Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: Aa-56 ephemeris routines from http://www.moshier.net/
    From: Sheoran G
    Date: 2013 Nov 5, 16:27 -0800

    Hi Mike,

    Can you please send me the modified routines DLL?

    Can it be used in Excel VBA?


    [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.

    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site