> From: "Virgil" <VFenn1@excite.com> > To: <Seesat-L@blackadder.lmsal.com> > Subject: Re: URL correction in Artificial satellite in Jupiter movie > Date: Sun, 12 Nov 2000 08:21:42 -0700 > > Joost Brinkkemper told me that the time of transit was more or less > than > > 6h30m on November 4. Probably this is local time(UTC+1h) but I'm > not sure. > > Tristan, I think you are right on the time. I was off by an hour. > But the direction of travel looks S>>N to me. > I have measured the absolute and relative distances of the Jovian moons using Guide 7.0: 2000 Nov 04 05:00 UTC Ganymede-Europa 1.772' (arc minutes) Ganymede-Io 5.124' (G-E)/(G-I)=1.772/5.124=0.346 2000 Nov 04 06:00 UTC Ganymede-Europa 1.330' (arc minutes) Ganymede-Io 4.844' (G-E)/(G-I)=1.330/4.844=0.275 On two frames I measured (G-E)/(G-I)=0.262 and 0.269 Using 0.2655 (+ or - 0.0035) the time of transit is (0.275-0.2655)/(0.346-0.275)*60 minutes after 06:00 UTC or 06:08 UTC (+ or - 3 minutes) Cosmos 1844 (87-41A/17973) was close to Jupiter at 06:06:50 UTC and moving with the right speed and in the right direction as seen from Alphen. Rainer ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
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