True-of-Date and EME2000 Coordinate Conversion (NOVAS Version)

MATLAB Script for Converting Between True-of-Date and EME2000 Cartesian Coordinates (NOVAS Version)

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PDF document and a MATLAB script named eme_tod_novas.m that can be used to transform between Earth-centered inertial (ECI) true-of-date Cartesian coordinates and the corresponding coordinates in the Earth mean equator and equinox of J2000 (EME2000) coordinate system. This script uses several functions ported to MATLAB from the Fortran version of NOVAS 3.1.

Cite As

David Eagle (2026). True-of-Date and EME2000 Coordinate Conversion (NOVAS Version) (https://www.mathworks.com/matlabcentral/fileexchange/39702-true-of-date-and-eme2000-coordinate-conversion-novas-version), MATLAB Central File Exchange. Retrieved .

General Information

MATLAB Release Compatibility

  • Compatible with any release

Platform Compatibility

  • Windows
  • macOS
  • Linux
Version Published Release Notes Action
1.1.0.0

Updated to use the IAU 2000A algorithm for computing nutation. PDF document updated to reflect this change.

1.0.0.0