TechnologySpaceX Starlink satellites face Russia space debris 'squalls' in...

SpaceX Starlink satellites face Russia space debris ‘squalls’ in orbit: report

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rocket lifting off from launch pad with clouds billowing around

A Falcon 9 rocket carrying Starlink satellites blasted off on July 17, 2022.
(Image credit: SpaceX)

SpaceX’s Starlink constellation faced a Russian space debris “squall” on Aug. 6, according to a media report.

SpaceX satellites in the Starlink constellation came close to debris generated by a Russian anti-satellite test in November, Dan Oltrogge, chief scientist at COMSPOC, said at a Secure World Foundation event during the Small Satellite Conference Monday (Aug. 8). The story was first reported by SpaceNews (opens in new tab).

The company, which tracks space objects and generates reports for clients, said pieces of the now-destroyed Cosmos 1408 satellite are lining up with satellites launched in a sun-synchronous orbit, meaning an orbit that keeps the sun at a constant altitude relative to Earth.

Oltrogge, calling the close encounter Starlink event a “conjunction squall,” said his company spotted more than 6,000 close approaches affecting 841 satellites, representing about 30% of the constellation. (SpaceX has emphasized its Starlinks can maneuver, but did not comment on the story or whether any Starlinks were affected.)

Conjunctions by COMSPOC standards are defined as two objects being within 6 miles or 10 kilometers of each other. 

The new squall was in part generated by SpaceX launching a new set of satellites, termed Group 3, that are in a similar orbit to other sun-synchronous satellites that have come close to ASAT debris in the past. “It’s the very orbit that’s put at risk by the ASAT,” Oltrogge said.

SpaceX has already sent two satellite group members into orbit on July 10 and July 22, both from Vandenberg Space Force Base in California, SpaceNews said. A third clutch of satellites in this group is expected to launch Friday (Aug. 12).

Starlink has five orbital “shells” or layers, according to Teslarati (opens in new tab), with each one differing by orbital altitude along with orbital inclination, meaning the angle between the orbit and the Earth’s equator. Group 3 is said to be at an inclination of 97.6 degrees and at an altitude of 347 miles (560 km.)

SpaceX has not been immune to criticism about space debris concerns generated by itself, however. In August 2021, when Starlink was much smaller as a constellation, a leading European expert on space debris said the satellites were responsible for more than half of close encounters in orbit.

Follow Elizabeth Howell on Twitter @howellspace (opens in new tab). Follow us on Twitter @Spacedotcom (opens in new tab) or on Facebook (opens in new tab).

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Elizabeth Howell

Elizabeth Howell, Ph.D., is a staff writer in the spaceflight channel since 2022. She was contributing writer for Space.com (opens in new tab) for 10 years before that, since 2012. As a proud Trekkie and Canadian, she also tackles topics like diversity, science fiction, astronomy and gaming to help others explore the universe. Elizabeth’s on-site reporting includes two human spaceflight launches from Kazakhstan, three space shuttle missions in Florida, and embedded reporting from a simulated Mars mission in Utah. She holds a Ph.D. and M.Sc. in Space Studies from the University of North Dakota, and a Bachelor of Journalism from Canada’s Carleton University. Elizabeth is also a post-secondary instructor in communications and science since 2015. Her latest book, Leadership Moments from NASA, is co-written with astronaut Dave Williams. Elizabeth first got interested in space after watching the movie Apollo 13 in 1996, and still wants to be an astronaut someday.

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