It's a tree.
We were quite a distance from the object as I originally stated hence the size of the objects around it and why I said it was over 30 foot in height as thats about the size of the trees. As I also said, I wish had brought my other camera then I could have zoomed in on the sphere. But all the 'coulds' and 'shoulds' wont alter the past, sorry anonymous. I wasnt expecting to see anything that required that camera.
One of the cars can be made out behind the sphere to the left, but I'm having trouble making out the people even on high resolution