Orbital elements: Difference between revisions

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=={{header|J}}==
{{trans|Raku}}<lang J>NB. euler rotation matrix le,ftleft hand rule
NB. x: axis (0, 1 or 2), y: angle in radians
R=: {{ ((2 1,:1 2) o.(,-)y*_1^2|x)(,&.>/~0 1 2-.x)} =i.3 }}
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