NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Almanac status and history: WAS Historical Lunars : take in account 'delta-T' or ignore it ?
From: James N Wilson
Date: 2009 Dec 17, 17:08 -0800
From: James N Wilson
Date: 2009 Dec 17, 17:08 -0800
Your discussion of the JPL work on planetary ephemerides reminds me of my first spacecraft, Mariner 2 to Venus in 1962. The JPL deep space network had just completed a radar bounce off Venus, to increase the precision of the astronomical unit so that we could make a close approach to the planet. Without that, the mission would not have been possible. Jim Wilson ____________________________________________________________ Hotel Hotel pics, info and virtual tours. Click here to book a hotel online. -- NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList+@fer3.com
