Useful links for worldbuilders

[Drashner1]

I've never heard of this, but this also isn't within my area of interest/expertise. Someone else might know more on it.

Regarding the disagreement between the website numbers and Stellarium - without knowing how the creator of the site derived his numbers it's hard to speculate what the cause of the discrepancy might be. It could be different assumptions in the calculations, a basic error on his part, or he could have simply pulled some or all of the numbers out of the air.

Todd