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SLA_PVOBS - Observatory Position & Velocity   

ACTION:
Position and velocity of an observing station.
CALL:
CALL sla_PVOBS (P, H, STL, PV)

GIVEN:

P D latitude (geodetic, radians)
H D height above reference spheroid (geodetic, metres)
STL D local apparent sidereal time (radians)

RETURNED:

PV D(6) $[\,x,y,z,\dot{x},\dot{y},\dot{z}\,]$ (AU, AU s-1, true equator and equinox of date)

NOTE:
IAU 1976 constants are used.


next up previous
Next: SLA_PXY - Apply Linear Model
Up: SUBPROGRAM SPECIFICATIONS
Previous: SLA_PV2UE - Position/Velocity to Universal Elements

SLALIB --- Positional Astronomy Library
Starlink User Note 67
P. T. Wallace
12 October 1999
E-mail:ptw@star.rl.ac.uk