## Ray's Asymmetry Parameter

Ray's asymmetry parameter is defined as (A, B, C are the rotational constants; A >= B >= C):

= (2B - A - C)/(A - C)

For the following equation holds:

(prolate case) -1 =< =< +1 (oblate case)

Last update July, 12^{th} 2007 by A. Gelessus