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astronomy/source/kotlin/doc/rotation-ecl-eqj.md
Don Cross 281180db24 Use consistent descriptions of EQJ, ECL. 
Use consistent wording for these two orientation systems:
EQJ = J2000 mean equator
ECL = J2000 mean ecliptic
2022-12-08 16:16:41 -05:00

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//astronomy/io.github.cosinekitty.astronomy/rotationEclEqj

rotationEclEqj

fun rotationEclEqj(): RotationMatrix

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

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

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