On 12/17/2012 6:04 PM, Spehro Pefhany wrote:
oblate spheroid

You are kidding, right?

Mean radius 6,371.0 km[6]

Equatorial radius 6,378.1 km[7][8]
Polar radius 6,356.8 km[9]

I'm seeing that as 22 km of "oblative flattening".

You'd have to mike it to tell the difference.

(BIG micrometer)