Article View: sci.astro
Article #4026Re: Moon crater viewing
From: Rob DeMillo
Date: Tue, 21 Oct 1986 22:15
Date: Tue, 21 Oct 1986 22:15
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2106 bytes
In article <90@ritcv.UUCP> jaw7509@ritcv.UUCP (John White) writes:
>
> I hate to taunt you all if this is not true, but I seem to
>remember reading that at a certain time, on a certain day, once a year,
>the top edge of a crater on the moon's dark side is visible. If this is
>true and anyone knows about it, (i.e. what day and time), could they
>please pass the info on to me. I've always wanted to see this event, but
>forgot to save the story (if indeed I did read it).
>
> Whitey Johnson.
The lunar revolutions are not *exactly* resonant locked with the earth's.
The result is that about an additional 5% of the moon (2.5% on the east
limb, and 2.5% on the west limb) will periodically be shown throughout the
year. Although this is not much, it does allow for certain craters and
mountain ranges to "peep thru" to viewer's on the earth.
Since the change is, of course, gradually taking place as the year passes,
I doubt that this "mystery crater" *pops* into view on a given night/time.
Although it is entirely possible that an *optimal* day/time was given...
--
--- Rob DeMillo
Madison Academic Computer Center
usenet: {ihnp4,harvard,seismo,topaz,decvax}!uwvax!uwmacc!demillo
ARPA: demillo@unix.macc.wisc.edu (now isn't that easier?)
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!caip!topaz!rutgers!uwvax!uwmacc!demillo From: demillo@uwmacc.UUCP (Rob DeMillo) Newsgroups: sci.astro Subject: Re: Moon crater viewing Message-ID: <394@uwmacc.UUCP> Date: Tue, 21-Oct-86 18:15:27 EDT Article-I.D.: uwmacc.394 Posted: Tue Oct 21 18:15:27 1986 Date-Received: Wed, 22-Oct-86 06:28:54 EDT References: <90@ritcv.UUCP> Reply-To: demillo@uwmacc.UUCP (Rob DeMillo) Distribution: net.astro Organization: UWisconsin-Madison Academic Comp Center Lines: 33