ORSA – Orbit Reconstruction, Simulation and Analysis

Orbit Reconstruction, Simulation and Analysis (ORSA) is a framework for scientific grade Celestial Mechanics computations. The main goals of the project are the implementation of state of the art orbit integration algorithms, with concerns on accuracy and performance, and the development of a number of analysis tools.

Asteroids, comets, artificial satellites, solar and extra-solar planetary systems can be accurately reproduced, simulated, and analyzed.

There’s texture support for all the Solar System planets.

The main goals of the ORSA project are:

  • Create a common infrastructure among the existing celestial mechanics programs and standards.
  • Use an object oriented programming language (C++), CVS and auto-configuration tools to achieve a good design, rapid development and maintainability.
  • Implementation of state of the art orbit integration algorithms, with concerns on accuracy, performance and interaction options.
  • Sevelop command-line and graphical applications with 3D capabilities (OpenGL).
  • Support for High Throughput Computing systems (i.e. Condor) and GRID.

Features include:

  • Accurate numerical algorithms.
  • Uses  JPL ephemeris files for accurate planets positions.
  • Qt-based graphical user interface.
  • Advanced 2D plotting tool and 3D OpenGL viewer.
  • Import asteroids and comets from all the known databases (MPC, JPL, Lowell, AstDyS, and NEODyS).
  • Integrated download tool to update databases.
  • Stand alone numerical library liborsa.
  • Save and restore session from a single file.
  • Many general classes.
  • Create simulate universes.
  • Multipole Expansion (useful for low-Earth artificial satellites).
  • Texture support for all the Solar System planets.
  • Tutorial programs.
  • Cross-platform support – runs on Linux, Mac OS X, and Windows operating systems.

Website: orsa.sourceforge.net
Support: Documentation
Developer: Pasquale Tricarico and many contributors
License: GNU GPL v2


ORSA is written in C++. Learn C++ with our recommended free books and free tutorials.

Return to Astronomy Home Page | Return to Astronomical Data Analysis Home Page

Ongoing series
Linux for StartersNew to Linux? Read our Linux for Starters series.
Free and Open Source SoftwareThe largest compilation of the best free and open source software in the universe. Supplied with our legendary ratings charts.
Linux ReviewsHundreds of in-depth reviews offering our unbiased and expert opinion on software.
Alternatives to GoogleAlternatives to Google's Products and Services examines your options to migrate from the Google ecosystem with open source Linux alternatives.
MicrosoftAlternatives to Microsoft's Products and Services recommends open source Linux software.
Linux System ToolsEssential Linux system tools looks at small, indispensable utilities, useful for system administrators as well as regular users.
Linux ProductivityLinux utilities to maximise your productivity. Small, indispensable tools, useful for anyone running a Linux machine.
Home Computer EmulatorsHome computers became commonplace in the 1980s. Emulate home computers including the Commodore 64, Amiga, Atari ST, ZX81, Amstrad CPC, and ZX Spectrum.
Now and ThenNow and Then examines how promising open source software fared over the years.
Linux at HomeLinux at Home looks at a range of home activities where Linux can play its part, making the most of our time at home, keeping active and engaged.
Linux CandyLinux Candy opens up to the lighter side of Linux. Have some fun!
Best Free Android AppsBest Free Android Apps. There's a strict eligibility criteria for inclusion in this series
Programming BooksThese best free books accelerate your learning of every programming language
Programming TutorialsThese free tutorials offer the perfect tonic to the free programming books series
Stars and StripesStars and Stripes is an occasional series looking at the impact of Linux in the USA
Share this article

Share your Thoughts

This site uses Akismet to reduce spam. Learn how your comment data is processed.