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Sunday, October 28, 2012

2012 DA14 on closest fly by an asteroid of its size in history of tracking NEOs

Near Earth Asteroid (NEA) 2012 DA14, estimated diameter of about 45 meters and an estimated mass of about 130,000 metric tons, will speed by at a distance placing it between Earth and closer than man-made telecommunications satellites in geosynchronous orbit. However, the asteroid will not be visible to the naked eye.
The asteroid will pass by satellites in geostationary orbit about 35,800 kilometers (22,245 miles) above the equator, (providing a remote possibility putting a communications satellite at risk of being smashed*). [A reader has advised that the asteroid "won't cross geosynchronous orbit as its orbit is highly inclined." See comment below.]
The asteroid, the size of a city block, will squeeze by Earth's atmosphere and the geostationary satellites orbiting the planet. It will be the closest fly by an asteroid of its size in modern history of tracking asteroids. Experts say there is no chance the asteroid will hit Earth - this time. But with more than 4,700 asteroids NASA has identified as potential threats to Earth, some as big as 16 football fields, these objects are getting a lot of attention (NBC News video).
If asteroid 2012 DA14 were to hit Earth, the impact would release the rock's energy of about 2.4 megatons.  More from Red Orbit, The Watchers, Big Think, Discover Magzine, and EarthSky.


Barrie said...

Jack, it wont cross geosynchronous orbit as its orbit is highly inclined. It will be travelling pretty much south to north,

JackKennedy said...

Thank you, Barrie, for brining this to my attention. Much appreciated.

Barrie said...

Sorry, Jack. I based my earlier comment on a verbal description I had read of how the asteroid would move in the sky. Now I have looked at the orbit using the tool on the NASA/JPL website, it is not as inclined as I had assumed. If astronomers are saying its plane coincides with the equatorial plane at the time of encounter, I imagine they are right :-)

JackKennedy said...

No problem, Barry. We should all be skeptics, question and learn. Time will tell what the correct encounter will be Feb. 13th. Please continue your kind contributions.

P.F.S. said...


Do a little History on this one.

ALL Should Look Up "2012 DA14".

This could take out one of more satellites and the junk and debris from the hit could end up taking out many more satellites very soon after that. All the satellite collision probability will go way up if even one is hit. The velocity that the parts would go to would make them missiles that would start targeting a chain reaction this would not be good.

Most all will be watching this one and pray it goes by us with out a hit. Every Scientist alive will be watching this event. Many will be in Florida for a very special viewing of the once in a Lifetime Event. Professors, Scientist, World Leaders, Ham Radio Operators and Every Astronomer will have its eyes on This Event, along with almost every TV set on Earth.

"2012 DA14" goes by Earth twice a year and there is no way anyone for sure can tell how close the second pass will be till it passes by the Moon and Earth and the GRAVITATIONAL FORCE effect that it will have on this Asteroid.

They may come close but this one is already coming very close to begin with. Too close this time or on its second or 3rd pass? Ad a Meteor Shower like the 13 and 14 of December of this year, it might go through or bump into one of them? Or all the other orbital debris like Spent Rocket Boosters left in space that can no longer be moved by a control center on Earth.

If a big enough one were to slam into the moon in the night sky you would think the sun was coming up early only it would be 5 to 7 times as bright. From The Sun's Rays Reflection on all the Debris Field.

2012 XM16, 2012 XM55, 2012 XP55, THERE ARE OVER 25 found just this year 2012 that are part of the Near Earth Object Program that will come close to Earth from now till 2012 DA14 comes.

You do not want to know how many are on the "PLANETARY DEFENSE" list.
The PLANETARY DEFENSE is not to protect Earth from men from Mars.
It is for all mankind with most all Nation in on it to stop if can most all collision with EARTH from a ASTEROID IMPACT. It is if you will a AVOIDANCE SHIELD. "N.E.O.S. Near Earth Object Shield".

If only one were to hit or IMPACT EARTH on land get ready for a winter you will never forget. The winter from 1883 -1884 KRAKATOA you will think was a little pebble, and now the stone comes.

If this Meteor Shower is big enough you might think all the stars are falling from Heaven.


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