Initial commit

author: Joseph Hunkeler <jhunkeler@gmail.com> 2015-03-04 21:21:30 -0500
committer: Joseph Hunkeler <jhunkeler@gmail.com> 2015-03-04 21:21:30 -0500
commit: d54fe7c1f704a63824c5bfa0ece65245572e9b27 (patch)
tree: afc52015ffc2c74e0266653eecef1c8ef8ba5d91 /src/slalib/sun67.htx/node152.html
download: calfuse-d54fe7c1f704a63824c5bfa0ece65245572e9b27.tar.gz
1 files changed, 145 insertions, 0 deletions
diff --git a/src/slalib/sun67.htx/node152.html b/src/slalib/sun67.htx/node152.html
new file mode 100644
index 0000000..9e5ea39
--- /dev/null
+++ b/src/slalib/sun67.htx/node152.html
@@ -0,0 +1,145 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
+<!--Converted with LaTeX2HTML 97.1 (release) (July 13th, 1997)
+ by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippman, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>SLA_PREC - Precession Matrix (FK5)</TITLE>
+<META NAME="description" CONTENT="SLA_PREC - Precession Matrix (FK5)">
+<META NAME="keywords" CONTENT="sun67">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso_8859_1">
+<LINK REL="STYLESHEET" HREF="sun67.css">
+<LINK REL="next" HREF="node153.html">
+<LINK REL="previous" HREF="node151.html">
+<LINK REL="up" HREF="node13.html">
+<LINK REL="next" HREF="node153.html">
+</HEAD>
+<BODY >
+<BR> <HR>
+<A NAME="tex2html1946" HREF="node153.html">
+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> 
+<A NAME="tex2html1944" HREF="node13.html">
+<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> 
+<A NAME="tex2html1938" HREF="node151.html">
+<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="previous_motif.gif"></A>   <A HREF="sun67.html#stardoccontents"><IMG  ALIGN="BOTTOM" BORDER="0"
+ SRC="contents_motif.gif"></A>
+<BR>
+<B> Next:</B> <A NAME="tex2html1947" HREF="node153.html">SLA_PRECES - Precession</A>
+<BR>
+<B>Up:</B> <A NAME="tex2html1945" HREF="node13.html">SUBPROGRAM SPECIFICATIONS</A>
+<BR>
+<B> Previous:</B> <A NAME="tex2html1939" HREF="node151.html">SLA_PREBN - Precession Matrix (FK4)</A>
+<BR> <HR> <P>
+<P><!--End of Navigation Panel-->
+<H2><A NAME="SECTION0004139000000000000000">SLA_PREC - Precession Matrix (FK5)</A>
+<A NAME="xref_SLA_PREC">&#160;</A><A NAME="SLA_PREC">&#160;</A>
+</H2>
+       <DL>
+<DT><STRONG>ACTION:</STRONG>
+<DD>Form the matrix of precession between two epochs (IAU 1976, FK5).
+<DT><STRONG>CALL:</STRONG>
+<DD><TT>CALL sla_PREC (EP0, EP1, RMATP)</TT>
+<P>       </DL>
+<P>     <DL>
+<DT><STRONG>GIVEN:</STRONG>
+<DD>
+<BR>
+<TABLE CELLPADDING=3>
+<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>EP0</EM></TD>
+<TH ALIGN="LEFT"><B>D</B></TH>
+<TD ALIGN="LEFT" NOWRAP>beginning epoch</TD>
+</TR>
+<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>EP1</EM></TD>
+<TD ALIGN="LEFT"><B>D</B></TD>
+<TD ALIGN="LEFT" NOWRAP>ending epoch</TD>
+</TR>
+</TABLE></DL>
+<P>     <DL>
+<DT><STRONG>RETURNED:</STRONG>
+<DD>
+<BR>
+<TABLE CELLPADDING=3>
+<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>RMATP</EM></TD>
+<TH ALIGN="LEFT"><B>D(3,3)</B></TH>
+<TD ALIGN="LEFT" NOWRAP>precession matrix</TD>
+</TR>
+</TABLE></DL>
+<P>      <DL>
+<DT><STRONG>NOTES:</STRONG>
+<DD><DL COMPACT>
+<DT>1.
+<DD>The epochs are TDB Julian epochs.
+<DT>2.
