Thursday, February 26, 2009

Houston Chronicle - ‎6 hours ago‎
2009 AP DALLAS — The 6-pound chunk of metal that fell from the sky and tore a hole through the roof of a Dallas home might have some rather routine earthly ...

Mysterious metal chunk slams into Texas home

KARE - ‎20 hours ago‎
They discovered a gaping hole in their roof, another hole in a bedroom and a chunk of metal on their kitchen floor. It was described as a 6-pound piece of ...

DPD Finds Source Of Metal Piece That Fell From Sky

CBS 11 - ‎51 minutes ago‎
They say the 6-pound chunk of metal was thrown out of the 'hogzilla grinder.' The machine is used to grind huge trees. Investigators said four pieces of the ...

Chunk of metal crashes through roof near NJ man
The Associated Press
- ‎Feb 18, 2009‎
A chunk of hot metal the size of a brick came crashing through the roof just steps from him. It splintered a wooden beam and crashed into a shelf. ...
Newsday - Philadelphia Inquire

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Omroep Brabant - ‎2 hours ago‎
EINDHOVEN - Een meteoriet is woensdagavond door het raam van Ed van den Akker uit Eindhoven gevallen. De steen weegt ruim 100 gram. ...

Omroep Brabant - ‎3 hours ago‎
Als het een echte meteoriet betreft, zou dat redelijk uniek zijn, zoals deze die landde in Antarctica. (Foto: ANP) EINDHOVEN - Een meteoriet is ...

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Rob at Orbiting Frog is too cool: he has software that allows you to track the debris from the recent satellite collision using Google Earth. You can follow the debris in real time! That is so excellent.

This makes me wonder why the guys at NORAD and other trackers didn’t know this collision was going to happen before it occurred. There are a lot of satellites, and the orbits change, but it seems simple enough to write code that allow you to see if any two satellites come within, say, a kilometer of each other at any given time. You could run that every time you update the orbital parameters of the satellites. So I’m scratching my head about that. Anyone out there in BABlogland have any inside knowledge?

SATELLITE DEBRIS: US Strategic Command is still cataloguing debris from the Feb. 10th satellite collision over northern Siberia. "The count is now at 109 catalogued fragments for Iridium 33 and 245 for Kosmos 2251," says satellite observer Daniel Deak, who has prepared some 3D maps of the debris for readers of Click on the image to view a snapshot of Kosmos fragments on Feb 26th:

A similar image shows Iridium 33 debris, and other views are available, too: #1, #2, #3, #4, #5.

These maps reveal in full what earlier, less complete maps strongly hinted: Kosmos debris is scattered more widely than Iridium. "Kosmos fragments range in altitude from 250 km to 1690 km," says Deak. For comparison, "Iridium fragments range only from 525 km to 1092 km." Kosmos fragments descend all the way down to the 350 km orbit of the ISS. The space station is in little danger, however; most of the Kosmos scatter is over the Antarctic where the ISS does not go.

The total debris count now stands at 354 pieces. Says Deak, "There are surely more to come."

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