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SES -band photometry for classical Cepheids in the keystone galaxy NGC4258 yield discrepant absolute magnitudes. Specifically, the 2016 and 2022 published SES Cepheid data for NGC4258 exhibit a substantial offset of . That adds to a suite of existing concerns associated with the SES analysis, which in sum imply that their relatively non-changing Hubble constant for nearly twenty years warrants scrutiny.

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