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The tutorial <a href="https://naif.jpl.nasa.gov/pub/naif/toolkit_docs/Tutorials/pdf/individual_docs/23_lunar-earth_pck-fk.pdf" class="">
https://naif.jpl.nasa.gov/pub/naif/toolkit_docs/Tutorials/pdf/individual_docs/23_lunar-earth_pck-fk.pdf</a>
<div class="">as well as <a href="https://naif.jpl.nasa.gov/pub/naif/generic_kernels/pck/aareadme.txt" class="">
https://naif.jpl.nasa.gov/pub/naif/generic_kernels/pck/aareadme.txt</a></div>
<div class="">describe long-term predicts for ITRF93: </div>
<div class="">
<pre style="word-wrap: break-word; white-space: pre-wrap;" class=""><font face="Monaco" size="1" class=""><span style="font-style: normal;" class=""> Low accuracy, long term predict kernel. The extended predict region of this
kernel---the time interval following the end of the predict region of the
input EOP file---does not estimate changes in UT1-TAI. The dates in the
file name are the file's coverage start and stop times:
earth_200101_990628_predict.bpc
</span></font></pre>
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<div class="">But, I believe IERS only provides predicts for 1 year. See <a href="https://www.iers.org/IERS/EN/DataProducts/EarthOrientationData/eop.html" class="">https://www.iers.org/IERS/EN/DataProducts/EarthOrientationData/eop.html</a></div>
<div class="">and EOP2 files from <a href="https://eop2-external.jpl.nasa.gov" class="">https://eop2-external.jpl.nasa.gov</a> are only predicted for about 78 days.</div>
<div class=""><br class="">
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<div class="">What is the source for the long-term prediction in a BPC kernel like <span style="font-family: Monaco; font-size: x-small; white-space: pre-wrap;" class="">earth_200101_990628_predict.bpc?</span></div>
<div class=""><span style="font-family: Monaco; font-size: x-small; white-space: pre-wrap;" class=""><br class="">
</span></div>
<div class=""><span style="font-family: Monaco; font-size: x-small; white-space: pre-wrap;" class="">Thanks,</span></div>
<div class=""><span style="font-family: Monaco; font-size: x-small; white-space: pre-wrap;" class=""><br class="">
</span></div>
<div class=""><span style="font-family: Monaco; font-size: x-small; white-space: pre-wrap;" class="">Troy.</span></div>
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