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from the things-getting-untidy-up-there dept.
Space collision: Chinese satellite got whacked by hunk of Russian rocket in March:
In March, the U.S. Space Force's 18th Space Control Squadron (18SPCS) reported the breakup of Yunhai 1-02, a Chinese military satellite that launched in September 2019. It was unclear at the time whether the spacecraft had suffered some sort of failure — an explosion in its propulsion system, perhaps — or if it had collided with something in orbit.
We now know that the latter explanation is correct, thanks to some sleuthing by astrophysicist and satellite tracker Jonathan McDowell, who's based at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts.
On Saturday (Aug. 14), McDowell spotted an update in the Space-Track.org catalog, which the 18SPCS makes available to registered users. The update included "a note for object 48078, 1996-051Q: 'Collided with satellite.' This is a new kind of comment entry — haven't seen such a comment for any other satellites before," McDowell tweeted on Saturday.
He dove into the tracking data to learn more. McDowell found that Object 48078 is a small piece of space junk — likely a piece of debris between 4 inches and 20 inches wide (10 to 50 centimeters) — from the Zenit-2 rocket that launched Russia's Tselina-2 spy satellite in September 1996. Eight pieces of debris originating from that rocket have been tracked over the years, he said, but Object 48078 has just a single set of orbital data, which was collected in March of this year.
"I conclude that they probably only spotted it in the data after it collided with something, and that's why there's only one set of orbital data. So the collision probably happened shortly after the epoch of the orbit. What did it hit?" McDowell wrote in another Saturday tweet.
Yunhai 1-02, which broke up on March 18, was "the obvious candidate," he added — and the data showed that it was indeed the victim. Yunhai 1-02 and Object 48078 passed within 0.6 miles (1 kilometer) of each other — within the margin of error of the tracking system — at 3:41 a.m. EDT (0741 GMT) on March 18, "exactly when 18SPCS reports Yunhai broke up," McDowell wrote in another tweet.
Thirty-seven debris objects spawned by the smashup have been detected to date, and there are likely others that remain untracked, he added.
Despite the damage, Yunhai 1-02 apparently survived the violent encounter, which occurred at an altitude of 485 miles (780 kilometers). Amateur radio trackers have continued to detect signals from the satellite, McDowell said, though it's unclear if Yunhai 1-02 can still do the job it was built to perform (whatever that may be).
(Score: 1) by Acabatag on Wednesday August 18 2021, @04:44PM (8 children)
It's probably ok, because the only reason to go up past the debris band/barrier was to live the rest of your life confined in a Winnebago-sized pod that you could seldom if ever leave. Experience shows that it's okay to live that way in mom's basement for a time, but not for a lifetime.
If we're stuck living here as a part of this biome (duh) maybe it will force us to manage things better and not just spew funes trying to get off this sphere.
(Score: 2) by FatPhil on Wednesday August 18 2021, @08:28PM (1 child)
OK, got it.
So we're never going to want to launch the JWST?
Or put anything in geostationary orbit.
Or launch any more GPS satellites.
Or any comms satellites.
Or revisit the moon.
Or send any more probes to Mars.
Or anywhere else in the solar system.
Wait - I bloody well hope you're not in charge of NASA, as you seem to be ruining absolutely everything. There's more to space than just building the B Ark.
Great minds discuss ideas; average minds discuss events; small minds discuss people; the smallest discuss themselves
(Score: 1) by Acabatag on Wednesday August 18 2021, @09:54PM
I'm not ruining everything. Just observing trends where everything is being ruined. And pointing a bright flashlight at the illusion some people have of what 'living in space' would amount to.
The B ark, though, is really important. There are almost no public phones now in existence anywhere. Do you want those unemployed people running around in the way in the streets?
(Score: 0, Redundant) by khallow on Thursday August 19 2021, @12:02AM (4 children)
You're already confined to a much smaller meat bag for the rest of your life. And you never leave that. Not that big a deal.
(Score: 1) by Acabatag on Thursday August 19 2021, @01:10AM (1 child)
Huh? Are you stuck in an Iron Lung or something? I can go outdoors anytime I want. Right now it's dark here though.
(Score: 0, Offtopic) by khallow on Thursday August 19 2021, @02:28AM
And in that space Winnebago you'd be in more outdoors than you could possibly imagine.
(Score: 0) by Anonymous Coward on Thursday August 19 2021, @01:33AM (1 child)
Confined? I should hope so, as if the bag was opened up the meatjuice would leak and the charges would return to ground state.
(Score: 1) by khallow on Thursday August 19 2021, @02:50AM
The space Winnebago serves a very similar role. All your stuff, including that breathable air, stays put.
(Score: 1) by khallow on Thursday August 19 2021, @02:51AM