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This paper discusses the transit model fitting and multiple-planet searchalgorithms and performance of the Kepler Science Data Processing Pipeline,developed by the Kepler Science Operations Center (SOC). Threshold CrossingEvents (TCEs), which are transit candidate events, are generated by theTransiting Planet Search (TPS) component of the pipeline and subsequentlyprocessed in the Data Validation (DV) component. The transit model is used inDV to fit TCEs in order to characterize planetary candidates and to deriveparameters that are used in various diagnostic tests to classify them. Afterthe signature associated with the TCE is removed from the light curve of thetarget star, the residual light curve goes through TPS again to search foradditional TCEs. The iterative process of transit model fitting andmultiple-planet search continues until no TCE is generated from the residuallight curve or an upper limit is reached. The transit model fitting andmultiple-planet search performance of the final release (9.3, January 2016) ofthe pipeline is demonstrated with the results of the processing of 4 years (17quarters) of flight data from the primary Kepler Mission. The transit modelfitting results are accessible from the NASA Exoplanet Archive. The finalversion of the SOC codebase is available through GitHub.

Kepler Data Validation II -- Transit Model Fitting and Multiple-Planet Search