Is there a way to measure distance between two objects?

[14thLord]

I basically want to see how far 2 planets are away from one and another during certain periods of the orbit, such as the closet they get or the furthest they get from one and another. Is there a way to do this? A measuring tool?

[SAT0rii]

there's a view field measurement in the bottom left of your screen,put the edges of the game camera between both planets,it's not accurate but it's the only way of doing it.