Engineering materials are lying around. Re-instance to refresh the material drop. Sometimes 1 or 2 rare items are dropped like Chemical Manipulators and Chemical Storage Units.
There is also a single data point that can be scanned.
An abandoned planetary mining settlement in the Hyades Sector DR-V c2-23 system (), on planetary object 'A 5'. Engineering materials spawn here. The settlement is located around the following bearing 44.818, -31.389. Here is a video on gathering materials. Here is a list of materials and the span points on a map of Dav's Hope by Dognoosh.