Don’t panic yet. The close-approach number is 0.000207 AU. An AU is 93,000,000 miles (average Earth to sun). Multiply the two and you get about 20,000 miles - same as been advertised...still darn close and still could hit with a slight change in course (or if their calcs are off).
You do get 47 miles if you use the Moon distance for AU (i.e., 231,000 miles), but that is not correct. If it got within 50 miles, the upper atmosphere would snatch it and blow it up - it would be vicious.
Whew, thanks for the clarification.
Brings to mind that the one we were watching wasn’t the one that exploded over Russia but came completely from another direction and totally unexpected and on the same day even. I’m just wondering what’s in the other hand?
The chart DOES say “LD”. Lunar distance.