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<font color="#ffffff" face="helvetica, arial">&nbsp;<br><big><big><strong>novas.compat.eph_manager</strong></big></big></font></td
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<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Modules</strong></big></font></td></tr>
    
<tr><td bgcolor="#aa55cc"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><table width="100%" summary="list"><tr><td width="25%" valign=top><a href="os.html">os</a><br>
</td><td width="25%" valign=top><a href="sys.html">sys</a><br>
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<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Functions</strong></big></font></td></tr>
    
<tr><td bgcolor="#eeaa77"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><dl><dt><a name="-POINTER"><strong>POINTER</strong></a>(...)</dt></dl>
 <dl><dt><a name="-addressof"><strong>addressof</strong></a>(...)</dt><dd><tt><a href="#-addressof">addressof</a>(C&nbsp;instance)&nbsp;-&gt;&nbsp;integer<br>
Return&nbsp;the&nbsp;address&nbsp;of&nbsp;the&nbsp;C&nbsp;instance&nbsp;internal&nbsp;buffer</tt></dd></dl>
 <dl><dt><a name="-alignment"><strong>alignment</strong></a>(...)</dt><dd><tt><a href="#-alignment">alignment</a>(C&nbsp;type)&nbsp;-&gt;&nbsp;integer<br>
<a href="#-alignment">alignment</a>(C&nbsp;instance)&nbsp;-&gt;&nbsp;integer<br>
Return&nbsp;the&nbsp;alignment&nbsp;requirements&nbsp;of&nbsp;a&nbsp;C&nbsp;instance</tt></dd></dl>
 <dl><dt><a name="-byref"><strong>byref</strong></a>(...)</dt><dd><tt><a href="#-byref">byref</a>(C&nbsp;instance[,&nbsp;offset=0])&nbsp;-&gt;&nbsp;byref-object<br>
Return&nbsp;a&nbsp;pointer&nbsp;lookalike&nbsp;to&nbsp;a&nbsp;C&nbsp;instance,&nbsp;only&nbsp;usable<br>
as&nbsp;function&nbsp;argument</tt></dd></dl>
 <dl><dt><a name="-ephem_open"><strong>ephem_open</strong></a>(ephem_name<font color="#909090">=None</font>)</dt><dd><tt>This&nbsp;function&nbsp;opens&nbsp;a&nbsp;JPL&nbsp;planetary&nbsp;ephemeris&nbsp;file&nbsp;and&nbsp;sets&nbsp;initial<br>
values.&nbsp;This&nbsp;function&nbsp;must&nbsp;be&nbsp;called&nbsp;prior&nbsp;to&nbsp;calls&nbsp;to&nbsp;the&nbsp;other&nbsp;JPL<br>
ephemeris&nbsp;functions.<br>
&nbsp;<br>
Parameters<br>
----------<br>
ephem_name&nbsp;:&nbsp;string<br>
&nbsp;&nbsp;&nbsp;&nbsp;Name&nbsp;(including&nbsp;path&nbsp;if&nbsp;necessary)&nbsp;of&nbsp;direct-access&nbsp;JPL<br>
&nbsp;&nbsp;&nbsp;&nbsp;ephemeris&nbsp;file.<br>
&nbsp;<br>
Returns<br>
-------<br>
jd_begin&nbsp;:&nbsp;float<br>
&nbsp;&nbsp;&nbsp;&nbsp;Beginning&nbsp;Julian&nbsp;date&nbsp;of&nbsp;the&nbsp;ephemeris&nbsp;file.<br>
jd_end&nbsp;:&nbsp;float<br>
