As I said; outside the atmosphere it’s an asteroid. While falling through the atmosphere it’s a meteor.
I was taught to remember the Latin roots in a high school meteorology and astronomy class. Astro, astronomy, asteroid. In outer space. Meteor, meteorology, within the atmosphere. Meteorite, stalagmite, stalagtite, the "-ite" suffix is a geological reference, so it's on the ground.
Pretty basic linguistic distinctions, really. But people have somehow gotten the notion that the terms refer to size, including the erstwhile genius Michael Medved.
Oh well, it won't be the first time he's been wrong and certainly won't be the last. Pity he'll never know it.