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I report my discovery of the large-amplitude Algol-type eclipsing binarysystem which was initially added to the AAVSO International Variable Star Index(VSX) under the designation of Romanov V20. I describe selection criteria forsearching for variability among other stars, the search of photometric datafrom several sky surveys, and my observations using remote telescopes, and theanalysis of the data in the VStar software. I find the orbital period, eclipseduration, and magnitude range in Johnson B, V and Sloan g, r, i bands forprimary and secondary eclipses.

Discovery of Romanov V20, an Algol-Type Eclipsing Binary in the Constellation Centaurus, by Means of Data Mining