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: Aldebaran occultation / MICA Delta-T Error
    From: Sean C
    Date: 2017 Mar 7, 02:57 -0800

    Okay, with a revised, topocentric SD of the Moon (thanks to Paul), I have arrived at these figures:

    Start: 03:56:46 UT1  (16.269')

    Minimum: 04:17:31 UT1  (12.184')

    End: 04:37:41 UT1  (16.242')

    Paul also mentioned the error in MICA's delta-T prediction. This is also something I have been thinking about lately. I wonder when the USNO will see fit to update the prediction file. See attached graphs for errors.



    File:



    File:



    File:



       
    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