Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
    Venus at inferior conjunction
    From: Frank Reed
    Date: 2017 Mar 20, 17:36 -0700

    Venus can swing by the Sun at unusually high ecliptic latitude. On March 25, Venus will pass the Sun, and Venus and the Sun will be on the same ecliptic longitude. Venus will be as directly in line with the Sun as it can be on this orbital cycle, but its ecliptic latitude will still be 8.2°. This means you'll be able to observe Venus in daylight with a small telescope as a fine thin crescent, but thanks to the atmosphere of the planet, the crescent can extend more than 180°. This distance at the present inferior conjunction is so large that the extension beyond 180° may be tough to see, but you'll definitely be able to follow the planet right through its minimum approach to the Sun by watching in daylight. The orientation of the crescent will swing around rapidly, changing every day but of course always facing the Sun (here's a photo of this rotation, already underway posted just yesterday at spaceweather.com). Just make sure you set up at a location where you can put the Sun behind a building or a tree.

    Frank Reed

    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