Observation by Nick James: C/2019 Y4 (ATLAS) continues to change

Uploaded by

Nick James

Observer

Nick James

Observed

2020 May 11 - 21:00

Uploaded

2020 May 12 - 06:11

Objects

C/2019 Y4 (ATLAS)

Equipment

C11 Edge HD + FLI6303

Exposure

30x60s

Location

Chelmsford, UK

Target name

C/2019 Y4 (ATLAS)

Title

C/2019 Y4 (ATLAS) continues to change

About this image

Images tonight showsthat the central coma region of this comet continues to brighten, up from 13.9 in an 11 arcsec radius aperture on May 9.9 to 13.5 tonight. Also the bright inner coma has become significantly extended in the tailwards direction and this is affecting astrometric residuals. The inset was obtained with short (20s) exposures in 1x1 binning. The main image is 2x2 binning. It shows the extended inner coma, the forward bar of material which has been visible since around May 1 and two tails, the broad, diffuse one in PA 45 deg and the short, narrow one in PA 30 deg.

Files associated with this observation

2019y4_20200511_2200_ndj.jpg (860.4 kB)

Like this image

David Basey, Pauline Phillips, Ray Emery, David Strange, Eric Watkins, Jeremy Shears, Steve Knight, Grant Privett, Nick Hewitt, Mark Phillips, Andy Wilson, Ron Johnson, Andrew Dumbleton, Peter Carson

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