1920.] 
Gifford.—The Origin of New Stars. 
45 
The point A is the vertex, and therefore the position of nearest 
approach. 
r 0 = AS = a (e — 1); 
(e _ l) _ it _= it. 
{ 1 2(& — K) K' 
, 2 (k — K) 
e — 1 — - ^ - “ 5 
Fig 6. 
