Discover and read the best of Twitter Threads about #collisionavoidance
Most recents (3)
On Monday, for the first time, we performed a set of manoeuvres to avoid a high-risk collision w. #SpaceDebris created in the #Cosmos1408 anti-satellite test last year.
This was a difficult #CollisionAvoidance manoeuvre.👏👏to our #Sentinel1A Control Team & Space Debris Office
This was a difficult #CollisionAvoidance manoeuvre.👏👏to our #Sentinel1A Control Team & Space Debris Office
#CollisionAvoidance monitoring is unfortunately routine work at #MissionControl, and our teams are well-practiced in reacting to high-risk events.
This near head-on #collision was however unique; the situation evolved rapidly, was tricky to avoid, AND we had <24 hrs warning
This near head-on #collision was however unique; the situation evolved rapidly, was tricky to avoid, AND we had <24 hrs warning
Sentinal-1A, part of the @CopernicusEU Sentinel-1 radar observatory providing day-and-night images of Earth’s surface, had its orbit altered by 140 m in order to prevent collision with a debris fragment ~several cm in diameter
#CollisionAvoidance
#SpaceSwerve
#CollisionAvoidance
#SpaceSwerve
To date, more than 5800 launches have resulted in over 44,000 tracked objects in orbit, of which more than 20,000 remain in space and are regularly tracked by surveillance networks around the globe
#SpaceDebris🛰️
#SpaceDebris🛰️
~26% of catalogued objects are satellites, and only a small fraction of those - about 2000 - are still operating today
~17% of tracked objects are used upper stages of rockets and mission-related objects like launch adapters and lens covers
A drifting thermal blanket,📸1998
~17% of tracked objects are used upper stages of rockets and mission-related objects like launch adapters and lens covers
A drifting thermal blanket,📸1998
More than half of the #spacedebris population was generated by 500+ in-space break-ups. The two major fragmentation events are clearly visible as jumps in the graph:
2007: Chinese anti-satellite missile test
2009: Collision between Iridium 33 and Kosmos-2251 satellites
2007: Chinese anti-satellite missile test
2009: Collision between Iridium 33 and Kosmos-2251 satellites
For the first time ever, ESA has performed a 'collision avoidance manoeuvre' to protect one of its satellites from colliding with a 'mega constellation'
#SpaceTraffic
#SpaceTraffic
@esa This morning, @ESA's #Aeolus Earth observation satellite fired its thrusters, moving it off a collision course with a @SpaceX satellite in their #Starlink constellation
@esa @SpaceX @ESA_EO Experts in our #SpaceDebris team calculated the risk of collision between these two active satellites, determining the safest option for #Aeolus would be to increase its altitude and pass over the @SpaceX satellite
#CollisionAvoidance
#CollisionAvoidance
