Image: Thyone-prediscovery-CFHT-annotated

Description: Animation of three images of Jupiter's irregular moon Thyone (S/2001 J 2), taken by David Jewitt and Scott Sheppard using the 3.6-meter Canada-France-Hawaii Telescope (CFHT) on 10 December 2001. These images were taken before its discovery on 11 December 2001. Each image was taken approximately 40 minutes apart, showing the moon's motion relative to the background stars and galaxies. The dark round spots are image artifacts. The apparent magnitude of Thyone is 22.5. The raw image datasets used are 615208p, 615216p, and 615223p. For comparison, the star field in these images can be viewed at the CDS's Aladin star atlas.
Title: Thyone-prediscovery-CFHT-annotated
Credit: Raw images provided by the Canadian Astronomy Data Centre's Solar System Object Image Search.
Author: David Jewitt/Scott Sheppard/Canadian Astronomy Data Centre
Permission: "We however encourage the use of our material as long as we are first consulted and informed of its use and our copyright is acknowledged in a legible manner." https://www.cfht.hawaii.edu/hawaiianstarlight/CFHT_WWW_Copyright.html
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes