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SLA_RVLG - RV Corrn to Local Group   

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 $[\,\alpha,\delta\,]$ (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.


next up previous
Next: SLA_RVLSRD - RV Corrn to Dynamical LSR
Up: SUBPROGRAM SPECIFICATIONS
Previous: SLA_RVGALC - RV Corrn to Galactic Centre

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