The kappa in E791 data for D→Kππ

A combined fit is made to E791 data on D→Kππ, LASS data on Kπ elastic scattering, and BES II data on J/Ψ→K∗(890)Kπ. In all cases, the Kπ S-wave is fitted well with a κ pole and K0(1430); the κ requires an s-dependent width with an Adler zero near threshold. The pole position of the κ is at M=(750−55+30)−i(342±60)MeV. The E791 Collaboration fitted their data using a form factor for the production process D→κπ. It is shown that this form factor is not needed. The data require point-like production with an RMS radius <0.38fm with 95% confidence.