Sadly these were all fragments of comet C/2019 Y4 as it broke up in March-April and all of these larger pieces have since disintegrated. The comet when last seen was just a faint, pale 'ghost' with no discernible nucleus. Will be interesting to see if discernible traces can be located now in southern morning skies but with a big Moon around this will be extremely difficult.
Cheers -
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