C/2021 C4 ATLAS
- C/2021 C4 ATLAS 2021 April 18 07:21 UT, 6x300s, m=17.5, tail 60" PA 151 degrees, 13" coma, 11" SCT f/6.4, STF-8300M,
Mike Olason, Tucson Arizona
- C/2021 C4 ATLAS 2021 April 08 07:14 UT, 8x300s, 11" SCT f/6.4, STF-8300M,
Mike Olason, Tucson Arizona
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