If that's the case it may as well not exist. Even if you happened to get the right moon (with nothing obvious to distinguish it) the chances of dropping out at the right place would be basically zero.I'm starting to lean towards the idea that the station won't appear in the nav panel at all, and will probably require dropping (blindly) out of supercruise close enough to find it. If that's the case then a crucial aspect to finding the station will involve comparing the Codex image to screenshots taken at the target locations and then searching the systems that match with a fine tooth comb.
I think the only relevant parameter there is the apparent size of the moon in the screenshot - assuming a circular orbit, of course... I don't recall ever seeing a station in a non-circular orbit, but on the other hand I don't see any intrinsic reason they couldn't be, which would make it more complex. Stations can be in pretty varied orbits even around the same body.Another important aspect that probably will need to be worked out is calculating the distance an Orbis station would orbit a particular moon based off the mass of the moon (and other relevant factors). That could both narrow the search even further, as that would allow us to discard some of the systems where the ratio of the moon against the star's backdrop won't match the Codex screenshot and will greatly reduce the search area for the eventual blind supercruise drop search.