It started as an asteroid and became a meteor when it entered the atmosphere.
But the article said "the meteor was first seen at an altitude of about 58 miles (93 kilometers) above rural Turkeytown... a small asteroid about 6 feet (1.8 meters) in diameter then broke apart about 18 miles (29 kilometers) above the town of Oak Grove."
It was a meteor at 58 miles high, then became an asteroid at 18 miles high.
-PJ