Equatorial to Ecliptic

				x, y, z equatorial		x, y, z ecliptic
1	0	0
0	cos e	sin e	.		=
0	-sin e	cos e

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Ecliptic to Equatorial

				x, y, z equatorial		x, y, z ecliptic
1	0	0
0	cos e	-sin e	.		=
0	sin e	cos e