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We calculated the $1s$ level shifts and widths of kaonic deuterium,corresponding to accurate results on near-threshold antikaon - deuteronscattering. The Lippmann-Schwinger eigenvalue equation with a strong $K^- - d$and Coulomb potentials was solved. The two-body $K^- - d$ potentials reproducethe near-threshold elastic amplitudes of $K^- d$ scattering obtained from thethree-body Alt-Grassberger-Sandhas equations with the coupled channels usingfour versions of the $\bar{K}N - \pi \Sigma$ potentials. Both new $\bar{K}N -\pi \Sigma$ potentials reproducing the very recent SIDDHARTA data on kaonichydrogen and our older potentials reproducing KEK data have one- or two-poleversions of the $\Lambda(1405)$ resonance and reproduce experimental data on$K^- p$ scattering.

Near-threshold $K^- d$ scattering and properties of kaonic deuterium