File:1911 Britannica - Astronomy - Orbit.png

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1911_Britannica_-_Astronomy_-_Orbit.png ‎(151 × 154 pixels, file size: 11 KB, MIME type: image/png)

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English: Celestial Mechanics. Position P, through which the planet passed at an assigned moment, with a given velocity, and in a given direction, represented by the arrowhead. Logically these data completely determine the orbit in which the planet shall move, because there is only one such orbit passing through P, a planet moving in which would have the given speed. It follows that the elements of the orbit admit of determination when the co-ordinates of the planet at an assigned moment and their derivatives as to time are given.
Illustration from 1911 Encyclopædia Britannica, article Astronomy.
Date
Source Encyclopædia Britannica Eleventh Edition, Vol. 2, Page 804
Author Encyclopædia Britannica, 1911

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Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

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current19:31, 17 November 2013Thumbnail for version as of 19:31, 17 November 2013151 × 154 (11 KB)Clarice Reis (talk | contribs)User created page with UploadWizard

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