Pieces Of Orbiting Space Junk Set For Very Close Pass


Pieces Of Orbiting Space Junk Set For Very Close Pass

Two pieces of old space junk may come within 25m of each other, according to a Silicon Valley start-up which uses radars to track objects in orbit.

LeoLabs has been monitoring the paths of a defunct Russian satellite and a discarded Chinese rocket segment.

It sees them converging over Antarctica at 00:56 GMT (01:56 BST) on Friday.

Other experts who’ve looked at the available data think Kosmos-2004 and the ChangZheng rocket stage will pass with a far greater separation.

With a combined mass at over 2.5 tonnes and relative velocity of 14.66km/s (32,800mph), any collision would be catastrophic and produce a shower of debris.

And given the altitude of almost 1,000km, the resulting fragments would stay around for an extremely long time, posing a threat to operational satellites.

Dr Moriba Jah, an astrodynamicist at the University of Texas at Austin, has worked out the miss distance to be about 70m.

And the Aerospace Corporation, a highly respected consultancy, comes to a similar conclusion.

With more and more satellites being launched, there’s certainly growing concern about the potential for collisions.

The big worry is the burgeoning population of redundant hardware in orbit – some 900,000 objects larger than 1cm by some counts – and all of it capable of doing immense damage to, or even destroying, an operational spacecraft in a high-velocity encounter.

This week, the European Space Agency released its annualĀ State of the Space Environment report.


It highlighted the ongoing problem of fragmentation events.

These include explosions in orbit caused by left-over energy – in fuel and batteries – aboard old spacecraft and rockets.

Person In Jetpack Spotted Flying Again Near LA Airport

On average over the last two decades, 12 accidental fragmentations have occurred in space every year – “and this trend is unfortunately increasing”, the agency said.

Also this week, at the online International Astronautical Congress, a group of experts listed what they regarded asĀ the 50 most concerning derelict objects in orbit.

A large proportion of them were old Russian, or Soviet-era, Zenit rocket stages.

Pieces Of Orbiting Space Junk Set For Very Close Pass


Please enter your comment!
Please enter your name here