Asteroid 2012 DA14. Quake?

NASA Science News for Feb. 14, 2013

Some researchers believe that near-Earth asteroid 2012 DA14 might
experience seismic activity when it flies through our planet's
gravitational field on Feb. 15th. Observatories around the world will be
on the lookout for signs of an 'asteroid-quake' during the space rock's
close approach.

FULL STORY:
http://science.nasa.gov/science-news...steroidquakes/

RELATED VIDEO: http://www.youtube.com/watch?v=GwidzVHvbGI

On Feb 14, 4:10*pm, "W. eWatson" wrote:
NASA Science News for Feb. 14, 2013

Some researchers believe that near-Earth asteroid 2012 DA14 might
experience seismic activity when it flies through our planet's
gravitational field on Feb. 15th. Observatories around the world will be
on the lookout for signs of an 'asteroid-quake' during the space rock's
close approach.

FULL STORY:http://science.nasa.gov/science-news...13/14feb_aster...

RELATED VIDEO:http://www.youtube.com/watch?v=GwidzVHvbGI

No quake (unless it hits us), but one of the associated rocks just
fell on Russia.

On Feb 14, 5:10*pm, "W. eWatson" wrote:
Some researchers believe that near-Earth asteroid 2012 DA14 might
experience seismic activity when it flies through our planet's
gravitational field on Feb. 15th. Observatories around the world will be
on the lookout for signs of an 'asteroid-quake' during the space rock's
close approach.

This would prove that Newton was right in attributing the orbital
motion of planets to their natural straight-line motions being bent by
the same kind of gravitational forces that cause things to fall down
on Earth!

John Savard

On Feb 15, 5:38*am, Quadibloc wrote:
On Feb 14, 5:10*pm, "W. eWatson" wrote:

Some researchers believe that near-Earth asteroid 2012 DA14 might
experience seismic activity when it flies through our planet's
gravitational field on Feb. 15th. Observatories around the world will be
on the lookout for signs of an 'asteroid-quake' during the space rock's
close approach.

This would prove that Newton was right in attributing the orbital
motion of planets to their natural straight-line motions being bent by
the same kind of gravitational forces that cause things to fall down
on Earth!

John Savard

It'll take a good million tonnes of mass, passing us by us at a near
miss of 1.01r before any measurable quake. Below that altitude of
209,000' would become an air burst consideration of considerable
energy release as it aerobrakes and likely explodes, and obviously
becomes very bad news if it lithobrakes into or glancing off of the
surface.

Encountering an icy planetoid of 7.5e22 kg, as a glancing blow would
create a substantial ocean basin and transform most of Earth into a
fire ball of quakes, as well as causing s slight orbital shift, a few
rotational issues along with a new seasonal tilt depending on it's
impact angle, location and of course its velocity.

On Thu, 14 Feb 2013 22:23:22 -0800 (PST), Brad Guth
wrote:

No quake (unless it hits us), but one of the associated rocks just
fell on Russia.

The meteor that fell over Russia is unrelated to DA14.

On Feb 15, 5:38*am, Quadibloc wrote:
On Feb 14, 5:10*pm, "W. eWatson" wrote:

Some researchers believe that near-Earth asteroid 2012 DA14 might
experience seismic activity when it flies through our planet's
gravitational field on Feb. 15th. Observatories around the world will be
on the lookout for signs of an 'asteroid-quake' during the space rock's
close approach.

This would prove that Newton was right in attributing the orbital
motion of planets to their natural straight-line motions being bent by
the same kind of gravitational forces that cause things to fall down
on Earth!

John Savard

Incoming asteroids: “This isn't over“, and nowadays it’s becoming a
matter of how often those 1+ tonne rocks arrive. Fortunately most
haven’t been of any sufficient metallicity density, as otherwise we’d
be having to deal with craters from their impacts in addition to their
supersonic entry of explosive shockwaves.

The arriving Sirius Oort cloud should offer at least a million times
as many items as our Oort cloud, and on average offering a thousand
times greater individual mass than our own Oort cloud has to offer.
Most of us have no idea as to how massive those Sirius stars were to
begin with, and we apparently don’t want to even contemplate as to the
vast extent and massive nature of what its 8 light year radius Oort
cloud has to offer.

