orbit mechanics package.. good for learning..just try it.

My_Orbital_Library
..................\CalcEA.m
..................\Coastline.dat
..................\Constants.m
..................\Groundtrack.jpg
..................\Groundtrack.m
..................\Hohmann.m
..................\JD.m
..................\KeplerCOE.m
..................\NodeChange.m
..................\R1.m
..................\R2.m
..................\R3.m
..................\RVtoLatLong.m
..................\TwoBody.m
..................\__MACOSX
..................\........\._CalcEA.m
..................\........\._Coastline.dat
..................\........\._Constants.m
..................\........\._Groundtrack.m
..................\........\._Hohmann.m
..................\........\._JD.m
..................\........\._KeplerCOE.m
..................\........\._NodeChange.m
..................\........\._R1.m
..................\........\._R2.m
..................\........\._RVtoLatLong.m
..................\........\._TwoBody.m
..................\........\._dInc.m
..................\........\._dVdI.m
..................\........\._ecef2eci.m
..................\........\._eci2ecef.m
..................\........\._elorb.m
..................\........\._license.txt
..................\........\._nuFromM.m
..................\........\._nuFromTp.m
..................\........\._plotorb.m
..................\........\._randv.m
..................\........\._topo.m
..................\........\._zeroTo360.m
..................\dInc.m
..................\dVdI.m
..................\ecef2eci.m
..................\eci2ecef.m
..................\elorb.m
..................\license.txt
..................\nuFromM.m
..................\nuFromTp.m
..................\plotorb.m
..................\randv.m
..................\topo.m
..................\zeroTo360.m

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