It is probably some new satellite recently put up into orbit. Remember the shuttle Atlantis was launched recently and did have some satillite payloads
to take up there.
Also some of the already placed birds can be moved from point to point, such as survellance satellites.
Some of them are parked in such a way that they are always seeing sunlight, and as they spin, reflections of sunlight off of their solar pannels will
produce "prisim" like effects, twinkling and such.
Let us know tho if this twinkling object gets bigger and becomes more sphere like as the days and weeks go by.
Cheers!!!!



