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A MATLAB Script for Terrestrial and Celestial Coordinate Conversion

  • anmp
  • celpolthis function allows for the specification of celestial pole
  • celterthis function rotates a vector from the celestial to the
  • ciobasthis function returns the orthonormal basis vectors, with
  • ciolocthis function returns the location of the celestial
  • ciotio
  • eect2000equation of the equinoxes complementary terms, consistent with
  • eqinox
  • eqxrathis function computes the intermediate right ascension
  • erotthis function returns the value of the earth rotation angle
  • etiltthis function computes quantities related to the orientation
  • framethis function transforms a vector from the dynamical reference
  • funargthis function computes fundamental arguments (mean elements)
  • gdateconvert Julian date to Gregorian (calendar) date
  • getdtthis entry returns the current value of delta-t
  • getmodthis function returns the 'mode' value, which
  • hiacc
  • jd2str(jdate)convert Julian date to string equivalent
  • loacc
  • nodthis function returns the values for nutation in longitude and
  • novas_timesthis function computes the terrestrial time (tt) julian date
  • nut2000anutation based on iau 2000a theory
  • nut2000knutation based on the iau 2000k theory
  • nutatethis function nutates equatorial rectangular coordinates from
  • obliq(t)function to compute mean obliquity of the ecliptic in arcseconds
  • precesthis function precesses equatorial rectangular coordinates from
  • resume
  • setdtthis function allows for the specification of the delta-t value
  • setmodthis function allows the user to specify the 'mode' value,
  • sidtimthis function computes the greenwich sidereal time
  • spinthis function transforms a vector from one coordinate system
  • tercelthis function rotates a vector from the terrestrial to the
  • wobblethis function corrects a vector in the itrs (a rotating earth-
  • demo_tercel.m
  • View all files
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A MATLAB Script for Terrestrial and Celestial Coordinate Conversion


David Eagle (view profile)


MATLAB functions and script for performing terrestrial to/from celestial coordinate transformations.

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PDF document, two MATLAB functions and a companion demonstration script that can be used to rotate a vector to and from the terrestrial and celestial systems. The first function transforms a vector in the International Terrestrial Reference System (ITRS; a rotating earth-fixed system) to the Geocentric Celestial Reference System (GCRS; a local space-fixed system) by applying rotations for polar motion, earth rotation, nutation, precession, and the dynamical-to-gcrs frame tie. The second MATLAB function performs the GCRS-to-ITRS transformation.

MATLAB release MATLAB 7.12 (R2011a)
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