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Ragitsu, August 7, 2010 in Non-Gaming Discussion
Metahumans Rising is a Table Top #RPG, of #superhero tales. It is currently available on DriveThruRPG.
Hm. Hadn't thought about it in this way before, but with stars anything like the Sun, if you want a 4-year planet orbit around it, that planet's gonna be about 3 AU out.
That far out, you can warm your planet up some by going to higher mass stars. The luminosity ratio tells you the ratio of the two stars' masses. But if you go up to A having 1.25 the mass of the Sun (which makes B have a mass of 0.84 solar masses) then the total starlight falling on planet surface is 30% of Earth rather than 14% of Earth. Going to star A being less massive than the Sun makes for colder planet (less stellar radiation).
BTW, another "feature" is that there's a maximum separation of the stars as seen from the planet, and that's about 15 degrees. Our Sun's angular diameter is about half a degree. At 3 AU out, reduce that to 1/6 degree.
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