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
    or...
       
    Reply
    Re: Pear shaped Earth
    From: Peter Fogg
    Date: 2002 Oct 2, 16:28 +1000

    David Weilacher wrote:
    
    > Can anyone give me a numerical representation of the shape of earth?  I'm
    > thinking something like the length of a line of latitude for each 10 degrees
    > north and south of the equator.
    
    I'm told that Meridional Distances do indicate this:
    
    10 d lat  597.11
    20        1194.58
    30        1792.72
    40        2391.75
    50        2991.82
    60        3592.91
    70        4194.91
    80        4797.59
    90        5400.63
    
    so, if I've understood correctly, a degree at 10d of lat.is 59.71 nm, and a
    degree at 90d of lat. is 60.007 nm.
    
    
    

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

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

    Email Settings

    Posting 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