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originally posted in: Destiny's Mars and Phobos
5/13/2015 11:15:40 AM
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Nicely done! You did a great job in presenting the info!
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  • Thanks a lot! I was pretty nervous about it! Haha.

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  • Haha, I bet. It didn't come through at all. It was just the right blend of science and humor, which is near impossible to pull off. One question - as Phobos seems to be in geosynchronous orbit (regardless of rotation), should time be rotation of Mars? Assuming that it has not been altered by the Cabal, it would be 24 hours, 39 minutes and 35 seconds (88,775 seconds). Another interesting calculation would be to measure via 'parallax', or triangulation. Again, assumptions would need to be made between the heights of buildings (and distance to them), but at least Phobos is a known. [url]http://eaae-astronomy.org/WG3-SS/WorkShops/Triangulation.html[/url] I would love to work through some of these calculations for you, but I am down 2 managers at work this week, and upper management are expecting me to actually get some stuff done. ;-)

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  • You were completely right about the Geosynchronous thing. To be honest, I didn't fully understand it at the time. Lol. I'm making a part 2, and I use the Geosynchronous observation to make another calculation. Is it ok to mention your name in the video? I'd like to give credit where it's due. And sorry for not understanding the geosynchronous thing in the first place. Haha.

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  • No worries. I was a bit confused by it as well. Mention away. It's still a fascinating thought (and I love when astrophysics makes its way into video games).

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  • Well, thanks a lot, man! Well, it's a bit more complicated than that. Geosynchronous orbit has to do with Sidereal days as opposed to Solar Days. Natural Satellites, like Phobos, are tidally locked, so the same face always points towards the orbited body, but they don't have geosynchronous orbit, so they appear at different points of the sky every day. My initial foray into calculating distance wanted me to use triangulation, but it was way more difficult to use as opposed to Kepler's Third Law. We can also try using the height of Guardians. The height can be assumed as being the average for Human Males or Females, and we can use a third person to approximate the distance between the Two guardians. Haha. No problem, man! I know the feeling!

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