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Observation by Alan Snook: Comet ASASSN1

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Alan Snook

Observer

Alan Snook

Observed

2017 Oct 22 - 21:45

Uploaded

2017 Oct 23 - 20:59

Equipment
  • 0.5m f4.1 Dobsonian
  • 17mm & 8mm Ethos eyepieces x120 & x260
Location

Kent

Target name

Comet ASASSN1

Title

Comet ASASSN1

About this image

First seen on Oct 14. I estimate it has brightened to 11th magnitude. The coma can be traced out to a diameter of about 2 minutes. It remains very weakly condensed, say 2 or 3 on the standard DC scale. Still no sign of a nucleus. The straight tail is about 5 or 6 arc minutes long and has become more obvious. It is now immediately noticeable. The tail’s PA is 270°.  The comet’s observed motion is slow, heading N.No structure visible.

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