Image:Apparent retrograde motion.gif
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Apparent_retrograde_motion.gif (512 × 256 pixels, file size: 82 KB, MIME type: image/gif)
Description:
Illustration of the apparent retrograde motion of Mars. The apparent retrograde motion is an artifact of mapping the motions of the objects of the solar system in a coordinate system that is itself in accelerated motion.
The yellow dot can be thought of as representing the Sun, the blue dot can be thought of as representing Earth, and the red dot can be thought of as representing Mars.
In order to make the animation cycle smoothly, the blue dot completes two orbits for every complete orbit of the red dot. In the case of the actual planets, the ratio of orbit times is not 1:2.
Created:
First version: 14 January 2006
Second version: 23 February 2007
Source: Created from scratch an animation that closely follows the design of this Physlet animation by Wolfgang Christian
Uploaded by: Cleonis
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This work is licensed under the Creative Commons Attribution-ShareAlike 2.5 License. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 22:58, 23 February 2007 | 512×256 (82 KB) | Cleonis (Talk | contribs) | (New version of the animation. Not an alteration of the existing one, but started anew) |
| 11:33, 14 January 2006 | 410×260 (136 KB) | Cleonis (Talk | contribs) | ('''Description:'''<BR> Illustration of the apparent retrograde motion of Mars. The apparent retrograde motion is an artifact of mapping the motions of the objects of the solar system in a coordinate system that is itself in accelerated motion. '''Create) |
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