Thanks Dennis! I had forgotten about the Heavens Above website. As you say, a geosynchronous satellite being lit by the setting sun does seem to be a best fit. But I couldn't find any sats at Heavens Above that exactly matched what I saw. However, the Cosmos 1143 Rocket did pass through very close to the position I estimated. But it's listed appearance was an hour later that what I saw, it's magnitude wasn't as near as bright, and the charts show that it was moving fairly fast (about 5 minutes from horizon to horizon).
Oh, well,... [sigh]
