Source please.

The NEO’s I can find in 2009 were all less than 10 metres wide. That would give us a Fireball and a big shock wave but no ELE.

My drunken apologies. It was 2002, spotted DAYS before it passed and On soberly reading, it was not extinction level, but would still ruin your haircut. Estimated up to 120m wide. The report I read last night claimed it was bigger than a football pitch. This one seems a bit more reliable….

http://neo.jpl.nasa.gov/news/news128.html

Here’s a short list of NEOs expected until June….
http://neo.jpl.nasa.gov/ca/

Nothing REALLY big or REALLY close spotted so far……
http://neo.jpl.nasa.gov/cgi-bin/neo_ca?type=NEO&hmax=14&sort=date&sdir=ASC&tlim=future&dmax=0.1AU&max_rows=0&action=Display+Table&show=1

These ones are all close (within 5 lunar distances) and around 670 m (H18)- 5km (H15.5)
http://neo.jpl.nasa.gov/cgi-bin/neo_ca?type=NEO&hmax=18&sort=date&sdir=ASC&tlim=future&dmax=5LD&max_rows=0&action=Display+Table&show=1