Space Station Will Make an Emergency Maneuver After Detection of Space Junk

a425couple <[email protected]> Wed, 10 Nov 2021 15:40:03 -0800
Newsgroups alt.astronomy,alt.books.arthur-clarke
Organization Newshosting.com - Highest quality at a great price! www.newshosting.com
Message-ID <[email protected]>
I found this interesting, and it gives nice
statistics and hisory:
https://gizmodo.com/space-station-will-make-an-emergency-maneuver-after-det-1848031344

Space Station Will Make an Emergency Maneuver After Detection of 
Threatening Space Junk
A fragment from a Chinese weather satellite will come to within 2,000 
feet of the ISS, prompting the orbital relocation.
ByGeorge Dvorsky
Today 12:30PM

The International Space Station as seen from Soyuz MS-18 spacecraft on 
28 September 2021.

An impromptu “space debris evasion maneuver” has been scheduled to 
prevent errant space junk from slamming into the International Space 
Station, in what is becoming an increasingly routine procedure.

Preliminary calculations suggest the space junk will come to within 
1,970 feet (600 meters) of the International Space Station on Thursday, 
November 11 at approximately 8:00 p.m. ET (Friday, November 12 at 4:00 
a.m. Moscow time), according to Russian space agency Roscosmos. That’s 
too close for comfort, requiring the ISS to be positioned farther away 
from the danger zone. The maneuver is scheduled for Wednesday at 3:15 
p.m. ET (11:15 p.m. Moscow time).

“The impact probability and risk to the International Space Station is 
very low,” a spokesperson from NASA explained in an email, adding that 
“the maneuver is a standard space station maneuver and does not require 
the crew to take any specific action.”

The sudden need to relocate the ISS is not expected to affect the launch 
of Crew-3, which blasts off later today from Kennedy Space Center in 
Florida, as NASA officials noted yesterday during the pre-flight news 
conference.

The offending chunk of junk is a remnant of the Fengyun-1C spacecraft. 
China deliberately destroyed its own weather satellite in January 2007 
as part of an anti-satellite missile test. The event prompted howls of 
outrage, as experts criticized China for contributing to the 
militarization of space and for deliberately producing a dangerous cloud 
of orbital debris. A fictional version of this event was portrayed in 
the 2013 film Gravity, in which a rapidly expanding cloud of debris, 
accidentally caused by Russia shooting down a defunct spy satellite, 
destroyed the ISS.

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To keep that story rooted in fiction, flight controllers plan to move 
the ISS by igniting the engines of Russia’s Soyuz MS-18 transport 
vehicle, currently docked to the station. The chosen impulse strength 
will move the space station at a rate of 2.3 feet per second (0.7 meters 
per second) for six minutes, according to Roscosmos. The maneuver will 
increase the space station’s altitude by 4,068 feet (1,240 meters), 
placing it in an operational orbit some 262 miles (421 km) above Earth.

The ISS has performed 29 avoidance maneuvers over the past 22 years, 
including three in 2020. The most recent happened on September 22, 2020, 
when space junk belonging to a Japanese rocket stage threatened to pass 
within 0.86 miles (1.39 kilometers) of the orbital outpost.

It’s an upward trend that’s likely to get worse over time, as satellites 
increasingly enter low Earth orbit and as the volume of orbital debris 
likewise increases—and as we continue to drag our collective feet and 
neglect to do anything meaningful, such as limiting the objects allowed 
in space or funding the development of satellites capable of cleaning up 
our orbital mess.

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