NASA: Mystery object is 54-year-old rocket, not asteroid

Scientists have confirmed that a mysterious object temporarily orbiting Earth is a 54-year-old rocket, not an asteroid after all

CAPE CANAVERAL, Fla. -- A mysterious object temporarily orbiting Earth is a 54-year-old rocket, not an asteroid after all, astronomers confirmed Wednesday.

The object was classified as an asteroid after its discovery in September. But NASA’s top asteroid expert, Paul Chodas, quickly suspected it was the Centaur upper rocket stage from Surveyor 2, a failed 1966 moon-landing mission. Size estimates had put it in the range of the old Centaur, which was about 32 feet (10 meters) long and 10 feet (3 meters) in diameter.

“Today’s news was super gratifying!,” Chodas said via email. “It was teamwork that wrapped up this puzzle.”

The object formally known as 2020 SO entered a wide, lopsided orbit around Earth last month and, on Tuesday, made its closest approach at just over 31,000 miles (50,476 kilometers). It will depart the neighborhood in March, shooting back into its own orbit around the sun. Its next return: 2036.

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