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SLA_DS2C6 - Spherical Pos/Vel to Cartesian   

ACTION:
Conversion of position & velocity in spherical coordinates to Cartesian coordinates (double precision).

CALL:
CALL sla_DS2C6 (A, B, R, AD, BD, RD, V)

GIVEN:

A D longitude (radians) - for example $\alpha$
B D latitude (radians) - for example $\delta$
R D radial coordinate
AD D longitude derivative (radians per unit time)
BD D latitude derivative (radians per unit time)
RD D radial derivative

RETURNED:

V D(6) $[\,x,y,z,\dot{x},\dot{y},\dot{z}\,]$


next up previous
Next: SLA_DS2TP - Spherical to Tangent Plane
Up: SUBPROGRAM SPECIFICATIONS
Previous: SLA_DRANRM - Put Angle into Range

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