Greetings,   If you were a member of AMSAT-NA you would receive the AMSAT Journal and could have read the article I wrote for the last issue concerning the predicted lifetime of ARRISat-1. The paper presented predictions for up to a maximum release height of 370-km and there is enough information to extrapole to the higher release height as realized. The recent reboosts put the release height somewhat higher but I would guess a lifetime of about one year.  The actual Sun-state influences the atmospheric densities of the future that ARRISat-1 passes through will control the actual lifetime. Even tho I am all packed up to move to my retirement home I will write a short update to that paper using the actual release height and submit it to the Journal.  I would encourage everyone (if you aren't a member already) to join AMSAT-NA and read the journal there is a lot of good stuff there.   Jim, N8OQ