An object moved fast downwards and left the screen then reappeared 9 seconds later moving upwards; basically, a rod with features

A 'rod with features' moved down the far left edge of the screen of an infrared camera facing upwards. The object went out of screen and, what is likely the same object, reentered the screen moving upwards 9 seconds later. By the time it was near exiting the screen top, the features began to look a little different. Perhaps it was spinning, so the perspective changed. The "rod" reminds me of the US Navy's well-known Gimbal video which has a central rod along with features that make it look like a gyroscope.