NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Navigation without Leap Seconds
From: Frank Reed
Date: 2008 Apr 23, 22:35 -0400
From: Frank Reed
Date: 2008 Apr 23, 22:35 -0400
George Huxtable, you wrote: "I wonder how confident Geoffrey really is about that projection into the future, to within a second "or so"." I usually figure something like 3 or 4 seconds for an expectation value of error in delta-T by 2050 using the standard estimated values. In a long-term almanac, I would want something that indicates the estimated value of delta-T for that year AND provides instructions for amending the tables based on the known value of delta-T when that year finally rolls around. This is actually a very similar problem to the issue of navigating without leap seconds. -FER --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
