Guys, tell me I’m wrong about the minimum approach, 50 miles. I can’t find the margin of error for the approach calculations but YIKES!
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.