FK5 to Hipparcos
CALL sla_FK52H (R5, D5, DR5, DD5, RH, DH, DRH, DDH)
R5 | D | J2000.0 FK5 α (radians) |
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D5 | D | J2000.0 FK5 δ (radians) |
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DR5 | D | J2000.0 FK5 proper motion in α (radians per Julian year) |
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DD5 | D | J2000.0 FK5 proper motion in δ (radians per Julian year) |
RH | D | Hipparcos α (radians) |
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DH | D | Hipparcos δ (radians) |
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DRH | D | Hipparcos proper motion in α (radians per Julian year) |
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DDH | D | Hipparcos proper motion in δ (radians per Julian year) |
orientation | spin
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mas | mas/y | |
These orientation and spin components are interpreted as axial vectors. An axial vector points at the pole of the rotation and its length is the amount of rotation in radians.