NASA news conference is saying the Navy will try to shoot down the soon to deorbit spy satellite. Should be fun!
Bob, WB4APR
Could a hit cause pieces to fly into higher orbits?
On Feb 14, 2008, at 12:48 PM, Robert Bruninga wrote:
NASA news conference is saying the Navy will try to shoot down the soon to deorbit spy satellite. Should be fun!
Bob, WB4APR
On Thu, Feb 14, 2008 at 3:48 PM, Robert Bruninga bruninga@usna.edu wrote:
NASA news conference is saying the Navy will try to shoot down the soon to deorbit spy satellite. Should be fun!
Bob, WB4APR
Bob:
Some media reports are comparing the US Navy shoot-down to the one that China conducted recently, which resulted in a considerable increase in space debris in LEO. I can only assume that this is incorrect and that the US Navy will attempt this once the orbit has decayed to the point that the debris will quickly deorbit. Do you have any knowledge or thoughts you can share?
73, Bruce VE9QRP
Some media reports are comparing the US Navy shoot- down to the one that China conducted recently..
Yes, because the media are clueless and don't take the time to investigate anything about details.
Do you have any knowledge or thoughts you can share?
Only what was on NASA TV. The diffeences are enormous.
The chinese satellite debris starting at 800 km will be in orbit for the next 20 to 100 years during which time all of that depris will pass through the orbits of thousands of other satellites as it slowly decays. These thousands of debris from the Chinese satellite, passing through the orbits of thousands of satellites will likely result in a few additional collisions that will in turn endanger additional satellites below them.
The Navy Shoot down is going to be at about 130 miles, below ALL other satellites and the ISS and the Shuttle. The majority of the debris will burn up within the next 2 orbits (6 hours or so).. But just to be sure, they are going to wait till after the shuttle lands, because the shuttle does have to fly through that altitude to get home.
Bob
So is the SM-3 going to smack it, blow up just below it, or smack it and then blow up?
Even though the satellite is "flying" in a nice, predictable straight line, it's still moving at 17K mph. The SM-3 doesn't have enough umph to put itself into anything but a sub-orbital shot. It will still be going ludicrous speed when it gets there. (Space Balls reference - sorry couldn't resist) Won't the impact throw parts into higher orbits, or is it still low enough to come back down very soon?
Tyler KM3G
----- Original Message ----- From: "Robert Bruninga" bruninga@usna.edu To: "'AMSAT-BB'" amsat-bb@amsat.org Sent: Thursday, February 14, 2008 2:48 PM Subject: [amsat-bb] Navy to shoot down satellite
NASA news conference is saying the Navy will try to shoot down the soon to deorbit spy satellite. Should be fun!
Bob, WB4APR
Sent via AMSAT-BB@amsat.org. 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
In case anyone was trying to find keps for USA-193, here is what Heavens Above has at:
http://www.heavens-above.com/orbitdisplay.asp?satid=29651&lat=45&lng...
1 29651U 06057A 08042.43405801 0.00185000 00000-0 27300-3 0 02 2 29651 58.5097 69.5541 0000897 125.0164 234.9836 16.04407073 09
Epoch (UTC): 10:25:03 AM, Monday, February 11, 2008 Eccentricity: 0.0000897 Inclination: 58.5097° Perigee Height: 261 km Apogee Height: 263 km Right Ascension of Ascending Node: 69.5541° Argument of Perigee: 125.0164° Revolutions per Day: 16.04407073 Mean Anomaly at Epoch: 234.9836° Orbit Number at Epoch: 0
I couldn't find anything for object 29651 at either Celestrak or Space-Track.org
Not sure how well these will work, since they are from Monday and would be expected to change considerably as the altitude decays.
73, Ken, W7KKE
I'm not sure if this is the correct object. If memory serves me correctly this satellite was to have been launched from Vandenburg AFB. THis object shows an inclination of 58.5097 degrees. There is no way this could've been launched from Vandenburg. Am I correct?
Jeff WB3JFS
----- Original Message ----- From: "Ken Swaggart" k.swaggart@charter.net To: "'AMSAT-BB'" amsat-bb@amsat.org Sent: Thursday, February 14, 2008 7:54 PM Subject: [amsat-bb] Falling satellite's keps (USA 193 object 29651)
In case anyone was trying to find keps for USA-193, here is what Heavens Above has at:
http://www.heavens-above.com/orbitdisplay.asp?satid=29651&lat=45&lng...
1 29651U 06057A 08042.43405801 0.00185000 00000-0 27300-3 0 02 2 29651 58.5097 69.5541 0000897 125.0164 234.9836 16.04407073 09
Epoch (UTC): 10:25:03 AM, Monday, February 11, 2008 Eccentricity: 0.0000897 Inclination: 58.5097° Perigee Height: 261 km Apogee Height: 263 km Right Ascension of Ascending Node: 69.5541° Argument of Perigee: 125.0164° Revolutions per Day: 16.04407073 Mean Anomaly at Epoch: 234.9836° Orbit Number at Epoch: 0
I couldn't find anything for object 29651 at either Celestrak or Space-Track.org
Not sure how well these will work, since they are from Monday and would be expected to change considerably as the altitude decays.
73, Ken, W7KKE
_______________________________________________ Sent via AMSAT-BB@amsat.org. 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
On Feb 14, 2008 7:06 PM, Tyler Harpster tyler881@comcast.net wrote:
So is the SM-3 going to smack it, blow up just below it, or smack it and then blow up?
Smack it, I guess. This is a kinetic energy weapon test...
The Standard Missile-3 is an exo-atmospheric "hit-to-kill" system.
Dave n0tgd
participants (7)
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Bruce Robertson -
Dave hartzell -
Jeff Yanko -
Ken Swaggart -
Ollie Eisman -
Robert Bruninga -
Tyler Harpster