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<H2><A NAME="SECTION0004159000000000000000">SLA_RVLG - RV Corrn to Local Group</A>
<A NAME="xref_SLA_RVLG"> </A><A NAME="SLA_RVLG"> </A>
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<DT><STRONG>ACTION:</STRONG>
<DD>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.
<P> <DT><STRONG>CALL:</STRONG>
<DD><TT>R = sla_RVLG (R2000, D2000)</TT>
<P> </DL>
<P> <DL>
<DT><STRONG>GIVEN:</STRONG>
<DD>
<BR>
<TABLE CELLPADDING=3>
<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>R2000,D2000</EM></TD>
<TH ALIGN="LEFT"><B>R</B></TH>
<TD ALIGN="LEFT" NOWRAP>J2000.0 mean <IMG WIDTH="42" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img3.gif"
ALT="$[\,\alpha,\delta\,]$"> (radians)</TD>
</TR>
</TABLE></DL>
<P> <DL>
<DT><STRONG>RETURNED:</STRONG>
<DD>
<BR>
<TABLE CELLPADDING=3>
<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>sla_RVLG</EM></TD>
<TH ALIGN="LEFT"><B>R</B></TH>
<TH ALIGN="LEFT" NOWRAP>Component of <B>solar</B> (<I>n.b.</I>)
motion in direction R2000,D2000 (km s<SUP>-1</SUP>)</TH>
</TR>
</TABLE></DL>
<P> <DL>
<DT><STRONG>NOTE:</STRONG>
<DD>Sign convention: the result is positive when
the Sun is receding from the given point on the sky.
</DL>
<P> <DL>
<DT><STRONG>REFERENCE:</STRONG>
<DD><I>IAU Trans.</I> 1976. <B>16B</B>, p201.
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<ADDRESS>
<I>SLALIB --- Positional Astronomy Library<BR>Starlink User Note 67<BR>P. T. Wallace<BR>12 October 1999<BR>E-mail:ptw@star.rl.ac.uk</I>
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