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EarthLocation.get_gcrs_posvel is innacurate #6697

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#6861
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EarthLocation.get_gcrs_posvel is innacurate#6697
#6861
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@StuartLittlefair
StuartLittlefair
opened on Oct 9, 2017

Bit of an embarrassing one this, but my own routine get_gcrs_posvel assumes the rotation axis of the earth is aligned with the GCRS pole. This introduces velocities errors on the order of 1 meter/sec

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