"Too close for comfort... Two large, defunct objects in #LEO narrowly missed each other this morning — an SL-8 rocket body (16511) and Cosmos 2361 (25590) passed by one another at an altitude of 984 km," the company said.

The company said its radar tracking data helped to compute a miss distance of just 20 feet (6 meters), with a slight margin of error.

A triangular piece of orbital debris (a section of thermal insulation tile) high above the Planet Earth as seen from the Space Shuttle Columbia during mission STS-61-C, 12th to 18th of January, 1986.

"This region has significant debris-generating potential in #LEO due to a mix of breakup events and abandoned derelict objects," it tweeted, noting that the region is host to approximately 160 SL-8 rocket bodies deployed more than two decades ago.

Between June and September of last year, the company highlighted that there were 1,400 high-PC conjunctions involving the rocket bodies alone.

We've identified this kind of collision — between two massive derelict objects — as a ‘worst-case scenario’ because it's largely out of our control and would likely result in a ripple effect of dangerous collisional encounters," LeoLabs explained.