A little comet observing remotely via Chile today, this is C/2021 T4 Lemmon , a long period comet discovered by the Mount Lemmon Observatory 7 October 2021. Current distances from Earth approx 102, 267, 319 km, it is now moving away after its close approach to us. This is a stack of 5 images 120 seconds long, using R band, unfortunately the data is not good enough for reduction, however I estimate the mag as 9-10 |
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