NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Almanac status and history
From: Paul Hirose
Date: 2009 Dec 24, 14:07 -0800
From: Paul Hirose
Date: 2009 Dec 24, 14:07 -0800
antoine.m.couette@club-internet.fr wrote: > For our current times, I understand that the sources of the following > Nautical and Astronomical Almanacs are essentially : > > - the JPL DE20x/LE20x theories by JPL (all being Numerical Integrations) > for the US/UK Astronomical and Nautical Almanacs The Astronomical Almanac used DE405/LE405 from 2003 - 2009. From 1984 to 2002 it used DE200/LE200. I don't know what ephemeris the 2010 Almanac uses. > ONE QUESTION : Are there other different theories currently being the > source of either Astronomical or Nautical Almanacs in other countries ? The Russians have their EPM ephemeris. You can find information at the IAU's Ephemeris Commission page: http://iau-comm4.jpl.nasa.gov/comm4.html -- -- NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList+@fer3.com
