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GregroxMun

Tatooine comment

Apr 17th, 2018
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  1. You seem to show the suns as static or rotating very slowly, however the suns would orbit each other on the scale of days or weeks, not months, and so the angular distance between the suns would change throughout the week or even day, not necessarily throughout the year.
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  3. I'm assuming Tatoo 1 and 2 are both G-dwarfs identical to the sun, since the iconic shot was filmed with the real sun (also assuming that the red sun is only red because its setting, not because it is an orange K or M dwarf. (backed up by the color of the suns being more consistent elsewhere)
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  5. Jabba the Hutt's palace image depicts the suns as far apart as they get as far as I can tell. Each sun has to be 1/4 degree or so for Tatooine to be in the habitable zone (our sun is 0.5 degrees and there's two suns). The palace image shows the centers of the two suns to be 1.5 degrees apart.
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  7. I'll put Tatooine at 2 AU, there it should get as much light and heat as Earth does, playing around with greenhouse effects and water percent can make this happily deserted if you like, but I won't move it from 2 AU. (Since it also has 2 solar masses to orbit around, Tatooine's year is 1 Earth year long).
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  9. tan(1.5 degrees / 2) = a/2 AU will solve for us how many AU away the suns are from their orbital barycenter. We get 0.0131 AU. They are 0.0262 AU apart from each other. They orbit each other in about 26 hours. So conceivably the sun could rise as a single disk, climb to the sky and become far apart, and then come back together just in time for sunset. That day would happen twice a year for a given longitude on the surface. Ninety degrees ahead in the orbit, two suns rise, combine at noon, and then separate again for a double sunset.
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  11. So it becomes even more interesting, with day-to-day differences in the appearance of the suns.
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  13. Tatooine would not be stable if it orbited out of the plane of the rotation of the suns so alas the fun inclined scenario can't happen.
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  15. I'm not a Star Wars fan, but I did enjoy this video in particular and the Tatooine system in general.
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  17. EDIT: Just realized, the hab zone orbit of Tatooine should be 1.41 (2^0.5) AU, not 2. This doesn't significantly alter the points I make, because the orbits of the stars are of more importance, but I just wanted to make that correction.
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