Foreground star position
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Likely an artifact just like the 'bloated' image of all nearby foreground stars, but in comparison to all the other objects around it seems to have moved quite a bit in between SDSS and DECaLS imaging(at least the 'center' of the image).
Take for example the difference in position on the X-axis in comparison to the two lower objects in the cutouts below
Also in the GAIA DR1 catalogue, but i don't know how to access / search that one yet. Might contain information on its apparent velocity;
http://legacysurvey.org/viewer?ra=147.2431&dec=2.4635&zoom=16&layer=sdssco
Try this link to flip between SDSS and DECaLS images.
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by
Budgieye
moderator
Here is a star that really zips along, but of course it is a nearby star.
Talk: Wolfe 359 - see the proper motion of a star in 10 years by Budgieye https://talk.galaxyzoo.org/#/boards/BGZ0000006/discussions/DGZ0001yxz?page=1&comment_id=572f33bbf96efa53d20000a4 See a star move! Compare between the DECaLS and the SDSS image
Forum: How long before we can measure these stars moving? by Mukund Vedapudi http://www.galaxyzooforum.org/index.php?topic=276167.msg371776#msg371776
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Yes i remember seeing that before very nice!
Then you probably also like this one, Barnard's Star animation spanning 10 years, posted on CosmoQuest forum.
To forum post: https://forum.cosmoquest.org/showthread.php?161924-Annual-Barnard-s-Star-Animation-now-spanning-10-years
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