Here's the @UCSUSA 's new release of its active satellite database with 2666 satellites reported to be active. My own internal list has 2781 - we have various definitional differences and we make different guesses for uncertain ones. I'd say 10% uncertainty on the total
— Jonathan McDowell (@planet4589) May 21, 2020
via Twitter https://twitter.com/planet4589
May 21, 2020 at 11:00AM
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