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    Re: French Bureau of Longitude in 1885
    From: Paul Hirose
    Date: 2016 Oct 03, 14:38 -0700

    Kermit is perhaps too pessimistic about French contributions to
    fundamental astronomy being unknown to English speakers. The names
    Pierre Bretagnon, Nicole Capitaine, and Agnes Fienga are all familiar to
    me, about as familiar as Myles Standish and George Kaplan in the US, or
    Patrick Wallace and Catherine Hohenkerk in the UK.
    In my free SofaJpl Windows astronomy "engine" there a several bits of
    • IAU SOFA routines EPV00 (position and velocity of Earth). "The
    function is a SIMPLIFIED SOLUTION from the planetary theory VSOP2000 (X.
    Moisson, P. Bretagnon, 2001, Celes. Mechanics &  Dyn. Astron., 80, 3/4,
    205-213) and is an adaptation of original Fortran code supplied by P.
    Bretagnon (private comm., 2000)."
    • IAU SOFA routine PLAN94 (position and velocity of the planets). "The
    algorithm is due to J.L. Simon, P. Bretagnon, J. Chapront, M.
    Chapront-Touze, G. Francou and J. Laskar (Bureau des Longitudes, Paris,
    • IAU 2006 precession model. "This function returns the set of equinox
    based angles for the Capitaine et al. "P03" precession theory, adopted
    by the IAU in 2006."
    • Long term precession model. "New precession expressions, valid for
    long time intervals," J. Vondrák, N. Capitaine, and P. Wallace, A&A 534,
    A22 (2011). Fienga is also cited in this work.
    Unfortunately, the IMPOP ephemerides are not compatible with SofaJpl.
    They are available in a format compatible with the JPL binary
    ephemerides, but in SofaJpl 2.0 I changed to a streaming binary format.
    It eliminates problems with fixed length tables and records, but is
    unique to my software.

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