Author Topic: Retrograde and prograde motion  (Read 10397 times)

Fu-Kwun Hwang

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Retrograde and prograde motion
« on: September 03, 2016, 10:58:53 am »
Quote from Wiki https://en.wikipedia.org/wiki/Retrograde_and_prograde_motion
In the Solar System, all of the planets and most of the other objects that orbit the Sun, with the exception of many comets, do so in the "prograde" direction, i.e. the same sense as the rotation of the Sun. Also the rotations of most planets are prograde, with the exceptions of Venus and Uranus, which have retrograde rotations.

The following simulation let you play with it.

The green dot is draggable. You can use slider bar to change the observer star (green dot).
All the velocity(arrow) are draggable,too!

The right side view shows the relative motion (related to the observer star).

Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
  • Please feel free to post your ideas about how to use the simulation for better teaching and learning.
  • Post questions to be asked to help students to think, to explore.
  • Upload worksheets as attached files to share with more users.
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