Welcome to the NavList Message Boards.

NavList:

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

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    Name or NavList Code:
    Email:
       
    Reply
    Re: The Running Fix on an Ellipsoid
    From: Robin Stuart
    Date: 2017 Feb 5, 11:35 -0800

    Andrés

    You wrote: The only with i do not agree is the claim that: "On the sphere, points on the LoP all lie the same geodesic distance from GP; however this is not true for an ellipsoid".

    Well spotted. I believe the statement to be true but you are correct "this is not the nature of the CoP." or if I may paraphrase "geodesic distances along the surface are not relevant to the problem at hand". It's really an aside or Note to Self. It arose as I contemplated the fact that if the equation ot the LoP or curve constant altitude are the same on the sphere and ellipsoid and asked myself then in what way were they different. On the sphere, because of it's constant curvature, points on the LoP lie all at the same distance from the GP. On the ellipsoid however the curvature is different in different directions and the geodesic distance to different points on the LoP will be as well. Just consider the case of a GP on the equator,

    Regards,

    Robin

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

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

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID Code:

    Custom Index

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

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site