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ShortQuests -- individual adventure modules! An all-new collection of digest-sized D&D adventures designed to plug in to your game.

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Message: <blockquote data-quote="Imret" data-source="post: 1922848" data-attributes="member: 991">I think this math is tricky because it's unprecedented - we have no basis (as far as we're aware) on which to base a life-friendly moon orbiting a planet. But, having started this conversation with a couple of people, I have a few thoughts to work on for it. Incidentally, this is a very cool idea.Days, months, years, those are all your call pretty much. You get to set rotational and revolutionary speed - if you want the moon to skim the planet's atmosphere once every hundred-odd years, that's your perogative. If it's forever winter, your call.Huh. Sudden off-topic thought - might this explain the bizarre seasons of Westeros? It's actually a moon?As far as planet size, that depends on the size of moon you want. Luna is actually a little large to be a moon orbiting a planet of our size, as a solar-system average. If it's orbiting something the size of say, Mars, the moon is fairly small, whereas Earth could rather easily orbit a gas giant..provided sufficient distance exists.Tides would depend on if your orbit is circular or elliptical. A circular orbit would give very minimal tides, likely tied to the sunlight cycles (as one side of the planet is exposed to light, it turns away from the planet, and vice versa). An elliptical orbit would give far slower tides, possibly closer to seasonal, but they'd be fairly dramatic as the moon pulls closer to the planet and then farther away.If I'm wrong on either of these, science-folk, do tell me. I know very little about planetary physics, but my logic is usually pretty good.And a final thought...a gas giant would be the coolest moon in any night sky.</blockquote>

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