Large Orb in NE Montana up close...Went outside to dump trash in can by the road and heard the dogs starting to bark. I threw the trash in the can and turned to head back when I saw several dogs all looking in the same direction barking. I looked up and grabbed my camera out of my jacket immediately to snap this photo. I maxed out the zoom and got this just before it headed away rapidly. I estimated the center mass at 10-15 feet in diameter. The object was approximately 500 yards south and 500 feet off the ground. No wind. Very cold temps. Moving at 5-10 mph at first then very rapidly accelerating until gone from sight. Yellow or orange in color. No sound from object over dogs barking.