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Posted by Robert Maas, http://tinyurl.co on February 25, 2009, 5:33 am


> Perhaps they were texting and weren't paying attention to where
> they were going.

Or maybe they were entertaining a gal they had picked up in a bar,
using the pickup line "If you come with me, I'll let you drive a
vehicle on Mars." (reference to episode of "The Big Bang Theory"
when a guy sorta did that, and as a result got the Mars rover
stuck in a ditch, which rhymes with the last words of the guy
in the epilog/fakeEnding: s/tuck/on/ s/in/of/ s/d/b/)

Posted by Sam Wormley on February 17, 2009, 8:58 am


Sam Wormley wrote:
> TWO SATELLITES COLLIDE IN ORBIT
> -------------------------------
> In an unprecedented space collision, a commercial Iridium communications
> satellite and a presumably defunct Russian Cosmos satellite ran into each
> other Tuesday above northern Siberia, creating a cloud of wreckage,
> officials said today.
>
> http://spaceflightnow.com/news/n0902/11iridium/


Space Weather News for Feb. 16, 2009
http://spaceweather.com

WEEKEND FIREBALLS: A daylight fireball over Texas on Sunday, Feb. 15th,
triggered
widespread reports that debris from a recent satellite collision was falling to
Earth.
Those reports were premature. Researchers have studied video of the event and
concluded
that the object was more likely a natural meteoroid about one meter wide
traveling more
than 20 km/s--much faster than orbital debris. Meteoroids hit Earth every day,
and the
Texas fireball was apparently one of them.

There's more: On Friday, Feb. 13th, people in central Kentucky heard loud booms,
felt
their houses shake, and saw a fireball streaking through the sky. This occurred
scant
hours after another fireball at least 10 times brighter than a full Moon lit up
the sky
over Italy. Although it is tempting to attribute these events to debris from
the Feb.
10th collision of the Iridium 33 and Kosmos 2251 satellites, the Kentucky and
Italy
fireballs also seem to be meteoroids, not man made objects. Italian scientists
are
studying the ground track of their fireball, which was recorded by multiple
cameras, and
they will soon begin to hunt for meteorites.

Videos, eye-witness reports and more information about these events may be found
at
http://spaceweather.com .


Posted by Runge13 on February 23, 2009, 4:58 pm


Why do americans have to play cub reporters with their OT copy/paste ??!!

> Sam Wormley wrote:
>> TWO SATELLITES COLLIDE IN ORBIT
>> -------------------------------
>> In an unprecedented space collision, a commercial Iridium communications
>> satellite and a presumably defunct Russian Cosmos satellite ran into each
>> other Tuesday above northern Siberia, creating a cloud of wreckage,
>> officials said today.
>> http://spaceflightnow.com/news/n0902/11iridium/
> Space Weather News for Feb. 16, 2009
> http://spaceweather.com
> WEEKEND FIREBALLS: A daylight fireball over Texas on Sunday, Feb. 15th,
> triggered widespread reports that debris from a recent satellite collision
> was falling to Earth. Those reports were premature. Researchers have
> studied video of the event and concluded that the object was more likely a
> natural meteoroid about one meter wide traveling more than 20 km/s--much
> faster than orbital debris. Meteoroids hit Earth every day, and the Texas
> fireball was apparently one of them.
> There's more: On Friday, Feb. 13th, people in central Kentucky heard loud
> booms, felt their houses shake, and saw a fireball streaking through the
> sky. This occurred scant hours after another fireball at least 10 times
> brighter than a full Moon lit up the sky over Italy. Although it is
> tempting to attribute these events to debris from the Feb. 10th collision
> of the Iridium 33 and Kosmos 2251 satellites, the Kentucky and Italy
> fireballs also seem to be meteoroids, not man made objects. Italian
> scientists are studying the ground track of their fireball, which was
> recorded by multiple cameras, and they will soon begin to hunt for
> meteorites.
> Videos, eye-witness reports and more information about these events may be
> found at http://spaceweather.com .
>


Posted by Jon on February 20, 2009, 10:02 am


> TWO SATELLITES COLLIDE IN ORBIT
> -------------------------------
> In an unprecedented space collision, a commercial Iridium communications
> satellite and a presumably defunct Russian Cosmos satellite ran into each
> other Tuesday above northern Siberia, creating a cloud of wreckage,
> officials said today.
> =A0 =A0http://spaceflightnow.com/news/n0902/11iridium/

A colleague sent me the following link to AGI's site, which may be of
interest to some:

<http://www.agi.com/corporate/mediaCenter/news/iridium-cosmos/>


Regards,
Jon

Posted by Wayne R. on February 22, 2009, 10:35 am


wrote (with clarity & insight):

>TWO SATELLITES COLLIDE IN ORBIT

One last question from me and I'll shut up: Are the measurements of
any of the four dimensions an orbiting object could be measured by
precise & accurate enough for actionable collision prediction
calculations?

I imagine altitude is the biggest problem, but maybe none of the
measurements really are precise/accurate enough. Maybe some are? Maybe
all are good enough but one?

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