Space Debris: Predicted near impact for AO-51
The Joint Space Operations Center at Vandenberg AFB has reported that AO-51 will have a ~200 meter (i.e. 2 football fields) approach to object #34890 at 08:51Z on April 13th.
Object #34890 (see http://www.n2yo.com/satellite/?s=34890 and http://celestrak.com/NORAD/elements/iridium-33-debris.txt) is one piece of the more than 500 pieces of debris left over after the Iridium-33 -- Kosmos-2251 collision on Feb. 10,2009 (see http://en.wikipedia.org/wiki/2009_satellite_collision). The total mass of the two spacecraft was about 1600 kg (well over one ton).
You can get an HD movie animation of the Iridium/Kosmos collision here (warning -- 50 MB ZIP file).
73, Tom
It seems to me that everyone in LEO is getting warnings now. Unfortunately that crash caused a lot of debris. Delfi-C3 made it through ok, as well as the other cubes on our launch. so good luck to AO-51!
Wouter Weggelaar PA3WEG Delfi-C3 mission ops team
On Mon, Apr 12, 2010 at 5:45 AM, Tom Clark, K3IO [email protected] wrote:
The Joint Space Operations Center at Vandenberg AFB has reported that AO-51 will have a ~200 meter (i.e. 2 football fields) approach to object #34890 at 08:51Z on April 13th.
Object #34890 (see http://www.n2yo.com/satellite/?s=34890 and http://celestrak.com/NORAD/elements/iridium-33-debris.txt) is one piece of the more than 500 pieces of debris left over after the Iridium-33 -- Kosmos-2251 collision on Feb. 10,2009 (see http://en.wikipedia.org/wiki/2009_satellite_collision). The total mass of the two spacecraft was about 1600 kg (well over one ton).
You can get an HD movie animation of the Iridium/Kosmos collision here (warning -- 50 MB ZIP file).
73, Tom
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On 12 Apr 2010 at 12:20, wouter weggelaar wrote:
Date sent: Mon, 12 Apr 2010 12:20:23 +0200 From: wouter weggelaar [email protected] Subject: [amsat-bb] Re: Space Debris: Predicted near impact for AO-51 To: [email protected] Copies to: AMSAT BB [email protected]
It seems to me that everyone in LEO is getting warnings now. Unfortunately that crash caused a lot of debris. Delfi-C3 made it through ok, as well as the other cubes on our launch. so good luck to AO-51!
Wouter Weggelaar PA3WEG Delfi-C3 mission ops team
A general question is there is some sort of validation done when a satellite is put on an orbit? Could be due to the low orbit there is no collision avoidance calculus made? The doomed day already happen but is it possible another collision trigger a billard effect in space as per the following site:http://science.nasa.gov/realtime/Jtrack/3D/Jtrack3D.html
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On 4/11/2010 11:45 PM, Tom Clark, K3IO wrote:
The Joint Space Operations Center at Vandenberg AFB has reported that AO-51 will have a ~200 meter (i.e. 2 football fields) approach to object #34890 at 08:51Z on April 13th.
The Joint Space Command sent an update -- their latest prediction has reduced the 200 meter miss distance to ~135 meters
73, Tom
Is it just a coincidence that these warnings seem to be coming pretty often recently, or did NORAD change their reporting procedures, or is all the junk up there getting to critical mass where nothing is safe? It seems like we're heading into a situation like nuclear fission, where you get enough stuff interacting, and it sets up a chain reaction of collisions.
Greg KO6TH
Date: Tue, 13 Apr 2010 00:16:59 -0400 From: [email protected] To: [email protected] Subject: [amsat-bb] Re: Space Debris: Predicted near impact for AO-51
On 4/11/2010 11:45 PM, Tom Clark, K3IO wrote:
The Joint Space Operations Center at Vandenberg AFB has reported that AO-51 will have a ~200 meter (i.e. 2 football fields) approach to object #34890 at 08:51Z on April 13th.
The Joint Space Command sent an update -- their latest prediction has reduced the 200 meter miss distance to ~135 meters
73, Tom _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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Did AO-51 survived the approach?
On Mon, Apr 12, 2010 at 10:36 PM, Greg D. [email protected] wrote:
Is it just a coincidence that these warnings seem to be coming pretty often recently, or did NORAD change their reporting procedures, or is all the junk up there getting to critical mass where nothing is safe? It seems like we're heading into a situation like nuclear fission, where you get enough stuff interacting, and it sets up a chain reaction of collisions.
Greg KO6TH
Date: Tue, 13 Apr 2010 00:16:59 -0400 From: [email protected] To: [email protected] Subject: [amsat-bb] Re: Space Debris: Predicted near impact for AO-51
On 4/11/2010 11:45 PM, Tom Clark, K3IO wrote:
The Joint Space Operations Center at Vandenberg AFB has reported that AO-51 will have a ~200 meter (i.e. 2 football fields) approach to object #34890 at 08:51Z on April 13th.
The Joint Space Command sent an update -- their latest prediction has reduced the 200 meter miss distance to ~135 meters
73, Tom _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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--- On Tue, 4/13/10, Larry Teran [email protected] wrote:
From: Larry Teran [email protected] Subject: [amsat-bb] Re: Space Debris: Predicted near impact for AO-51 To: [email protected] Received: Tuesday, April 13, 2010, 1:33 PM Did AO-51 survived the approach?
<snip>
There were several stations operating over it during today's 1400 UTC pass over western North America.
Bernhard VA6BMJ @ DO33FL
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participants (6)
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B J -
Greg D. -
Larry Teran -
Luc Leblanc -
Tom Clark, K3IO -
wouter weggelaar