GW170608 was a gravitational wave event that was recorded on 8 June 2017 at 02:01:16.49 UTC by Advanced LIGO.

About one solar mass was converted to energy in the form of gravitational waves.

The signal was initially identified by visual inspection of triggers from the Livingston detector.

Manual follow-up with the Hanford data revealed a coincident signal.

[5] This was the first gravitational wave detection where the scientific article announcing the discovery was posted on the electronic preprint arXiv server before the paper was accepted for publication by the journal.