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: ISS Collides with...
    From: Frank Reed
    Date: 2014 Jun 21, 04:56 -0700

    Peter Monta, you wrote:
    "The EXIF header gives 2014-06-18 10:42:46 PM, which would be local time I guess. "

    Aha. Thanks. Given that this is a (recent model) smartphone photo, I think we can probably trust the time to within one second. So given previous stories from Norm that he's in the Bay Area, we can assume Pacific Time. Also assuming that the orbit of the ISS has not changed too much in three days, we can narrow things down pretty quickly. The ISS would have been in that position relative to the pointer stars of the Big Dipper at 10:42:46 PM PDT from a location of 37.40° N, 122.09° W. That's in Mountain View, CA, which, if I recall, Peter, isn't far from your location last time we played this satellite fix game. Given the various uncertainties from eyeballing the image and other factors, I would trust this position to +/-0.05° or +/-3 nautical miles. So Norm, how close are we?

    -FER
    PS: And I'll mention once again, that this sort of visual satellite observation can be the easiest form of modern celestial navigation.

       
    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