Interesting object

https://www.legacysurvey.org//viewer/?ra=178.3295&dec=1.2077&layer=hsc-dr3&zoom=16


ony two on HSC DR2

My guess would be asteroid – HSC doesn’t really filter them out the same way we do in the Legacy Surveys, so you do get a fair number of them. But usually I would expect to see an asteroid moving faster than this between exposures!

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spotted something very similar nearby, with one release showing three dots & the other release showing four