[BAA Comets] C/2012 X1 image from October 29

[Richard Miles]

Hi Denis and Nick,

If between you you can manage a high SNR result tomorrow that would be very 
helpful. Interesting to see the evolution as it reverts back to a comet with 
a normal tail.

In the case of 17P/Holmes, it took 7 days or so for a new tail to begin to 
appear - the delay most likely due to a slow rotation rate of its nucleus. I 
recently analysed some HST images of 17P that I had not known about 
previously - these have provided extra evidence for slow rotation of Holmes 
and a possible two-axis rotation state along the lines of Halley - Does the 
nucleus of C/2012 X1 have an anomalously slow rotation rate and/or tumbling 
rotation, I wonder?

Richard Miles

----- Original Message ----- 
From: "DENIS BUCZYNSKI" <buczynski8166 at btinternet.com>
To: "BAA Comets discussion list" <comets-disc at britastro.org>
Sent: Tuesday, October 29, 2013 6:18 AM
Subject: Re: [BAA Comets] C/2012 X1 image from October 29


> Hi Nick,
>
> well done getting this image. I got some too, but in very poor 
> conditions.We must have a very good coverage of the outburst now with 
> images we have obtained between us. It promises claer sky again tomorrrow 
> morning, so I will be out there again.
> Denis
>>________________________________
>> From: Nick James <ndj at nickdjames.com>
>>To: BAA Comets discussion list <comets-disc at britastro.org>
>>Sent: Tuesday, 29 October 2013, 5:41
>>Subject: [BAA Comets] C/2012 X1 image from October 29
>>
>>Morning all,
>>
>>After yesterday's big storm this morning has been clear and calm and I 
>>managed to get another image of C/2012 X1.
>>http://www.nickdjames.com/Comets/2013/2012x1_20131029_0500_ndj.jpg
>>The coma is still expanding and the rearward jet is still very prominent 
>>although the overall structure is fading.
>>
>>Nick.