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Originally posted by airtrax007
and see that it does actually hit mars on jan 30 --type in 2007wd5 and see the simulation...
Michael Lonerganon 20 Dec 2007 at 11:11 pm
“Most likely it will miss, but it would be totally cool if it hits.” ROFL. I’m going to tell Hoagie that you said that! It would be too cool if it smashed into the face at Cydonia, and demolished it and the pyramid hill. No wait. Then he would claim it was a NASA conspiracy to re-direct the Asteroid to cover up the truth of what’s on mars. Simply Astounding.
Originally posted by zorgon
Okay so according to this simulation this thing looks like it just brushed the Earth on Nov 5 2007
And this didn't make the news because????
You can expect to fork over more tax dollars to buy that Anti Asteroid Space Cannon and the fleet of spotter ships...
Originally posted by mel1962
So in other words, they just found this thing and luckly it misses the earth????
Astronomers in NASA’s Near Earth Object (NEO) monitoring program are tracking the trajectory of an asteroid estimated to be 50 meter (160 feet) wide that is expected to cross Mars' orbital path early next year. Observations provided by the astronomers and analyzed by NASA's NEO Office at the Jet Propulsion Laboratory in Pasadena, Calif., indicate the object is likely to pass within 50,000 kilometers (30,000 miles) of Mars at 5:55 a.m. EST (10:55 UT) on Jan. 30, 2008. There is also a 1 in 75 probability that the asteroid will slam into the planet at that time.
"Right now asteroid 2007 WD5 is about half-way between the Earth and Mars and closing the distance at a speed of about 27,900 miles per hour," said Don Yeomans, manager of the Near Earth Object Office at JPL. "Over the next five weeks, we hope to gather more information from observatories so we can further refine the asteroid's trajectory."
Such a collision could release about three megatons of energy. Scientists believe an event of comparable magnitude occurred here on Earth in 1908 in Tunguska, Siberia, but no crater was created.
Tonight, just after sunset, the full Moon and Mars will rise in the east less than 2o apart.
Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.
On December 23, 2007 there were 913 potentially hazardous asteroids.
Originally posted by zorgon
Mod Edit: New Forum Image Linking Policy – Please Review This Link.
[edit on 22-12-2007 by Jbird]
Diverting the course of an asteroid requires only a small Δv, if the deflection is done far enough in advance of earth impact. The displacement
is proportional to both the lead time and Δv.1 Done well in advance, diverting an asteroid that would otherwise come no
closer than midway between earth and moon requires imparting a Δv
of at least several tens of meters per second to the asteroid. Deflecting
an asteroid within days of its closest approach to earth would require
a very large Δv, on the scale of kilometers per second. It is only
possible to deflect an intermediate-size asteroid well in advance.