&nbsp;&nbsp;&nbsp;&nbsp;Ending&nbsp;Julian&nbsp;date&nbsp;of&nbsp;the&nbsp;ephemeris&nbsp;file.<br>
de_number&nbsp;:&nbsp;integer<br>
&nbsp;&nbsp;&nbsp;&nbsp;DE&nbsp;number&nbsp;of&nbsp;the&nbsp;ephemeris&nbsp;file&nbsp;opened.<br>
&nbsp;<br>
References<br>
----------<br>
..&nbsp;[R1]&nbsp;Standish,&nbsp;E.M.&nbsp;and&nbsp;Newhall,&nbsp;X&nbsp;X&nbsp;(1988).&nbsp;"The&nbsp;JPL&nbsp;Export<br>
&nbsp;&nbsp;&nbsp;&nbsp;Planetary&nbsp;Ephemeris";&nbsp;JPL&nbsp;document&nbsp;dated&nbsp;17&nbsp;June&nbsp;1988.</tt></dd></dl>
 <dl><dt><a name="-get_errno"><strong>get_errno</strong></a>(...)</dt></dl>
 <dl><dt><a name="-planet_ephemeris"><strong>planet_ephemeris</strong></a>(tjd, target, center)</dt><dd><tt>This&nbsp;function&nbsp;accesses&nbsp;the&nbsp;JPL&nbsp;planetary&nbsp;ephemeris&nbsp;to&nbsp;give&nbsp;the<br>
position&nbsp;and&nbsp;velocity&nbsp;of&nbsp;the&nbsp;target&nbsp;object&nbsp;with&nbsp;respect&nbsp;to&nbsp;the<br>
center&nbsp;object.<br>
&nbsp;<br>
Parameters<br>
----------<br>
tjd&nbsp;:&nbsp;tuple&nbsp;of&nbsp;floats,&nbsp;of&nbsp;length&nbsp;2<br>
&nbsp;&nbsp;&nbsp;&nbsp;Julian&nbsp;date&nbsp;split&nbsp;into&nbsp;two&nbsp;parts.&nbsp;'tjd'&nbsp;may&nbsp;be&nbsp;split&nbsp;any&nbsp;way<br>
&nbsp;&nbsp;&nbsp;&nbsp;(although&nbsp;the&nbsp;first&nbsp;element&nbsp;is&nbsp;usually&nbsp;the&nbsp;"integer"&nbsp;part,&nbsp;and<br>
&nbsp;&nbsp;&nbsp;&nbsp;the&nbsp;second&nbsp;element&nbsp;is&nbsp;the&nbsp;"fractional"&nbsp;part).&nbsp;&nbsp;Julian&nbsp;date&nbsp;is&nbsp;in<br>
&nbsp;&nbsp;&nbsp;&nbsp;the&nbsp;TDB&nbsp;or&nbsp;"T_eph"&nbsp;time&nbsp;scale.<br>
target&nbsp;:&nbsp;{0,&nbsp;...,&nbsp;13}<br>
&nbsp;&nbsp;&nbsp;&nbsp;Number&nbsp;of&nbsp;'target'&nbsp;point.<br>
center&nbsp;:&nbsp;{0,&nbsp;...,&nbsp;13}<br>
&nbsp;&nbsp;&nbsp;&nbsp;Number&nbsp;of&nbsp;'center'&nbsp;(origin)&nbsp;point.<br>
&nbsp;<br>
&nbsp;&nbsp;&nbsp;&nbsp;The&nbsp;numbering&nbsp;convention&nbsp;for&nbsp;'target'&nbsp;and'center'&nbsp;is:<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;0&nbsp;...&nbsp;Mercury<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;1&nbsp;...&nbsp;Venus<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;2&nbsp;...&nbsp;Earth<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;3&nbsp;...&nbsp;Mars<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;4&nbsp;...&nbsp;Jupiter<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;5&nbsp;...&nbsp;Saturn<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;6&nbsp;...&nbsp;Uranus<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;7&nbsp;...&nbsp;Neptune<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;8&nbsp;...