Ahhh classic:
http://www.webelements.com/webelemen...t/Uup/key.html
Decay series depends upon the Isotope of the element involved however basic chemistry info shows the isotopes involved:
288Uup and 287Uup
However as the article states..only a few atoms of the element have ever been made and as said before they are only stable for milli seconds.
I luv a classic conspiracy story and this ain't one!