NavList:

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

HOME

Re: JPL ephemeresis and Nautical Almanac - speed of light question
From: Paul Hughes
Date: 2018 Apr 4, 02:34 -0700

We define time as the length of the year 1900, and its resultant second. Using Sun as your origin requires your translation of that defined Earth based time to one of your origin's. See Seidelmann's Explanatory Supplement to the Astronomical Almanac.

Get a NavList ID Code

A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

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

NavList:

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

Compose Your Message

NavList

What is NavList?

Get a NavList ID Code

Retrieve a NavList ID Code

Email Settings

Custom Index

Add Images & Files
Name or NavList Code:	Email:

Name:
	(please, no nicknames or handles)
Email:

NavList ID Code: