This thing was 10 times the size of a planet and every half hour almost exactly it would fade to black and come back brighter

I have 2 videos and one shows a plane flying across to give you scale. I watched this for 3 hours and every 30 minutes it would fade to black and come back even brighter. It did not move from that spot for the entirety. My camera did not pick up any stars telling me that it was close to Earth. Also when viewing it with the naked eye it had shards of light coming off of it not like the halo of light we see around celestial bodies because they are too far away. This thing was so close I could clearly see the rays of light that you would expect from viewing a light that is close to you. PLEAS NOT: the video files I have are too long to submit here. PLEASE email me so I can forward a link to view these on Google drive. I have to know what it was that I saw. What familiar time in the sky stays in the same spot for 3 hours, dims every half hour and has never been seen again. I viewed this from my art studio where I spend every single day and this has never ever been there before.