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SLA_AOPPAT - Update Appt-to-Obs Parameters

ACTION:
Recompute the sidereal time in the apparent to observed place star-independent parameter block.
CALL:
CALL sla_AOPPAT (DATE, AOPRMS)
GIVEN:

DATE D UTC date/time (Modified Julian Date, JD$-$2400000.5)
AOPRMS D(14) star-independent apparent-to-observed parameters:
(1-12)   not required
(13)   longitude + eqn of equinoxes + ``sidereal $\Delta$UT'' (radians)
(14)   not required
RETURNED:

AOPRMS D(14) star-independent apparent-to-observed parameters:
(1-13)   not changed
(14)   local apparent sidereal time (radians)
NOTE:
For more information, see sla_AOPPA.


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SLALIB --- Positional Astronomy Library
Starlink User Note 67
P. T. Wallace
19 December 2005
E-mail:ussc@star.rl.ac.uk

Copyright © 2009 Science and Technology Facilities Council