Doing the Adrift Expedition Redux (even though I've already done Adrift, I just like doing Expedition), and ran into this at Rendezvous 4, a derelict freighter pretty much crashing into the planet. It apparently tilts gravity, and severely hampers your jump jets. TIL I guess.
I also did the freighter task for free, saving the scanner, so thank to whoever parked a derelict freighter right on top of the rendezvous. Saw lots of other people going into the freighter at the same time, so I think it helped out.
Protip: throw the active scanner in your personal refiner before leaving pulse drive, and leave it there until you're done with the derelict freighter. Boom, recycled scanner :D
Good to do if you’re really grinding them. Also, you can get free ones from the one guy on the anomaly pretty frequently if you ever need one.