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This study aims to assess the properties and classification of 40 variablestars in Sagittarius, little studied since their discovery and reported in theInformation Bulletin on Variable Stars (IBVS) 985 and update. Using data fromprevious studies and several astronomical databases, we performed our analysismainly utilizing a period analysis software and comparing the photometriccharacteristics of the variables in a Colour-Absolute Magnitude Diagram. Forall stars, the variability is confirmed. We discovered new significant resultsfor the period and/or type of 15 variables and highlighted incorrectcross-reference names on astronomical databases for 5 stars. This assessmentalso identifies 9 cases for which results from the ASAS-SN Catalog of VariableStars are systematically not consistent with the original light curves. Acorrect identification of NSV 10522 is provided.

Review of the Classification and Properties of 40 Variable Stars in Sagittarius