Were two Iridium satellites hit by space junk?
Engineers are puzzling over the release of debris from two separate Iridium satellites last year, with each even suggesting the satellites were hit by very small pieces of space junk.
The U.S. Joint Space Operations Center detected 10 pieces of debris from the Iridium 47 satellite June 7, 2014. Some of the objects flew away from Iridium 47 at up to 80 meters per second — nearly 180 mph — into orbits almost 200 miles above the satellite, suggesting an explosion or collision triggered their creation. Another Iridium spacecraft — Iridium 91 — produced four debris fragments Nov. 30, according to U.S. military tracking data. “In contrast to the previous Iridium breakup, however, these pieces were produced with minimal delta velocity and remained in the vicinity to the parent spacecraft for some time,” NASA officials wrote.
In both cases, the satellites showed no signs of a breakup and remain operational, according to Iridium Communications, a Virginia-based company that uses a fleet of spacecraft nearly 500 miles above Earth for mobile voice and data services.
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Engineers are puzzling over the release of debris from two separate Iridium satellites last year, with each even suggesting the satellites were hit by very small pieces of space junk.
The U.S. Joint Space Operations Center detected 10 pieces of debris from the Iridium 47 satellite June 7, 2014. Some of the objects flew away from Iridium 47 at up to 80 meters per second — nearly 180 mph — into orbits almost 200 miles above the satellite, suggesting an explosion or collision triggered their creation. Another Iridium spacecraft — Iridium 91 — produced four debris fragments Nov. 30, according to U.S. military tracking data. “In contrast to the previous Iridium breakup, however, these pieces were produced with minimal delta velocity and remained in the vicinity to the parent spacecraft for some time,” NASA officials wrote.
In both cases, the satellites showed no signs of a breakup and remain operational, according to Iridium Communications, a Virginia-based company that uses a fleet of spacecraft nearly 500 miles above Earth for mobile voice and data services.
I must unfortunately ask you for your financial support because I do not depend on ads and rely entirely on the generosity of readers to keep Behind the Black running. You can either make a one time donation for whatever amount you wish, or you sign up for a monthly subscription ranging from $2 to $15 through Paypal or $3 to $50 through Patreon.
Your support will allow me to continue covering science and culture as I have for the past twenty years, independent and free from any outside influence.
Your support is even more essential to me because I not only keep this site free from advertisements, I do not use the corrupt social media companies like Google, Twitter, and Facebook to promote my work. I depend wholly on the direct support of my readers.
You can provide that support to Behind The Black with a contribution via Patreon or PayPal. To use Patreon, go to my website there and pick one of five monthly subscription amounts, or by making a one-time donation. For PayPal click one of the following buttons:
If Patreon or Paypal don't work for you, you can support Behind The Black directly by sending your donation by check, payable to Robert Zimmerman, to
Behind The Black
c/o Robert Zimmerman
P.O.Box 1262
Cortaro, AZ 85652
Or you can donate by using Zelle through your bank. You will need to give my name and email address (found at the bottom of the "About" page). The best part of this electronic option is that no fees will be deducted! What you donate will be what I receive.
I would think it rare that a satellite can lose appreciable portions and still operate. That two can do so says a lot about the redundancy of these.