I just noticed this today. Not sure if any pointed it out, reported it or noticed it themselves.
@Ian Doncaster,
@Jmanis,
@Xenia_K. Tagging all of you cause in 300+ pages I know you 3 are extremely active and would spread this information.
On landable planets/moons. The colonization view shoes the single planet having 5 available concurrent constructions, which I believe is an obvious visual bug, with 3 orbital and 2 planetary when focused/zoomed in on just the selected body. Now look at the bottom and see what happens to the available sites. Do note that it does has 3 orbital and 2 surface total sites for that moon. I already have structures on a 3\3 moon so cant confirm if it would say 6 available. One that has 2\2 states 4.
Going to state sites in x\x, indicating Orbital \ Surface, from now on for ease.
This is how the "System Economy Influence" is currently determined as
@Paul_Crowther has already stated and confirmed in other threads. I know it was also said that it is being researched how to link more markets together.
Now I've zoomed out to the entire system and it returns back to the system actual of 64\65 overall with no concurrent available.
This one is actually a 1\2 and a 1\2. I was hoping that it would have been counted as a 2\4 due to a moon orbiting a moon. But I now can confirm that the body is directly linked to orbital slots. Not just how you'd think, say like 'y' is orbiting 'x' and therefor 'y' should be added to 'x'.
That means these tidally locked two bodies are separate "systems" also. It will be a 2\2 and 3\2 respectively instead of a 5\4 that I once again was hopeful for. Again, you would think it was 'x' and 'y' are in binary orbit around a planet. Therefore they should be added together. Not the case.
I can not confirm this following theory with actual facts yet but only base it on supporting evidence. If you have a sun, or asteroid belt, with more than one orbital slot. So anything that starts with "SLOT 0" and has more than that one. It should be counted as a localized "system" for economy influence reasons. Example: An asteroid belt has a Slot 0 and Slot 1. If you build a station in Slot 0. Whatever you build in Slot 1 will influence the economy in Slot 0. Even though it does not have a planetary body, it should still follow the current localized "system" rules for colonization structures. Once anything, regardless of what it is, starts with "Slot 0". It creates a localized "System Economy" before and after it until the next body that has a "Slot 0"
Diagrams for visual references. Will use following image for example and continue using the Orbital \ Surface separating localized system economies with < x >:
Sun 2\0; Belt 1\0
Planet 1 0\0; Moon 1a 0\2
Planet 2 2\0; Moon 2a 1\2, Moon 2b 3\1
Planet 3 1\0; Moon 3a 0\1; Moon 3b 2\3
Planet 4 1\0; Moon 4a 2\0; Moon 4b 1\0
Planet 5 3\0; Moon 5a 0\2; Moon 5b 0\3; Moon 5c 0\2; Moon 5d A 1\2; Moon 5e 1\2; Moon 5f 2\2
Planet 6 1\0; Moon 6a 1\2; Moon 6b 1\2; Moon 6c 2\1; Moon 6d 1\1; Moon 6e 1\1; Moon 6f 1\1
I hope this clarifies some confusion some people may have.