Re: WANTED: Astronomy data for a fantasy world
I'm going to second Tom and BDA here. It's more important for the details to serve the story then vice versa. Unless you're writing super hard sci-fi, no one is going to get mad at you because your math doesn't check out. Don't feel beholden to my math and speculation if it's getting in the way of your story. I was going to type more here, but I realized I was just repeating what Tom said in different words, so just go read his post again.
And avoid info dumps at all costs. Those are when a writer has a notebook full of research, and just HAS to show it to his readers. They just stop the story cold, and are the things readers flip past on a second reading.
(I'm the type of writer who will spend hours researching something online, then give a one sentence description in the story. I know what it is and how it works, which is the important thing. The rest will come up if/when the story needs it.)
http://www.asstr.org/~Invid_Fan/