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Originally posted by mikegrouchy
I'm not taking their word for it,
I'm sick of taking their word for it,
Originally posted by mikegrouchy
I think we would be better off looking at the possible 333 year periodicity of this thing,
Originally posted by Melbourne_Militia
What are the chances that the suns gravitational pull will affect its orbit as it passes the sun?
i.e. ISON is planned to fly past earth 65million km away (for example), but after passing the sun that distances halves.....
Is that possible?
Will it pass close enough to the sun for the sun to pull it in? i.e. impact with sun.
Originally posted by mikegrouchy
Like all comets, ISON is a dirty snowball made up of dust and [color=gold] frozen gases such as water, ammonia, methane and carbon dioxide.
If they are gasses then where is the spectroscopy?
I'm not taking their word for it,
I'm sick of taking their word for it,
It's not like we-mere-mortals can't understand a spectragraph.
The technology goes back to 1890.
And WTF do they mean by water.
Are they using the fuzzy definition where it actually means frozen methane, that is turned to gas, so that it was never technically water(H2O) but was (CH4)?
I'm mean they haven't said a damn thing really have they.
I think we would be better off looking at the possible 333 year periodicity of this thing,
than reading anything the Hubble custodians are allowed to say about it.
Bunch janitors with forked tongues.
Mike
Comet ISON Meteor Shower
Wiegert notes another curiosity: "The shower is going to hit our planet from two directions at once." When Earth passes through the debris stream, we will encounter two populations of comet dust. One swarm of dust will be following the Comet ISON into the sun. Another swarm will be moving in the opposite direction, pushed away from the sun by solar radiation pressure. The streams will pepper opposite sides of Earth simultaneously. "In my experience, this kind of double whammy is unprecedented," says Wiegert.
“About 10,000 years ago, Comet ISON left our solar system’s distant shell, a region known as the Oort cloud, and began streaking toward the sun. This November, the icy wanderer will reach the climax of its journey, potentially providing a stunning skywatching show here on Earth.” – Discovery News 07/18/2013
Originally posted by Phantasm
ISON is behind the Sun right now and 4 months from now we should see it emerging big & bright. I'm sure it will be visible in daylight for more than 24 hours...maybe days or weeks!
Originally posted by Phantasm
ISON is behind the Sun right now and 4 months from now we should see it emerging big & bright. I'm sure it will be visible in daylight for more than 24 hours...maybe days or weeks!
Comets have always been harbingers of doom. It will be interesting to see how different cultures respond to the sight of such a comet and what events may take place when the comet passes...
Fire and brimstone (meteor shower) will impact Earth from 2 directions! That should be a good show! A Comet of the Century and a double meteor shower all at the same time...and December 21st, 2013 RIGHT IN THE MIDDLE OF IT ALL!
The return of the Great Purifier!
Night Sky Hunter
Exciting news!!!, a new comet has just been discovered which could turn into the greatest comet of our lifetime!. Comet C/2012 S1 (ISON) is currently magnitude 18 and beyond the orbit of Jupiter, however preliminary observations indicate that the comet will pass close to both the Sun and Earth during the latter half of 2013 when comet ISON could obtain a negative magnitude and become a great comet. In fact, serious calculations already predict a peak brightness anywhere between magnitude - 10 and -15 which is considerably brighter than a full Moon!!. Furthermore the comet could become visible in broad daylight close to the sun during late November!. During post perihelion the comet will move into the W evening sky during December and January when it will become a circumpolar object for observers at northern latitudes and become visible all night long during which time the comet could sport a vast dust tail, some experts have even speculated that the tail unfurled could be the longest ever recorded in history.
''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?)''
Originally posted by alfa1
Originally posted by Phantasm
ISON is behind the Sun right now and 4 months from now we should see it emerging big & bright. I'm sure it will be visible in daylight for more than 24 hours...maybe days or weeks!
No.
It will be about magnitude 12 or 13 when it becomes visible again, too faint for anything expect an above average amateur telescope. And it wont be visible in daylight except for a few hours on November 28th. And maybe not even that.
MPC
Comet C/2012 S1 (ISON) is currently magnitude 18 and beyond the orbit of Jupiter, however preliminary observations indicate that the comet will pass close to both the Sun and Earth during the latter half of 2013 when comet ISON could obtain a negative magnitude and become a great comet. In fact, serious calculations already predict a peak brightness anywhere between magnitude - 10 and -15 which is considerably brighter than a full Moon!!. Furthermore the comet could become visible in broad daylight close to the sun during late November!.
Originally posted by Phantasm
Comet C/2012 S1 (ISON) is currently magnitude 18 and beyond the orbit of Jupiter, however preliminary observations indicate that the comet will pass close to both the Sun and Earth during the latter half of 2013 when comet ISON could obtain a negative magnitude and become a great comet. In fact, serious calculations already predict a peak brightness anywhere between magnitude - 10 and -15 which is considerably brighter than a full Moon!!. Furthermore the comet could become visible in broad daylight close to the sun during late November!.