This one was detected by satellite, but scientists have been using acoustic detection of meteorite explosions for some time. Fittingly, they used detectors made for nuclear explosions, the Comprehensive Test Ban Treaty Organization's infrasound network [1].

I learned this from reading this highly recommended book on the subject: Asteroids: Relics of Ancient Time by Michael K. Shepard [2] (amazon link)

[1] https://www.norsar.no/r-d/safe-society/nuclear-test-ban-moni...

[2] https://www.amazon.com/reader/110706144X?_encoding=UTF8&quer...