Comet C/2025 K1 (Atlas) Video from December 7, 2025

Comet K1 was only discovered in May of 2025 with closest approach to Earth on November 25. The tidal forces from the closest approach to the Sun on October 8 led to instability in the comet and an eventual fragmentation. This fragmentation was documented on November 11, 2025. On the night of December 7, in between deep sky imaging sessions, I decided to capture 2 hours of video of the comet. In the video you can see brighter fragments trailing the head of the coma. The comet moved rapidly in the sky across the stars of Cassiopeia. Please take a moment to view the comet K1 video, my 3rd comet in as many months at Starfrtont Observatories.