What about locations on planet? FSS does show number of locations on planet when you scan it but I didn't saw any data in log. Could you poke FDev about it?
And maybe create another EDD appreciation thread? All these "+1, this is great tool" posts will make this thread convoluted and messy.
On a related note, whenever you use the composition scanner to scan stuff on the planet you get a reward, 50k if it's the first find in that region, 2,500 if it's an already discovered object, are these logged? It would be interesting to know, that way you could keep track of what bodies have what features to make it easier to map out regions that have, say, Brain Trees. You would just need to scan one per body and if that data is logged you can produce a map of every known body that has Brain Trees, just the biology tag in the FSS may not be enough to differentiate between life form types.