  Systematic analysis of 8B Coulomb dissociation with the Asymptotic
Normalization Coefficient (ANC) method is proposed to determine the
astrophysical factor S17 accurately. An important advantage of the analysis is
that uncertainties of the extracted S17 coming from the use of the ANC method
can quantitatively be evaluated, in contrast to previous analyses using the
Virtual Photon Theory (VPT). Calculation of measured spectra in dissociation
experiments is done by means of the method of Continuum-Discretized
Coupled-Channels (CDCC). From the analysis of 58Ni(8B,7Be+p)58Ni at 25.8 MeV,
S17=22.83 +/- 0.51(theo) +/- 2.28(expt) (eVb) is obtained; the ANC method
turned out to work in this case within 1% of error. Preceding systematic
analysis of experimental data at intermediate energies, we propose hybrid (HY)
Coupled-Channels (CC) calculation of 8B Coulomb dissociation, which makes
numerical calculation much simple, retaining its accuracy. The validity of the
HY calculation is tested for 58Ni(8B,7Be+p)58Ni at 240 MeV. The ANC method
combined with the HY CC calculation is shown to be a powerful technique to
obtain a reliable S17.
