DE405 ephemeris and EME2000
Orekit assumes orientation for position velocity coordinates provided by
JPL is EME2000 axes.
However most modern ephemerides (DE4xx, INPOP...) are aligned with ICRF
axes.
The frame for the JPL bodies should then be derived from the GCRF frame,
not from EME2000.
References:
http://en.wikipedia.org/wiki/DE400
ftp://ssd.jpl.nasa.gov/pub/eph/export/DE405/de405iom.ps
ftp://ssd.jpl.nasa.gov/pub/eph/export/DE414/de414iom.ps
ftp://ssd.jpl.nasa.gov/pub/eph/planets/ioms/de421.iom.v1.pdf
http://syrte.obspm.fr/jsr/journees2008/Folkner.pdf
http://www.imcce.fr/inpop/
(from redmine: issue id 21, created on 2011-04-13, closed on 2011-04-13)