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From: dimario@ihlpg.UUCP (Michael J. DiMario)
Newsgroups: net.space,net.astro
Subject: R.A. DETERMINATION PROBLEM
Message-ID: <1122@ihlpg.UUCP>
Date: Fri, 23-Aug-85 13:59:09 EDT
Article-I.D.: ihlpg.1122
Posted: Fri Aug 23 13:59:09 1985
Date-Received: Sun, 25-Aug-85 03:13:10 EDT
Distribution: net
Organization: AT&T Bell Laboratories
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Xref: watmath net.space:4483 net.astro:949

I am looking for a clear explanation of determining the R.A. of an
object given its R.A. at 0h UT for a meridian at a given time. I seem to
have difficulties w/ this in the field. For example, given that Jupiter
is at R.A. 20 53.0 on Aug 16th at 0h UT, what is its R.A. at 88 degrees
W. longitude and 2200 hours CDT locally? Is this the Hour Angle
and if so, how do you use it? Is there anyone that can advise me on this?

Thank you in advance.

					mike dimario ihnp4!ihlpg!dimario
					312/979-5397