Comet ISON Update: Meteor Activity Possible on January 15


Comet ISON is considered dead, but in the latest update a forecaster says that meteor activity from when it was still alive could reach the Earth on January 15.

While the comet was traveling toward the sun, where it likely ultimately met its demise, the comet passed around two million miles from the Earth’s orbit. The Earth arrives at this point on January 15, according to Robert Lundsford of the American Meteor Society.

“Comet ISON was producing a large amount of dust prior to its disintegration,” he wrote in a blog post. “Some feel that despite the distance that some of this dust may still reach the Earth.”

This activity could be in the form of meteors or just clouds.

“The individual dust particles are calculated to be only a few microns in size, too small to produce meteors bright enough to be visible to the naked eye,” he said. “Yet meteor observers are encouraged to view any possible display of meteor activity despite the full moon.”

He added: “While the probability of meteor activity is remote, it is not 100 percent out of the question.”

The area the meteor activity would appear in the sky would lie in the constellation of Leo the lion, which rises during the early evening hours. 

Radiant Area for Possible ISONids Meteors

(American Meteor Society)

Veteran meteor researcher Paul Wiegert of the University of Western Ontario, using computer models of the trajectory of the dust ejected from the comet, said that a meteor shower could come for several days around January 12.

“For several days around January 12, 2014, Earth will pass through a stream of fine-grained debris from Comet ISON,” Wiegert told Dr. Tony Phillips of NASA last year. “The resulting shower could have some interesting properties.”

The debris stream will be hitting at a speed of 56 kilometers per second, or 125,000 miles per hour, but Wiegert projects that they’ll be so small that Earth’s upper atmosphere will slow them to a stop.

“Instead of burning up in a flash of light, they will drift gently down to the Earth below,” he said.

The dust could take years to settle out of the high atmosphere, and during that process produce noctilucent clouds, which are icy clouds that glow electric-blue as they float above Earth’s poles. 

“This is still speculative, but Comet ISON could provide the seeds for a noctilucent display,” wrote Phillips. “Electric-blue ripples over Earth’s polar regions might be the only visible sign that a shower is underway.”

The dust particles are projected to not be a problem for the International Space Station, though astronauts on board are being told to be careful and keep an eye out for possible anomalies.

“Sky watchers should probably be alert, too,” wrote Phillips. “The odds of seeing anything are low, but Comet ISON could prove full of surprises.”

Category: Science Space

  • Jesse4

    I notice they didn’t mention the effects of the comet dust on the recently dead.
    But, I guess there’s plenty of time for panic later.

  • MacFly1

    ,,,”astronauts on board are being told to be careful and keep an eye out for possible anomalies…”

    The ninth and final sign of destruction is described by White Feather as, “You will hear of a dwelling-place in the heavens, above the earth, that shall fall with a great crash. It will appear as a blue star. Very soon after this, the ceremonies of my people will cease.”. This idea of the Blue Star Kachina marking the end of all Hopi rituals is reflected in Waters’ book, Book of the Hopi, in which he states, “The end of all Hopi ceremonialism will come when a Kachina removes his mask during a dance in the plaza before uninitiated children.”

  • HikerGatherer

    I saw the brightest meteor I’ve ever seen last night in the northern sky. It lasted several seconds and it was GREEN. Perhaps there’s more to the ISON meteor shower than expected? Perhaps it was coincidence.

  • frikkiebotes

    Every day they move the impact a day further. on 29 Dec 2013 it would have been in line with the earth, on Jan 12 it could have hit earth, now on Jan 15 it might hit earth. earth is already 60 earth units out of the way of ison, nothing is going to hit the earth.


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