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X(2), X(4), X(6), X(98), X(237), X(248), X(385), X(1687), X(1688), X(1976) 

K380 is the locus of pivots of pKs meeting the circumcircle at the same points as pK(X6, X385) = K128. These points are the Tarry point X(98) and two imaginary points on the Lemoines axis. Its pivot is the Tarry point and its isopivot is K. It is a member of the class CL043 : the tangents at the intersections with the circumcircle concur. It contains a large number of centers and the collinearities on the cubic are as follows : X2X4X237, X2X6X385, X2X98X1976, X4X98X248, X6X248X1976, X6X1687X1688. It has the same asymptotic directions as pK(X6, X325). Its isogonal transform is pK(X511, X2) = K357. 
