Object flies into a ring after creating it

Object flies into a ring after creating it
I will delete this if it is debunked/easily answered but I was walking my dog and saw an oddly bright light and filmed it. I didn’t notice the ring it made while I was filming it and I stopped the video shorter than I should have but the light eventually flies what looks like into the ring and then was gone. There are other planes you can see when zoomed out with red/green lights blinking. This had no visible blinking lights from my vantage point. 

Time: 8pm ish

Location: over Boston north shore