2017o1 20171022 asnook

 Observer
Alan Snook
Time of observation
22/10/2017 - 22:45
Object
Comet ASASSN1
Observing location
Kent
Equipment
0.5m f4.1 Dobsonian
17mm & 8mm Ethos eyepieces x120 & x260
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.