There is really no way to know since you have to have one before you can weigh it.
The average UFO has no weight. The average UFO is a digital image or an image on film.
How much a UFO would weigh if they do indeed exist is not known.
they weigh a lot because of there diet
So many that the town of St. Paul, Alberta has built a UFO landing site.
You can get it of A website called simviation or fs freeware
lot of criticism.......from the general public, who are stuck in their belief systm
They dose weigh a lot
a LOT
a lot
a lot
It seems they do. Not just sightings but claims of abductions, too. Whether these are legitimate I don't know.
a lot