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Image: Setebos discovery

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Setebos_discovery.gif ‎(302 × 302 pixels, file size: 179 KB, MIME type: image/gif, looped, 3 frames, 0.6 s)

Description: Animation of the discovery images of S/1999 U1 (Setebos). Each image in the loop sequence of 3 images is an 8 minute exposure (are shown is approximately 20 seconds of arc on a side, or 300 000 kilometers at the distance of Uranus).The images were taken about 2 hours apart. The satellite is moving down and to the left on this image, other "moving" targets are cosmic rays (noise) and do not move in a fashion consistent with a satellite of Uranus.
Title: Setebos discovery
Credit: https://www.cfa.harvard.edu/~mholman/u99.html https://www.cfa.harvard.edu/~mholman/an1.html
Author: Brett J. Gladman/Observatoire de la Cote d'Azur
Usage Terms: Creative Commons Attribution-Share Alike 2.0
License: CC BY-SA 2.0
License Link: https://creativecommons.org/licenses/by-sa/2.0
Attribution Required?: Yes

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