Meteor that streaked over Missouri weighed about 220 pounds

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LAS VEGAS, NV – JANUARY 11: The NASA logo is displayed at the agency’s booth during CES 2018 at the Las Vegas Convention Center on January 11, 2018 in Las Vegas, Nevada. CES, the world’s largest annual consumer technology trade show, runs through January 12 and features about 3,900 exhibitors showing off their latest products and services to more than 170,000 attendees. (Photo by Ethan Miller/Getty Images)

ST. LOUIS (AP) — NASA says a meteor seen streaking through the sky behind the Gateway Arch in St. Louis was a basketball-size hunk of rock that broke off from an asteroid belt between Mars and Jupiter.

The St. Louis Post-Dispatch reports that experts used hundreds of eyewitness accounts from as far away as South Dakota and Minnesota along with two videos to calculate information about the meteor.

They determined that the approximately 220-pound (98-killogram) rock traveled through the sky Monday night at 33,500 mph (53,910 kph), causing a sonic boom. A NASA weather satellite helped the agency confirm it was brighter than Venus in the sky, making it a fireball.

Bill Cooke, of the NASA Meteoroid Environments Office in Huntsville, Alabama, says it broke into pieces 12 miles (19.3 kilometers) above the ground.

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