&nbsp;Pluto<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;9&nbsp;...&nbsp;Moon<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;10&nbsp;...&nbsp;Sun<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;11&nbsp;...&nbsp;Solar&nbsp;system&nbsp;bary.<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;12&nbsp;...&nbsp;Earth-Moon&nbsp;bary.<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;13&nbsp;...&nbsp;Nutations&nbsp;(long&nbsp;int.&nbsp;and&nbsp;obliq.)<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(If&nbsp;nutations&nbsp;are&nbsp;desired,&nbsp;set&nbsp;'target'&nbsp;=&nbsp;13;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'center'&nbsp;will&nbsp;be&nbsp;ignored&nbsp;on&nbsp;that&nbsp;call.)<br>
&nbsp;<br>
Returns<br>
-------<br>
position&nbsp;:&nbsp;tuple&nbsp;of&nbsp;floats,&nbsp;of&nbsp;length&nbsp;3<br>
&nbsp;&nbsp;&nbsp;&nbsp;Position&nbsp;vector&nbsp;array&nbsp;of&nbsp;target&nbsp;relative&nbsp;to&nbsp;center,&nbsp;measured&nbsp;in<br>
&nbsp;&nbsp;&nbsp;&nbsp;AU.<br>
velocity&nbsp;:&nbsp;tuple&nbsp;of&nbsp;floats,&nbsp;of&nbsp;length&nbsp;3<br>
&nbsp;&nbsp;&nbsp;&nbsp;Velocity&nbsp;vector&nbsp;array&nbsp;of&nbsp;target&nbsp;relative&nbsp;to&nbsp;center,&nbsp;measured&nbsp;in<br>
&nbsp;&nbsp;&nbsp;&nbsp;AU/day.<br>
&nbsp;<br>
References<br>
----------<br>
..&nbsp;[R1]&nbsp;Standish,&nbsp;E.M.&nbsp;and&nbsp;Newhall,&nbsp;X&nbsp;X&nbsp;(1988).&nbsp;"The&nbsp;JPL&nbsp;Export<br>
&nbsp;&nbsp;&nbsp;&nbsp;Planetary&nbsp;Ephemeris";&nbsp;JPL&nbsp;document&nbsp;dated&nbsp;17&nbsp;June&nbsp;1988.</tt></dd></dl>
 <dl><dt><a name="-pointer"><strong>pointer</strong></a>(...)</dt></dl>
 <dl><dt><a name="-resize"><strong>resize</strong></a>(...)</dt><dd><tt>Resize&nbsp;the&nbsp;memory&nbsp;buffer&nbsp;of&nbsp;a&nbsp;ctypes&nbsp;instance</tt></dd></dl>
 <dl><dt><a name="-set_conversion_mode"><strong>set_conversion_mode</strong></a>(...)</dt><dd><tt><a href="#-set_conversion_mode">set_conversion_mode</a>(encoding,&nbsp;errors)&nbsp;-&gt;&nbsp;(previous-encoding,&nbsp;previous-errors)<br>
&nbsp;<br>
Set&nbsp;the&nbsp;encoding&nbsp;and&nbsp;error&nbsp;handling&nbsp;ctypes&nbsp;uses&nbsp;when&nbsp;converting<br>
between&nbsp;unicode&nbsp;and&nbsp;strings.&nbsp;&nbsp;Returns&nbsp;the&nbsp;previous&nbsp;values.</tt></dd></dl>
 <dl><dt><a name="-set_errno"><strong>set_errno</strong></a>(...)</dt></dl>
 <dl><dt><a name="-sizeof"><strong>sizeof</strong></a>(...)</dt><dd><tt><a href="#-sizeof">sizeof</a>(C&nbsp;type)&nbsp;-&gt;&nbsp;integer<br>
<a href="#-sizeof">sizeof</a>(C&nbsp;instance)&nbsp;-&gt;&nbsp;integer<br>
Return&nbsp;the&nbsp;size&nbsp;in&nbsp;bytes&nbsp;of&nbsp;a&nbsp;C&nbsp;instance</tt></dd></dl>
