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//astronomy/io.github.cosinekitty.astronomy/rotationEqjEcl

rotationEqjEcl

fun rotationEqjEcl(): RotationMatrix

Calculates a rotation matrix from J2000 mean equator (EQJ) to J2000 mean ecliptic (ECL).

This is one of the family of functions that returns a rotation matrix for converting from one orientation to another. Source: EQJ = equatorial system, using equator at J2000 epoch. Target: ECL = ecliptic system, using equator at J2000 epoch.