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: venus
    From: Frank Reed CT
    Date: 2004 Oct 13, 03:00 EDT
    George H wrote:
    "I get 16d 05.1'; Frank
    calculates 16d 05.5'. So there's a discrepancy of 0.4' between us,
    somewhere, in the process of allowing for semidiameter(s) and clearing the
    lunar distance. Not an enormous divergence, and certainly much smaller than
    the difference Michael Dorl observes with his measured distances. But
    clearing the distance and allowing for semidiameter should be a rather
    exact science, so I wonder why we disagree by that amount. It might be
    enlightening to track it down."

    Thanks for questioning this. It could easily be that I've got a sign wrong somewhere or something like that. I'll see what I can find. And thanks also to Fred H, Herbert P, and Michael D for posting their calculations which all seem to differ from mine. By the way, does anyone do oblateness the way Chauvenet does? That's how my calculator does it.

    Frank R
    [ ] Mystic, Connecticut
    [X] Chicago, Illinois
    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)