This latest episode of asteroid encounters is becoming more than once
a day that a 10+ tonne rock is directed at us or otherwise encountered
by Earth. Is this going to be considered as too often or about right?

Obviously our planet encounters thousands of those kg or less massive
items most every day (for the most part vaporizing well before surface
contact), although lucky us because, apparently not much of anything
encountered Earth or that of our naked moon throughout all of the
Apollo era (even the sun remained passive, w/o UV or X-rays according
to all of their Kodak film, not to mention local gamma and hard-X-rays
were never an issue).

http://en.wikipedia.org/wiki/Meteorite
According to many others that extensively research into this influx,
whereas roughly 3650 thousand tonnes of stuff gets encountered by our
planet every year (10,000 tonnes/day), and fortunately the vast
majority (99.9%) being of items less than a kg that for the most part
never reach the surface, although some meteorite remainders plus loads
of the really small and low density stuff does manage to filter
through. That’s getting those bigger than kg items down to the dull
roar of perhaps 3650 tonnes per year or 10 tonnes/day that we’ll get
to duck and take cover from, with perhaps only a small percentage
(less than 25%) of that mass surviving its atmospheric entry enough to
impact or land on the surface. Of course those of bigger than 10
tonne items stand a somewhat better chance of getting through and
landing on the surface, especially if comprised of fused basalt or
carbonado along with a sufficient percentage of heavy metals that make
them diamagnetic or even paramagnetic.

There’s actually several teratonnes of paramagnetic basalt from
encountering our physically dark moon, that’s on the surface and
mostly hidden under water. Now that’s what a real nasty asteroid can
deliver in addition to its ice and considerable lithobraking trauma.

Brad Guth:
No quake (unless it hits us), but one of the associated rocks just
fell on Russia.

Chris L Peterson:
The meteor that fell over Russia is unrelated to DA14.

In fact, the relative angle of approach of the two objects was 180
degrees, with DA14 moving S to N and the Chelyabinsk object moving N to
S. Guth apparently lives in the Star-Trek world where objects, even
those with superluminal velocities, can make U-turns.

According to the USGS the Chelyabinsk object caused a magnitude 4
earthquake, first detected in Alaska.

--
I agree with almost everything that you have said and almost everything that
you will say in your entire life.

usenet *at* davidillig dawt cawm

In Davoud wrote:

Brad Guth:
No quake (unless it hits us), but one of the associated rocks just
fell on Russia.

Chris L Peterson:
The meteor that fell over Russia is unrelated to DA14.

In fact, the relative angle of approach of the two objects was 180
degrees, with DA14 moving S to N and the Chelyabinsk object moving N
to S. Guth apparently lives in the Star-Trek world where objects, even
those with superluminal velocities, can make U-turns.

You two have the advantage of waiting until some analysis of the event
had been performed, rather than posting almost immediately after the
event with no hard information.

And where's the fun in that?

--
St. Paul, MN

On Feb 17, 8:41*am, Chris L Peterson wrote:
On Thu, 14 Feb 2013 22:23:22 -0800 (PST), Brad Guth

wrote:
No quake (unless it hits us), but one of the associated rocks just
fell on Russia.

The meteor that fell over Russia is unrelated to DA14.

We're not at all certain of that, just like our second moon/
asteroid(1.3e14 kg) could have been part of the same initial event.

http://en.wikipedia.org/wiki/3753_Cruithne

A 2r near-miss by Cruithne could cause earthquakes.

On Feb 17, 11:08*am, Bert wrote:
wrote:

Brad Guth:
No quake (unless it hits us), but one of the associated rocks just
fell on Russia.

Chris L Peterson:
The meteor that fell over Russia is unrelated to DA14.

In fact, the relative angle of approach of the two objects was 180
degrees, with DA14 moving S to N and the Chelyabinsk object moving N
to S. Guth apparently lives in the Star-Trek world where objects, even
those with superluminal velocities, can make U-turns.

You two have the advantage of waiting until some analysis of the event
had been performed, rather than posting almost immediately after the
event with no hard information.

And where's the fun in that?

--
*St. Paul, MN

ZNR/GOP mafia types are pretty much all alike.

All asteroids are part of the same event(s), as well as events
contributed from other stars that we get too close to.

All retrograde asteroids are captured, as well as at least some
prograde asteroids.