Projects / ORSA


ORSA is an interactive tool for scientific grade Celestial Mechanics computations. Asteroids, comets, artificial satellites, Solar, and extra-Solar planetary systems can be accurately reproduced, simulated, and analyzed.

Operating Systems

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  •  12 Jan 2005 16:27

Release Notes: Changes include a rewrite of the Relativistic Corrections, Multipole Expansion (useful e.g. for low-Earth artificial satellites), texture support for all the Solar System planets (the textures can be downloaded automatically using the ORSA download tool), a URL with up-to-date GPS sats ephemeris, and the ability to force the planets and moon to the same position and velocity of the JPL ephemeris file.

  •  01 Oct 2004 22:17

Release Notes: Many bugs were fixed, especially in the GUI. The numerical library was improved with some possible optimizations and speed-ups.

  •  08 Jul 2004 21:22

Release Notes: All the known bugs have been fixed. The graphical user interface has been improved, in particular the 3D OpenGL viewer, with texture support and better rendering of orbits. This release also improves the stability and numerical algorithms, and changes the internal time representation. Import of artificial satellites, and export of numerical integration to an ASCII file is available. There are also improved object editing/generation tools, with the ability to use the orbital covariance matrix for virtual objects generation.

Release Notes: A new interaction containing Relativistic corrections to the Newton interaction has been added. Minor bugs were fixed.


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