Two celestial mechanics programs based on numerical integration are contained in the download package, which are both very friendly and easy to use. Solex v 8.5 computes high precision ephemerides and osculating elements over the time span -5000 +5000, closely matching the JPL DE406 ephemerides, but the integration can reliably be extended to a range 10-100 times wider. Libraries of asteroids (up to 64K bodies), comets and stars (up to 1M stars) are included. Data can also be read from custom files containing either positions and velocities or osculating elements, so that new bodies (including Earth's satellites) can easily be handled. Up to 4000 bodies can be simultaneouly loaded, and an automated search for close approaches, eclipses or occultations can be made. Text (screen or file) and graphic output are switchable, making the program a flexible interactive planetarium and N-body orbit simulator. Realistic sky views can be displayed both statically and dynamically, virtually from any place in the solar system and pointing to any fixed direction or to any moving object. The program is at the same time simple to use and powerful in its performances. It can just give aesthetic pleasure and help to identify sky objects, or it can be used by an experienced researcher to investigate aspects of the solar system dynamics such as long-term change of orbital elements, impact probabilities and chaotic motion. FindOrb v5.3 is a program for orbit determination. The program inputs observational data of a solar system body or an Earth's satellite and outputs the best fitting starting positions and velocities (and classical orbital elements). Non-gravitational parameters for comets (Ai coefficients) or satellites (drag coefficient) can also be optimized. The computed starting vectors can be propagated to any other epoch and can be imported by Solex v8.5.
Both programs are suitable for amatorial as well as for professional use. Extended documentation is given as RTF files."


Author(s): Aldo Vitagliano (alvitagl@unina.it)
Version: 8.5 Filesize: 2.86 MB
Language(s): English
License type: Shareware

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