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- ACTION:
- Velocity component in a given direction due to the combination
of the rotation of the Galaxy and the motion of the Galaxy
relative to the mean motion of the local group.
- CALL:
- R = sla_RVLG (R2000, D2000)
- GIVEN:
-
R2000,D2000 |
R |
J2000.0 mean (radians) |
- RETURNED:
-
sla_RVLG |
R |
Component of solar (n.b.)
motion in direction R2000,D2000 (km s-1) |
- NOTE:
- Sign convention: the result is positive when
the Sun is receding from the given point on the sky.
- REFERENCE:
- IAU Trans. 1976. 16B, p201.
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SLALIB --- Positional Astronomy Library
Starlink User Note 67
P. T. Wallace
12 October 1999
E-mail:ptw@star.rl.ac.uk