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Version 1.3

Technical Support:

  1. Three day trial available for your immediate use

  1. Read the complete manual before you buy:

  1. Aptus is provided as a digital download file, available after your purchase

  2. Refer to the program’s Version history

  3. Problems/Questions:


There are many very well-written and useful texts on the subject of attitude dynamics and determination.
Below is a list of references that have helped us greatly:

  1. Hughes, P. C., Spacecraft Attitude Dynamics, Dover, New York, 2004.

  2. Kuipers, J. B., Quaternions and Rotation Sequences: A Primer with Applications to Orbits, Aerospace, and Virtual Reality, Princeton University Press, Princeton, New Jersey, 1999.

  3. Schaub, H. and Junkins, J.L., Analytical Mechanics of Space Systems, 2nd Ed., AIAA, 2009.

  4. Sheppard, S.W., “Quaternion from Rotation Matrix,” Journal of Guidance and Control, Vol. 1, No. 3, 1978, pp. 223-224.

  5. Sidi, M. J., Spacecraft Dynamics and Control, Cambridge University Press, Cambridge UK, 1997.

  6. Wertz, J. R. Ed., Spacecraft Attitude Determination and Control. Kluwer Academic Publishers, Boston MA, 1978.

Version 1.3

Attitude Visualization and Animation



  1. MATLAB®  Version 7.5  (R2007b)
    or higher (refer to User Manual)

  2. Please contact our support line if using
    MATLAB®  Version 7.4 or earlier

  1. Platform: Mac, Windows, or Linux