We were watching the northern lights when these unidentified lights (top left) moved across the sky from west to east. The main object seemed to have 2 arcs of light out in front of it and on later examination of the image there are more faint streaks of light moving parallel. The 15 second exposure has blurred the 2 arcs into wider lines. The lights took about 5 to 10 minutes to pass across the sky. I later spoke to someone else who viewed the same about 25 miles away. Does anyone have any idea what this was?

Nikon D750 14-24mm

Perspective adjustment, lightening shadow, reduce highlight on artifical light from huts