[amsat-bb] General Astrodynamics Library v0.5

Paul Willmott pwillmott at northrock.bm
Sat Jan 10 13:11:25 PST 2009

Version 0.5.0 of the General Astrodynamics Library has been released.  
It can be downloaded from the project website here:


Updates in this release:

** Additional routines added to Kepler sub-library

** Planetary and Moon rotational elements added

** Reference frame routines for planets other than Earth

** Acceleration due to Solar Radiation Pressure added

** Acceleration due to Atmospheric Drag added

** Sun occulation routine added for satellite eclipses

** Support for Harris-Priester Earth Atmosphere Model

** Mars date and time routines added

** Ellipsoid models for the planets and the Sun added

** Earth satellite rise/set routine added.

The Reference Manual will be updated shortly.

The General Astrodynamics Library (GAL) is a numerical library for C  
and C++ programmers. It is free software under the GNU General Public  

The library provides a wide range of astrodynamical routines such as  
ephemerides, earth orientation, and orbit propagation. There are over  
260 functions in total with an extensive test suite.

Paul Willmott, VP9MU

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