asteroid tracked over 4 places
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by stonepenny
http://www.asteroidzoo.org/?utm_source=Zooniverse Home&utm_medium=Web&utm_campaign=Homepage Catalogue#/classify
bottom left, going up and slightly rightPosted
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by scibuff
Sorry that's a wrong link ...
Posted
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by stonepenny
marked as artefact, but white not black - bottom right corner http://www.asteroidzoo.org/?utm_source=Zooniverse Home&utm_medium=Web&utm_campaign=Homepage Catalogue#/classify
Posted