 <dl><dt><a name="-split"><strong>split</strong></a>(tt)</dt><dd><tt>This&nbsp;function&nbsp;breaks&nbsp;up&nbsp;a&nbsp;float&nbsp;number&nbsp;into&nbsp;a&nbsp;double&nbsp;integer&nbsp;part<br>
and&nbsp;a&nbsp;fractional&nbsp;part.<br>
&nbsp;<br>
Parameters<br>
----------<br>
tt&nbsp;:&nbsp;float<br>
&nbsp;&nbsp;&nbsp;&nbsp;Input&nbsp;number.<br>
&nbsp;<br>
Returns<br>
-------<br>
fr&nbsp;:&nbsp;tuple&nbsp;of&nbsp;floats,&nbsp;of&nbsp;length&nbsp;2<br>
&nbsp;&nbsp;&nbsp;&nbsp;Output&nbsp;tuple;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fr[0]&nbsp;contains&nbsp;integer&nbsp;part,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fr[1]&nbsp;contains&nbsp;fractional&nbsp;part.<br>
&nbsp;&nbsp;&nbsp;&nbsp;For&nbsp;negative&nbsp;input&nbsp;numbers,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fr[0]&nbsp;contains&nbsp;the&nbsp;next&nbsp;more&nbsp;negative&nbsp;integer;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fr[1]&nbsp;contains&nbsp;a&nbsp;positive&nbsp;fraction.<br>
&nbsp;<br>
References<br>
----------<br>
..&nbsp;[R1]&nbsp;Standish,&nbsp;E.M.&nbsp;and&nbsp;Newhall,&nbsp;X&nbsp;X&nbsp;(1988).&nbsp;"The&nbsp;JPL&nbsp;Export<br>
&nbsp;&nbsp;&nbsp;&nbsp;Planetary&nbsp;Ephemeris";&nbsp;JPL&nbsp;document&nbsp;dated&nbsp;17&nbsp;June&nbsp;1988.</tt></dd></dl>
 <dl><dt><a name="-state"><strong>state</strong></a>(jed, target)</dt><dd><tt>This&nbsp;function&nbsp;reads&nbsp;and&nbsp;interpolates&nbsp;the&nbsp;JPL&nbsp;planetary&nbsp;ephemeris<br>
file.<br>
&nbsp;<br>
Parameters<br>
----------<br>
jed&nbsp;:&nbsp;tuple&nbsp;of&nbsp;floats,&nbsp;of&nbsp;length&nbsp;2<br>
&nbsp;&nbsp;&nbsp;&nbsp;Julian&nbsp;date&nbsp;(TDB)&nbsp;at&nbsp;which&nbsp;interpolation&nbsp;is&nbsp;wanted.&nbsp;Any<br>
&nbsp;&nbsp;&nbsp;&nbsp;combination&nbsp;of&nbsp;jed[0]+jed[1]&nbsp;which&nbsp;falls&nbsp;within&nbsp;the&nbsp;time&nbsp;span&nbsp;on<br>
&nbsp;&nbsp;&nbsp;&nbsp;the&nbsp;file&nbsp;is&nbsp;a&nbsp;permissible&nbsp;epoch.&nbsp;See&nbsp;Note&nbsp;[N1]_&nbsp;below.<br>
target&nbsp;:&nbsp;{0,&nbsp;...,&nbsp;10}<br>
&nbsp;&nbsp;&nbsp;&nbsp;The&nbsp;requested&nbsp;body&nbsp;to&nbsp;get&nbsp;data&nbsp;for&nbsp;from&nbsp;the&nbsp;ephemeris&nbsp;file.<br>
&nbsp;&nbsp;&nbsp;&nbsp;The&nbsp;designation&nbsp;of&nbsp;the&nbsp;astronomical&nbsp;bodies&nbsp;is:<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;0&nbsp;...&nbsp;Mercury<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;1&nbsp;...&nbsp;Venus<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;2&nbsp;...&nbsp;Earth-Moon&nbsp;barycenter<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;3&nbsp;...