These two separate points, combined, tell me that you have either forgotten about or have never found a C43 Object Detector. That is a module with a description that says it quote, "Detects claimable asteroids and wreckages." However, despite the description, it almost never highlights or otherwise indicates wreckages. That is, the wreckages portion of the detector seems very broken. (See my post here in the "Target nearest wreck" topic for more.)
It only highlights wrecks that have 0 damage and can be refurbished to be ships you then own and add to your fleet.