Comet C/2012 S1 - ISON

What are the projected dates for Earth to pass through Isons debris field?
I wonder how much of a dust load we will pick up from that and how it might effect already perturbed weather patterns. it may be quite a show. (wheres the icon with binoculars or a telescope?)
I am also reminded of the C's telling of a stellar body that presents as a single but then turns out to be multiple. I always took that to mean it was a hidden multiple but now am considering it could be a larger body that fragments.
Any way we look at it, the next couple of months should prove to be very interesting.
 
More new pictures from NASA STEREO orbiters. Probably ISON seen now from STEREO B, close to sun.
_http://stereo.gsfc.nasa.gov/browse/2013/11/26/behind/cor2/2048/20131126_193924_d7c2B.jpg
 
The latest reports seem to indicate that comet ISON may possibly have fragmented (less ionization and more dust production). If it is the case, the survival of relatively big chunks may be interesting, especially if deviations from the original orbit is noticeable.
 
mkrnhr said:
The latest reports seem to indicate that comet ISON may possibly have fragmented (less ionization and more dust production). If it is the case, the survival of relatively big chunks may be interesting, especially if deviations from the original orbit is noticeable.
Click to expand...

That's what I was wondering about: deviations in the orbit. The next couple of days will be interesting.
 
Laura said:
That's what I was wondering about: deviations in the orbit. The next couple of days will be interesting.
Click to expand...
They will be indeed. It has been already noticed that the comet is trailing behind its expected orbit: _http://groups.yahoo.com/neo/groups/comets-ml/conversations/topics/22461
5" to 7" at the distance of the comet correspond roughly to a 3400 to 4700 km range.
 
I think this is the latest video, the ISON getting brighter!

https://www.youtube.com/watch?v=ATx6B_bYDZ0
 
ISON will swing (or not) around the sun in the next few hours. Attached is a pic from _http://stereo.gsfc.nasa.gov/beacon/
 

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we can normally see it passing through here: _http://cometison.gsfc.nasa.gov/
The passage through the first field should be in a few minutes.
 
mkrnhr said:
we can normally see it passing through here: _http://cometison.gsfc.nasa.gov/
The passage through the first field should be in a few minutes.
Click to expand...

Which is the best one to click to see?
 
Laura said:
mkrnhr said:
we can normally see it passing through here: _http://cometison.gsfc.nasa.gov/
The passage through the first field should be in a few minutes.
Click to expand...

Which is the best one to click to see?
Click to expand...

They said this:

The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO) may be designed to provide an unprecedented view of the solar corona, but it sees comets in a different light.

When we see a comet in AIA we see light coming from ions of oxygen. Comets have a lot of oxygen (water ice is one part oxygen to two parts hydrogen) and that oxygen can light up the corona for quite awhile after it sublimates off the comet. The brightness fades as the oxygen spreads out into the corona and eventually the normal glow of iron ions returns.

For comet viewing:

AIA 171: four times ionized oxygen (O V)
AIA 193: four times ionized oxygen (O V)
AIA 211: three times ionized oxygen (O IV)
AIA 131: five times ionized oxygen (O VI)
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I'm guessing AIA 131, but I could be wrong.
 
I think it's interesting to monitor the four panels in parallel. They do observe in the ultraviolet in different wavelengths.
 
mkrnhr said:
I think it's interesting to monitor the four panels in parallel. They do observe in the ultraviolet in different wavelengths.
Click to expand...

Or the hangout here:

http://youtu.be/q03I1B_yrPg

and

https://plus.google.com/s/%23cometison2013
 
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