&nbsp;Mars<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;4&nbsp;...&nbsp;Jupiter<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;5&nbsp;...&nbsp;Saturn<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;6&nbsp;...&nbsp;Uranus<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;7&nbsp;...&nbsp;Neptune<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;8&nbsp;...&nbsp;Pluto<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;9&nbsp;...&nbsp;geocentric&nbsp;Moon<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;10&nbsp;...&nbsp;Sun<br>
&nbsp;<br>
Returns<br>
-------<br>
target_pos&nbsp;:&nbsp;tuple&nbsp;of&nbsp;floats,&nbsp;of&nbsp;length&nbsp;3<br>
&nbsp;&nbsp;&nbsp;&nbsp;The&nbsp;barycentric&nbsp;position&nbsp;vector&nbsp;array&nbsp;of&nbsp;the&nbsp;requested&nbsp;object,<br>
&nbsp;&nbsp;&nbsp;&nbsp;in&nbsp;AU.<br>
target_vel&nbsp;:&nbsp;tuple&nbsp;of&nbsp;floats,&nbsp;of&nbsp;length&nbsp;3<br>
&nbsp;&nbsp;&nbsp;&nbsp;The&nbsp;barycentric&nbsp;velocity&nbsp;vector&nbsp;array&nbsp;of&nbsp;the&nbsp;requested&nbsp;object,<br>
&nbsp;&nbsp;&nbsp;&nbsp;in&nbsp;AU/Day.<br>
&nbsp;<br>
Both&nbsp;vectors&nbsp;are&nbsp;referenced&nbsp;to&nbsp;the&nbsp;Earth&nbsp;mean&nbsp;equator&nbsp;and&nbsp;equinox&nbsp;of<br>
epoch.<br>
&nbsp;<br>
Notes<br>
-----<br>
..&nbsp;[N1]&nbsp;For&nbsp;ease&nbsp;in&nbsp;programming,&nbsp;the&nbsp;user&nbsp;may&nbsp;put&nbsp;the&nbsp;entire&nbsp;epoch<br>
&nbsp;&nbsp;&nbsp;&nbsp;in&nbsp;jed[0]&nbsp;and&nbsp;set&nbsp;jed[1]&nbsp;=&nbsp;0.&nbsp;For&nbsp;maximum&nbsp;interpolation<br>
&nbsp;&nbsp;&nbsp;&nbsp;accuracy&nbsp;set&nbsp;jed[0]&nbsp;=&nbsp;the&nbsp;most&nbsp;recent&nbsp;midnight&nbsp;at&nbsp;or&nbsp;before<br>
&nbsp;&nbsp;&nbsp;&nbsp;interpolation&nbsp;epoch,&nbsp;and&nbsp;set&nbsp;jed[1]&nbsp;=&nbsp;fractional&nbsp;part&nbsp;of&nbsp;a&nbsp;day<br>
&nbsp;&nbsp;&nbsp;&nbsp;elapsed&nbsp;between&nbsp;jed[0]&nbsp;and&nbsp;epoch.&nbsp;As&nbsp;an&nbsp;alternative,&nbsp;it&nbsp;may<br>
&nbsp;&nbsp;&nbsp;&nbsp;prove&nbsp;convenient&nbsp;to&nbsp;set&nbsp;jed[0]&nbsp;=&nbsp;some&nbsp;fixed&nbsp;epoch,&nbsp;such&nbsp;as&nbsp;start<br>
&nbsp;&nbsp;&nbsp;&nbsp;of&nbsp;the&nbsp;integration&nbsp;and&nbsp;jed[1]&nbsp;=&nbsp;elapsed&nbsp;interval&nbsp;between&nbsp;then<br>
&nbsp;&nbsp;&nbsp;&nbsp;and&nbsp;epoch.<br>
&nbsp;<br>
References<br>
----------<br>
..&nbsp;[R1]&nbsp;Standish,&nbsp;E.M.&nbsp;and&nbsp;Newhall,&nbsp;X&nbsp;X&nbsp;(1988).&nbsp;"The&nbsp;JPL&nbsp;Export<br>
&nbsp;&nbsp;&nbsp;&nbsp;Planetary&nbsp;Ephemeris";&nbsp;JPL&nbsp;document&nbsp;dated&nbsp;17&nbsp;June&nbsp;1988.</tt></dd></dl>
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