Below is the information we have on event 584728 (JSON):

id
584728
mag
4.8
time
2018-12-07 09:44:18 UTC
url
https://earthquake.usgs.gov/earthquakes/eventpage/us1000i425
source
earthquake.usgs.gov
latitude
-29.0075
longitude
-70.3857
depth
89.9
retrieved
2018-12-07 10:09:37 UTC