SGP4/SDP4

SGP4 and SDP4 orbit propagators

Version 1.1.1 (978 KB)
501 Downloads
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4 Jun 2026

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References:
Hoots, Felix R., and Ronald L. Roehrich. 1980. Models for Propagation of NORAD Element Sets. Spacetrack Report #3. U.S. Air Force: Aerospace Defense Command.
Vallado D. A; Fundamentals of Astrodynamics and Applications; McGraw-Hill, New York; 4th edition (2013).
https://celestrak.org/SpaceData/EOP-All.txt
https://celestrak.org/software/vallado/matlab.zip

Cite As

Meysam Mahooti (2026). SGP4/SDP4 (https://www.mathworks.com/matlabcentral/fileexchange/132693-sgp4-sdp4), MATLAB Central File Exchange. Retrieved .

General Information

MATLAB Release Compatibility

  • Compatible with any release

Platform Compatibility

  • Windows
  • macOS
  • Linux
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Version Published Release Notes
1.1.1

Now, the code generates satellite state vectors at specified time steps in four coordinate systems, i.e., teme, ecef, eci, and tod.
1.1.0

test_sgp4.m and test_sdp4.m were modified.
1.0.1

debug1.m, debug2.m, debug3.m, and debug4.m were added.
1.0.0