+<DD>The matrix is in the sense:
+<BLOCKQUOTE><B>v</B><SUB>1</SUB> =  <B>M</B><IMG WIDTH="7" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img72.gif"
+ ALT="$\cdot$"><B>v</B><SUB>0</SUB></BLOCKQUOTE>
+        where <B>v</B><SUB>1</SUB> is the star vector relative to the
+        mean equator and equinox of epoch EP1, <B>M</B> is the
+        <IMG WIDTH="39" HEIGHT="25" ALIGN="MIDDLE" BORDER="0"
+ SRC="img18.gif"
+ ALT="$3\times3$"> matrix RMATP and
+        <B>v</B><SUB>0</SUB> is the star vector relative to the
+        mean equator and equinox of epoch EP0.
+  <DT>3.
+<DD>Though the matrix method itself is rigorous, the precession
+        angles are expressed through canonical polynomials which are
+        valid only for a limited time span.  There are also known
+        errors in the IAU precession rate.  The absolute accuracy
+        of the present formulation is better than 
+      <IMG WIDTH="23" HEIGHT="18" ALIGN="BOTTOM" BORDER="0"
+ SRC="img25.gif"
+ ALT="$0\hspace{-0.05em}^{'\hspace{-0.1em}'}\hspace{-0.4em}.1$">    from
+        1960AD to 2040AD, better than <IMG WIDTH="17" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img140.gif"
+ ALT="$1\hspace{-0.05em}^{'\hspace{-0.1em}'}$"> from 1640AD to 2360AD,
+        and remains below <IMG WIDTH="17" HEIGHT="18" ALIGN="BOTTOM" BORDER="0"
+ SRC="img75.gif"
+ ALT="$3\hspace{-0.05em}^{'\hspace{-0.1em}'}$"> for the whole of the period
+        500BC to 3000AD.  The errors exceed <IMG WIDTH="25" HEIGHT="18" ALIGN="BOTTOM" BORDER="0"
+ SRC="img74.gif"
+ ALT="$10\hspace{-0.05em}^{'\hspace{-0.1em}'}$"> outside the
+        range 1200BC to 3900AD, exceed <IMG WIDTH="33" HEIGHT="18" ALIGN="BOTTOM" BORDER="0"
+ SRC="img141.gif"
+ ALT="$100\hspace{-0.05em}^{'\hspace{-0.1em}'}$"> outside 4200BC to
+        5600AD and exceed <IMG WIDTH="41" HEIGHT="18" ALIGN="BOTTOM" BORDER="0"
+ SRC="img142.gif"
+ ALT="$1000\hspace{-0.05em}^{'\hspace{-0.1em}'}$"> outside 6800BC to 8200AD.
+        The SLALIB routine sla_PRECL implements a more elaborate
+        model which is suitable for problems spanning several
+        thousand years.
+ </DL></DL>
+<P>     <DL>
+<DT><STRONG>REFERENCES:</STRONG>
+<DD><DL COMPACT>
+<DT>1.
+<DD>Lieske, J.H., 1979. <I>Astr.Astrophys.</I> <B>73</B>, 282;
+equations 6 &amp; 7, p283.
+<DT>2.
+<DD>Kaplan, G.H., 1981. <I>USNO circular no. 163</I>, pA2.
+ </DL></DL>
+<BR> <HR>
+<A NAME="tex2html1946" HREF="node153.html">
+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> 
+<A NAME="tex2html1944" HREF="node13.html">
+<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> 
+<A NAME="tex2html1938" HREF="node151.html">
+<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="previous_motif.gif"></A>   <A HREF="sun67.html#stardoccontents"><IMG  ALIGN="BOTTOM" BORDER="0"
+ SRC="contents_motif.gif"></A>
+<BR>
+<B> Next:</B> <A NAME="tex2html1947" HREF="node153.html">SLA_PRECES - Precession</A>
+<BR>
+<B>Up:</B> <A NAME="tex2html1945" HREF="node13.html">SUBPROGRAM SPECIFICATIONS</A>
+<BR>
+<B> Previous:</B> <A NAME="tex2html1939" HREF="node151.html">SLA_PREBN - Precession Matrix (FK4)</A>
+<BR> <HR> <P>
+<P><!--End of Navigation Panel-->
+<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>
+</ADDRESS>
+</BODY>
+</HTML>
author	Joseph Hunkeler <jhunkeler@gmail.com>	2015-03-04 21:21:30 -0500
committer	Joseph Hunkeler <jhunkeler@gmail.com>	2015-03-04 21:21:30 -0500
commit	d54fe7c1f704a63824c5bfa0ece65245572e9b27 (patch)
tree	afc52015ffc2c74e0266653eecef1c8ef8ba5d91 /src/slalib/sun67.htx/node152.html
download	calfuse-d54fe7c1f704a63824c5bfa0ece65245572e9b27.tar.gz