In Palermo, on the island of Sicily, the director of the Giuseppe Piazzi Observatory, has for many years been observing the positions of the stars for the preparation of the star catalog. The work was coming to an end. On the first evening of the 19th century, January 1, 1801, Piazzi discovered a weak star in the constellation of Gemini, with a shine of about 7m, which for some reason was not in his own catalog or in the catalog of Christian Mayer, available to Piazzi. The next evening it turned...