Endri has hinted at physical locations that are not the gates.
I would also suspect that the locations are all earth based and possibly when lines are drawn all over the place, converge on one spot. So getting co-ordinates/accurate pointers for the precise locations is probably an idea. Make their pins another colour or something. Have vagues another and guesses another.
The planets were named for the gods, remember, not the other way around. 'Hey! A giant thing in the sky!' exclaims some Roman/Greek dude. 'It is an omen of our god. It is the star of Jupiter!'
The Greek gods were well into their mingling around with mortals.