A bright fireball was seen over the Netherlands and Belgium on 21 September at 19:00 GMT.
In addition to many individual sightings, it was also recorded by an all-sky camera dedicated to such events. The camera is part of the Fireball Recovery and InterPlanetary Observation Network (https://www.fripon.org), and is hosted at ESA’s technical centre in Noordwijk, the Netherlands.
Other network cameras in Lille and Brussels also recorded the fireball, allowing the object’s trajectory to be reconstructed. It is most likely that any resulting fragments – meteorites – will have fallen into the North Sea.
Fireball sightings such as this can be reported to the International Meteor Organisation (http://www.imo.net) or to the American Meteor Society (http://www.amsmeteors.org). Reports for this particular fireball can be seen via https://www.amsmeteors.org/members/imo_view/event/2017/3301.