UFO appears in chemtrail over Vancouver, BC.

Watching the clear blue sky Sunday morning, when I noticed a high altitude chemtrail being laid from south to north across the sky, about midway across the sky, which basically put this jet almost overhead, but still slightly to the west, appears right out of nowhere virtually almost in the chemtrail, itself a brilliant bright circle of an object,  Imagine venus only In the daytime sky, that would accurately describe the size of this object,  I'm guessing at an altitude of 30,000 plus feet.  This object pulled a straight line from west to east directly overhead of me and took approx 30 min to cover the horizon from west to east,  It never wavered.  It never changed brightness.  It just eventually from what I could tell slowly gained elevation to the point where you could no longer see it In the sky.  
I have been sky watching for 40 plus years and NEVER have I seen anything like this, It was fascinating Indeed!
Possibly a multi-colored kite, we suspect.  PD