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TESS Input Catalog Version 6 (TIC-6) Release Notes 2018-01-22

This delivery contains the sixth version of the TESS Input Catalog (TIC) produced entirely by the Target Selection Working Group (TSWG), and was finalized and prepared for delivery to the TESS Science Office (TSO) on 2017 December 22. The second version of the candidates target list (CTL-6.2) was prepared for delivery on 2018 March 12.

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The design is the same as TIC-5, in that the columns and their format are the same, but there have been significant changes compared to TIC deliveries prior to TIC-6. TIC IDs have not been changed and all future deliveries of the TIC will use the same IDs for specific objects. New objects added to the TIC will always receive new IDs. Objects may be removed from the TIC, if they are found to be spurious, but TIC IDs will always be unique and a new TIC object will never receive the ID of an old TIC object.

Changes compared to TIC-5

This delivery contains major changes in computed quantities compared to TIC-5. It should be noted that the methods used to estimate a variety of stellar parameters are still under active development and can be affected by poor catalog photometry when there is no acceptable alternative photometry for a given star. The major changes compared to previous versions are:

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