Earth orbit crossers.
Looking at the links for the article I was surprised that 10 meter size asteroids hit the atmosphere about once every decade. That's about the size of a decent size house. The links say that up to about 30-50 meters wide, these asteroids usually break up in the atmosphere.
The military detects such atmospheric detonations from satellites.
See this:
Observation of Meteoroid Impacts by Space-Based Sensors.
Mercury, November/December 1998 Table of Contents.
Edward Tagliaferri
http://www.astrosociety.org/pubs/mercury/9806/impact.html
Bob Clark