Connection between C/2012 S1 (ISON) and the Great Comet of 1680?

SpaceEagle

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Have you guys noticed that the Great Comet of 1680 appeared exactly 333 years before the expected arrival of comet C/2012S1 ISON? Could it be the same comet? Also, pay attention to the number 333!
 

Urwumpe

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My assault rifle at the army had the serial number ending with 666. Nothing special about it.
 

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Have you guys noticed that the Great Comet of 1680 appeared exactly 333 years before the expected arrival of comet C/2012S1 ISON? Could it be the same comet? Also, pay attention to the number 333!

No, because both comets you mentioned have orbital periods upwards of 10000 years.
 

Evil_Onyx

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Have you guys noticed that the Great Comet of 1680 appeared exactly 333 years before the expected arrival of comet C/2012S1 ISON? Could it be the same comet? Also, pay attention to the number 333!

There is some discussion that the two comets may have come from the same source body, but they are defiantly different objects.
 

Kyle

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No, it is not the same comet. However, there is evidence to suggest that ISON and the Great Comet of 1680 may have came from the same parental body. http://tech.groups.yahoo.com/group/comets-ml/message/19851

Some further thoughts and speculation on my part concerning the new comet.

At the moment the most interesting aspect of this new object to me are the
orbital elements' distinct and surprising similarity to those of the Great
Comet of 1680. Let me point out that it would seem to me to be a virtual
impossibility for this to be just pure coincidence. Let me explain further.

Other than true Kreutz Sungrazers, other comets having a q even
approaching 0.05 AU are so exceedingly rare that in all of cometary history
their
number can be counted on less than the fingers of one hand. That the two with
by far the smallest recorded values of q should also share even somewhat
similar values of L and B strictly by chance seems to me to be mind boggling.
And while L and B would indeed result in a great separation in the
position of the two comets near aphelion, at the time nearest perihelion
passage
the orbits may come quite close together and might even be found to cross
as the elements of 2012 S1 become better refined (or perhaps those of the
1680 comet could be re-defined?).

The Great Comet of 1680 had a supposed e of 0.999986 . Should comet 2012 S1
begin to show an e of anything less than 1.0 in coming months I think that
the conclusion that the two comets are at least in some manner directly
related becomes almost inescapable. Purely as speculation, perhaps the two
bodies could have been one a few revolutions ago.
 

Urwumpe

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Eccentricity alone is a poor measure there. If it both would have had been close within some AU error and that a few hundred years ago, I would consider this idea.

But direct evidence would be hard...like similar composition, which we don't know for the first one.
 

Kyle

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Eccentricity alone is a poor measure there. If it both would have had been close within some AU error and that a few hundred years ago, I would consider this idea.

But direct evidence would be hard...like similar composition, which we don't know for the first one.

Wouldn't the peak apparent magnitude be an indicator of how similar the composition is to the Great Comet of 1680, if ISON becomes just as bright as that one was?
 
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