Name your planets based on characteristics, like "Desert" or "Ice" and add a number according to what number it falls into as you save it, as in, if you have 57 Desert planets, save the new one as 58, and you won't ever have trouble finding a particular planet. If you're saving stars, do the same thing except using stellar classification (M6V 26, etc.) and with other stuff...well, just basically put stuff into categories and then rename them when you use them. And how would you even save into a particular category? How would you code such a thing? And why would you even need to if you can save in categories like I said?