I am most pleased to figure out that in an upcoming conversation in TIWTBTWO, when a physicist is having a grumble about the fact that unless he comes up with a cool name for the major plot-driving anomalous thing he has discovered, it will be named after him, and all the cool names from mythology and Shakespeare and so on are already taken, my protagonist will, in enthusing about that society as a whole honouring whatever discoverers first call things, get to mention the example of a terrestrial planet found in the (very narrow) habitable zone around a red dwarf star that's part of a double system with a much larger star, which has formally been named Surprise. Because it works at the level that such a planet would be a surprise, and since my story doesn't actually go there, at least in this book or any of the ones I have subsequently plotted out, I can totally reserve the option of when, if at all, to mention that its larger moon is called Jack and the smaller Stephen. (Two sizable moons and being close in to its sun make for really quite complicated tides; it would be one heck of a place to go sailing.)
It's a cute literary reference if the reader gets it. It's a plausible literary reference for the sort of person who becomes a starship captain to think is cool, so it works in-universe. And if the reader does not recognise the allusion, it works as the kind of names that people might randomly give moons if they were stuck for inspiration so it's totally transparent rather than obtrusive in a Here Is A Reference You Are Not Getting sort of way.
