Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84 exptools; site ihlpg.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!ihnp4!ihlpg!dimario 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 Lines: 11 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