Discover and read the best of Twitter Threads about #ASAT

Most recents (10)

Live @ACScowcroft: GEN James Dickinson, #USSPACECOM Cdr: It is important to understand that in the space domain, our pacing challenge remains China. China has developed and fielded #ASAT weapons as a way to erode the superiority of our space systems...
Russia remains a persistent threat to our interests in space. Russia, like China, possesses sophisticated lasing and jamming capabilities, but most concerning is their development and testing of ground-based #ASAT weapons.
What’s unique in this UCP – and unique for the new
#USSPACECOM – is that our directives encompass more than just the traditional space supporting functions. #USSPACECOM has UCP-directed protect & defend responsibilities where we are supported by the other CCMDs & mission partners
Read 7 tweets
Lt Gen John Shaw, #USSPACECOM deputy cmdr, on @ascendspace's "Leveraging Our #Allies in National Security #Space" panel: It shows that all of our nations are continuing to focus more on more on #space & focusing on it together. #BetterTogether
Shaw recognizes work of @18SPCS & American/allied #space professionals at Combined Force Space Component Command & Joint Task Force-Space Defense for their work in relation to this week's Russian #ASAT test. 🛰️ @UKTeamVandenbe1 #VandenbergSFB @psgarrison #SchrieverSFB
Shaw says #USSPACECOM will continue to do its mission: do our best to understand what is going on in our domain (100km & up w no upper limit); make it transparent to all other users; share data w allies/partners/world; make it as safe as we can for further activity in #space.
Read 15 tweets
#USSPACECOM deputy cmdr, Lt Gen John Shaw at @ascendspace on Russian DA-ASAT test: We are still characterizing this event. We expect the debris will grow over time. #Perigee, #apogee event will widen. "It will become a threat that we will have to deal with." #ASAT #Russia
Shaw: This isnt' the beginning of such activity. #Russia conducted a similar test in April, though it didn't target a #satellite. Russia is showing "disregard of the sustainability of #space."
Shaw likens tracking objects in #space to book version of #JurassicPark: Scientists had automated sensors to track dinosaurs & algorithm to count the expected number of dinos. Problem is, it didn't account for the population of dinos rising. ...
Read 12 tweets
"...aware of a debris-generating event in outer space. We are actively working to characterize the debris field and will continue to ensure all space-faring nations have the information necessary to maneuver satellites if impacted," says @US_SpaceCom in a statement.
Earlier today, @Space_Station crew forced to take shelter in their spacecraft due to a "debris field" possibly intersecting with their orbit. This occurred amid reports #Russia had conducted an anti-satellite weapons test.
Read 13 tweets
A brief thread. It is now 2.5 months after the Indian #ASAT test. How much of the #spacedebris generated is still in orbit, how much is gone?
92 larger debris pieces from the test have been catalogued so far. Half of those are still orbiting today.
According to the Indian Government forecast at the time of the test, the last debris pieces should have reentered 45 days after the test, i.e. a month ago. The reality is different. 45 days after the test, barely 30% of the tracked larger debris had reentered.
As mentioned, currently (June 15) some 50% of the larger, tracked debris pieces is still on orbit. This ~50% is in line with the forecast in my analysis here:…
Read 5 tweets
In this thread, a summary of my OSINT analysis of a DRDO video of the Mar 27 Indian #ASAT test. I will show that the kill vehicle hit #Microsat-r in an upwards direction, not "head on" as the DRDO claims.
@ssc_nl @nktpnd @brianweeden @wslafoy @planet4589 @Genevaexpat
The Indian DRDO released a video documentary on #MissionShakti. Part of this video is imagery from an earth-based IR camera, that shows the missile hit and destroy Microsat-r:
The video gives us an accurate time of the intercept (5:42:15.5 UT), and from that a position, but interestingly enough the frames also contain missile telemetry (range, azimuth and elevation)! They cover the final 2.7 seconds of the missile trajectory.
Read 24 tweets
In case anyone doubts that low altitude #ASAT tests are a threat to higher orbiting satellites: here is a Gabbard Diagram I created for 173 larger debris fragments from Operation Burnt Frost, the US ASAT demo on USA 193 in 2008.
@SSC_NL @nktpnd @cosmos4u @brianweeden
The USA 193 intercept was at 247 km (compare 283 km for the Indian ASAT), yet a lot of the larger fragments ended up in eccentric orbits with apogee at much higher altitudes, well into the operational satellite range. 64% of the depicted sample had apogee above the ISS orbit.
Because they all have a rather low perigee, lifetimes on orbit of these fragments are limited, but some held on for several months, and occasionally up to almost two years:
Read 3 tweets
The ASAT test was long required and overdue. The technology was in place for quite some time. Needed political clearance which has now happened. Well done! 👍
The significance of the ASAT test can be gauged by the operation name, Mission Shakti. Same as our 1998 nuclear tests which was named Operation Shakti
Anyone asked for proof yet? #justasking.
Read 22 tweets
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