Astrodynamics SoftwareFundamentals of Astrodynamics and Applications

AST2BODY  Twobody relations 
COMPLX  Complex math 
CONSTS  Constants WGS84, JGM2, etc. 
ASTDC  Differential correction 
ASTINTER  Interplanetary 
ASTIOD  Initial orbit determination 
ASTMANV  Maneuvers 
ASTMATH  Math 
ASTPERT  Perturbation 
ASTREDUC  Reduction of coordinates 
ASTTIME  Time 
ASTUTIL  Character operations 
SGP4UNIT  SGP4 routines 
SGP4DC  SGP4 Orbit Determination routines 
See "SGP4 Orbit Determination" [AIAA 20086770] for more details. 
Several data files are needed for some of the files.
NUT85.DAT  Nutation coefficients for planetary 85 
NUTATION.DAT  Nutation coefficients for 106 
ATMOSEXP.DAT  Sample exponential atmosphere values 
TESTASTF.DAT  Input for sample test program 
SENSOR.DAT  Sensor sample values 
GEOS1.IN  DC input test 1 
GEOS2.IN  DC input test 2 
GEOS5.IN  DC input test 5 
GEOS1.TXT  DC sample output results 1 
GEOS2.TXT  DC sample output results 2 
GEOS5.TXT  DC sample output results 5 
SGP4VER.TLE  Sample SGP4 test cases 
CrossReference of Available Functions [Excel spreadsheet] (as of 2018 Mar 15)
Within each file there are specific routines to accomplish various operations. Effort has been taken to use similar names and function scopes, although there are some differences based on language features. The SOFTWARE worksheet discusses the specific routines that are available within each larger technical area.
The ALGORITHMS worksheet lists which routines are available (MATLAB).
The EXAMPLES worksheet lists what MATLAB scripts will perform the example exercises in the text. Many are complete, but a few remain to finish all the examples in the text.
The test program is a simple program that executes the input/output operations of each subroutine in that package. There isn't anything fancy about it. It's just intended to be a quick check of the answers. The TESTASTF.DAT file contains my results using the codes. Additional work is needed to update this file, but it's a start.
STK Scenarios from Chapter 6 (5,592,553 bytes) (as of 2011 Dec 26)
These scenarios are useful to see the various transfers in 3D. Other scenarios are in various stages of development.
Questions and comments:
Work email: dvallado@centerforspace.com
Work telephone: 877292CSSI
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