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To Michael Dorl
Can I have a copy of your routines?

Also, have you seen:
Naval Observatory Vector Astrometry Software, C Edition C3.1 (31 Mar 11)
NOVAS is an integrated package of functions for computing various
commonly needed quantities in positional astronomy. The package can
supply, in one or two function calls, the instantaneous coordinates of
any star or planet in a variety of coordinate systems.

You can get it in
http://aa.usno.navy.mil/software/novas/novas_c/novasc_info.php

I have compiled it in VC ok.

regards, Marcelo Sanseau
msanseau(at)gmail com

2013/11/5, Sheoran :
> Hi Mike,
>
> Can you please send me the modified routines DLL?
>
> Can it be used in Excel VBA?
>
> Thanx
> Sheoran
> sheoran19{at}gmail.com
>
> [Note: this message refers to a post by Michal Dorl from 2004 copied below]
> -------------------------------------
> From: Michael Dorl
> Date: 2004 Mar 1, 21:27 -0600
> I was in need of C routines to generate ephemeris data for various bodies
> and came upon the ones at http://www.moshier.net/ called aa-56.
> The description from that site says...
>
>         aa-56.zip: Self-contained ephemeris calculator; size 414 KB.
>
>         C program computes ephemerides of Sun, Moon, planets, comets, and
> stars using rigorous reduction methods from the _Astronomical Almanac_ and
>  related sources. Includes PLAN404 series (see below) for positions of the
> planets, and a long-term extension of modern Lunar theory for the Moon's
> position.    Reads ASCII file catalogues of stars and orbital elements.
> Displays all adjustments as it finds local azimuth and elevation, rise and
> set times, etc. Windows   or MSDOS (Microsoft and Borland), Unix, VAX make
> files. Archive includes MSDOS executable program. Latest update 2003-08-10.
>
>
> The program supplied there generates printed output while what I was looking
> for was a set of subroutines I could call.  So I took the above and turned
> them into
> a callable subroutine.  They have built in definitions for the planets, sun,
> and moon and obtain data for stars and other sun orbiting bodies from user
> supplied files.
> I currently have the modified subroutines as a Microsoft workspace that
> produces a .dll file which can be called from a c or c++ program.
>
> I believe these came from JPL.
>
> If anyone has any interest in these modified routines, let me know.
>
>
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