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C/2019 (ATLAS)


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About this observation
Nick James
Time of observation
08/04/2020 - 20:16
C/2019 (ATLAS)
Observing location
Chelmsford, UK
C11 Edge HD + FLI6303

Here is my processed image of C/2019 Y4 (ATLAS) from last night. The sky was very bright and observations were cut short by cloud. Seeing was very good with an FWHM of 2".4 and my pixel resolution is 1".3. The brightest part of the elongated inner coma is around 5 pixels downtail from the predicted position of the nucleus based on an orbit solution using data to March 25. That is consistent with the large RA residual I get with astrometry. 1 pixel represents a physical distance of 940 km on the sky plane at the comet.

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