Recent content by Beduino

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    I How to define the rotation of a planet in retograde orbit?

    See it depends on several things, is Earth your reference frame? How do you define the north pole of a planet? so on... Also this notion of prograde or retrograde around itself gets really confusing if the planet axis inclination goes to 90 degrees compared with everything else, but again...
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    I How to define the rotation of a planet in retograde orbit?

    So yes that is retrograde.
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    I How to define the rotation of a planet in retograde orbit?

    Actually let's compare with the Earth, from above north pole it rotates counter clock wise around itself and around the sun. So the retrograde is the opposite of both.
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    I How to define the rotation of a planet in retograde orbit?

    Actually this is a bit tricky question because it depends on the observer, if you are above the "north" pole looking below, or below the south pole looking above, but I suppose it would the reverse or negative of whatever you consider prograde rotation.
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    B How far from the core is the photosphere/chromosphere?

    http://www.nasa.gov/mission_pages/iris/multimedia/layerzoo.html'][/PLAIN] taken from Here It's in miles, but it's NASA stuff. Cheers :) http://www.nasa.gov/mission_pages/iris/multimedia/layerzoo.html'][/PLAIN]
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    Implicit Runge–Kutta in R^3 space

    I'm trying to solve a implicit runge kutta algorithm numerically in ℝ3 space as a integrator for orbital simulation. http://en.wikipedia.org/wiki/Runge%E2%80%93Kutta_methods#Implicit_Runge.E2.80.93Kutta_methods More specifically a 6th order Gauss–Legendre method...
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