I'll give you the benefit of the doubt here, you saw a UFO, no-one (unless someone here is a member of NASA or any 'secret' space organisation) here will know what it is. But it does sound like something coming into the upper atmosphere and burning up, a meteorite or debris.
Thing is though it had been totaly stationary for about 30 seconds or so as I was watching a plane flying past. Then I noticed one of the 'stars' start moving! Surely if it was a metreorite it would have been constantly moving, they aren't totaly still then start moving all of a sudden?