I caught a persistent meteor train while shooting a timelapse near Sedona, Arizona on 9/23/2025. I shot full frame, 16mm at f/2.8 in 15 second exposures twice a minute. So you're seeing the result of about 1 1/2 hours.
Starlink? Extra words because I don’t want my comment to be too short.
sithelephant on
5000sish in 3s, so the 1s or so the expansion takes is order of 1500s.
Guessing that it’s 60 degrees, 1 radian or so wide, and assuming a breakup height of 60km, that would make the width at 1500s order 20km, or the debris diffusing at 15m/s or so. I assume it’s sunlit.
rocketwikkit on
For clarity, he’s talking about the flash at the bottom that turns into a wisp of smoke, not the airplane trails.
3 Comments
Starlink? Extra words because I don’t want my comment to be too short.
5000sish in 3s, so the 1s or so the expansion takes is order of 1500s.
Guessing that it’s 60 degrees, 1 radian or so wide, and assuming a breakup height of 60km, that would make the width at 1500s order 20km, or the debris diffusing at 15m/s or so. I assume it’s sunlit.
For clarity, he’s talking about the flash at the bottom that turns into a wisp of smoke, not the airplane trails.