352415e-03, 1.652416600000000e-07}, }; static const struct MarsSatBody mars_sat_bodies[2] = { { "phobos", 9.549547741038312e-11, 1.970205562831390e+01, 1.657852042683113e-10, { 0.0000626916188000, 2.0912973926417302, -0.0000005774003141, 0.0000006185052790, -0.0000575018919826, -0.0000540676493351, }, { {mars_sat_phobos_0,16}, {mars_sat_phobos_1,42}, {mars_sat_phobos_2,27}, {mars_sat_phobos_3,28} } }, { "deimos", 9.549547622768120e-11, 4.977013889652300e+00, -2.331793571572226e-14, { 0.0001568134086700, -1.9167537810740201, -0.0000239579419518, 0.0000257893300229, -0.0056443721379635, -0.0053121806978560, }, { {mars_sat_deimos_0,25}, {mars_sat_deimos_1,21}, {mars_sat_deimos_2,15}, {mars_sat_deimos_3,27} } }, }; static void CalcMarsSatElem(double t,int body,double elem[6]) { int j; const struct MarsSatBody *bp = mars_sat_bodies + body; memcpy(elem,bp->constants,6*sizeof(double)); for (j=0;j<2;j++) { const struct MarsSatTerm *const begin = bp->lists[j].terms; const struct MarsSatTerm *p = begin + bp->lists[j].size; while (--p >= begin) { const double d = p->phase + t*p->frequency; elem[j] += p->amplitude * cos(d); } } for (j=2;j<4;j++) { const struct MarsSatTerm *const begin = bp->lists[j].terms; const struct MarsSatTerm *p = begin + bp->lists[j].size; while (--p >= begin) { const double d = p->phase + t*p->frequency; elem[2*j-2] += p->amplitude * cos(d); elem[2*j-1] += p->amplitude * sin(d); } } elem[1] += (bp->l + bp->acc * t) * t; } static void MultMat(const double a[9],const double b[9],double c[9]) { int i,j; for (i=0;i<3;i++) { for (j=0;j<3;j++) { c[i*3+j] = a[i*3]*b[j] + a[i*3+1]*b[3+j] + a[i*3+2]*b[6+j]; } } } static const double J2000_to_VSOP87[9] = { 9.999999999998848e-01,-4.799655442984222e-07, 0.000000000000000e+00, 4.403598133110236e-07, 9.174821370868568e-01, 3.977769829016507e-01, -1.909192461077750e-07,-3.977769829016049e-01, 9.174821370869625e-01}; static const double ome0 = 47.68143; static const double inc0 = 37.1135; static const double dome = -0.1061; static const double dinc = 0.0609; static void GenerateMarsSatToVSOP87(double t,double mars_sat_to_vsop87[9]) { t -= 6491.5; { const double ome = (ome0 + dome * t / 36525.) * (M_PI/180.0); const double inc = (inc0 + dinc * t / 36525.) * (M_PI/180.0); const double co = cos(ome); const double so = sin(ome); const double ci = cos(inc); const double si = sin(inc); #if defined __GNUC__ && !defined __STRICT_ANSI__ const double m[9] = {co,-ci*so, si*so, so, ci*co,-si*co, 0.0,si,ci}; #else double m[9]; m[0] = co; m[1] = -ci*so; m[2] = si*so; m[3] = so; m[4] = ci*co; m[5] = -si*co; m[6] = 0.0; m[7] = si; m[8] = ci; #endif MultMat(J2000_to_VSOP87,m,mars_sat_to_vsop87); } } static double t_0 = -1e100; static double t_1 = -1e100; static double t_2 = -1e100; static double marssat_elem_0[2*6]; static double marssat_elem_1[2*6]; static double marssat_elem_2[2*6]; /* 1 day: */ #define DELTA_T 1.0 static double marssat_jd0 = -1e100; static double marssat_elem[2*6]; static void CalcAllMarsSatElem(double t,double elem[12]) { CalcMarsSatElem(t,0,elem+(0*6)); CalcMarsSatElem(t,1,elem+(1*6)); } static double mars_sat_to_vsop87[9]; void GetMarsSatCoor(double jd,int body,double *xyz) { GetMarsSatOsculatingCoor(jd,jd,body,xyz); } void GetMarsSatOsculatingCoor(const double jd0,const double jd, const int body,double *xyz) { double x[3]; if (jd0 != marssat_jd0) { const double t0 = jd0 - 2451545.0 + 6491.5; marssat_jd0 = jd0; CalcInterpolatedElements(t0,marssat_elem,12, &CalcAllMarsSatElem,DELTA_T, &t_0,marssat_elem_0, &t_1,marssat_elem_1, &t_2,marssat_elem_2); GenerateMarsSatToVSOP87(t0,mars_sat_to_vsop87); } EllipticToRectangularA(mars_sat_bodies[body].mu,marssat_elem+(body*6), jd-jd0,x); xyz[0] = mars_sat_to_vsop87[0]*x[0] + mars_sat_to_vsop87[1]*x[1] + mars_sat_to_vsop87[2]*x[2]; xyz[1] = mars_sat_to_vsop87[3]*x[0] + mars_sat_to_vsop87[4]*x[1] + mars_sat_to_vsop87[5]*x[2]; xyz[2] = mars_sat_to_vsop87[6]*x[0] + mars_sat_to_vsop87[7]*x[1] + mars_sat_to_vsop87[8]*x[2]; /* printf("%d %18.9lf %15.12lf %15.12lf %15.12lf\n", body,jd,xyz[0],xyz[1],xyz[2]); */ }