Hipparcos to FK5, no P.M. SLA_HFK5Z
CALL sla_HFK5Z (RH, DH, EPOCH, R5, D5, DR5, DD5)
RH | D | Hipparcos (radians) |
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DH | D | Hipparcos (radians) |
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EPOCH | D | Julian epoch (TDB) |
R5 | D | J2000.0 FK5 (radians) |
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D5 | D | J2000.0 FK5 (radians) |
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DR5 | D | J2000.0 FK5 proper motion in (radians per Julian year) |
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DD5 | D | FK5 J2000.0 proper motion in (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.