Maybe you know the order of the planets, and that’s it. How about some facts about each planet (and Pluto)?
First, an image of the planets (that I created) approximately as the human eye would see each one, and drawn so that planets are scaled correctly relative to each other. You can use some variation of it as a memory palace (maybe store the facts on each planet’s surface somehow).
I have a lot of info, so it would be best to show an image of the table I put together. Right-click “Open image in new tab” if you need it to be larger.
Let me know how you do.