Hi Rick, I'm still experimenting with the (now registered version) of Brent Boshart's "Satellite Tracker" ($26 US) (He's in Canada). I have an account with "Space-Tracker" so I could have access to all their TLE catalogs (Registration is free but take a couple of days while they run a back ground check on you). Tonight's pass is a little tight as I like to track a bird or two before the main event because as you pointed out, you want the latest timings as things drift a bit. By adjusting the timing (usually ahead by a second or two) on a couple of "test" satellites, I have found most all subsequent "tracks" fairly on the money. I will be doing a visual observation so no pictures only a description of what I might see... If you want to play with Brent's software you can download it for free with 20 "evaluation" uses... (www.heavenscape.com) Jimmy Ray -----Original Message----- From: az-observing-bounce@xxxxxxxxxxxxx [mailto:az-observing-bounce@xxxxxxxxxxxxx]On Behalf Of Rick Tejera Sent: Friday, July 07, 2006 9:34 PM To: az-observing@xxxxxxxxxxxxx Subject: [AZ-Observing] Re: ISS/STS-121 pass over Phoenix tonight just before 9pm Jimmy, You can get the most current orbital elements from Heavens-Above. They update every three hours, I believe. Click on the link to the pass and from the visibility details page, click the "orbit' Link near the top right. This will display a plot of the orbit and will have the two line keplarian elements below the maps. Also has the elements in a tabular for as well. You should be able to copy & paste the TLE into whatever software you're using. Do it around 1900 tomorrow and you'll have the most accurate elements. I look forward to seeing your results Rick Tejera President Editor SACnews Saguaro Astronomy Club Phoenix, Arizona saguaroastro@xxxxxxx www.saguaroastro.org > -- -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.9.9/382 - Release Date: 7/4/2006 -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.