Out There: The Solar System For Tourists by Herb Lester Associates
But that's only half the story. There's also the design, with those vintage-style illustrations being the work of Paul Rogers. Good work there. The guide is A3 (297x420mm) folded to A6 (105x148mm) and litho-printed in England on 100% recycled paper.
It's available for a bargain £4 from Herb Lester Associates. Also, if you want some mood music to listen to while you browse your map, you can download an accompanying 12-track album of vintage space-inspired grooves from Trunk Records for just 50p. Both for under a fiver, you can't argue with that.