Oganesson is a synthetic chemical element with symbol Og and atomic number 118 also known as Element 118. It was first synthesized in 2002 at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia by a joint team of Russian and American scientists. The discovery was not announced immediately, but delayed pending confirmatory experiments. On 9 October 2006, researchers announced that they had indirectly detected a total of three (possibly four) nuclei of oganesson (one or two in 2002 and two more in 2005) and in December 2015, it was recognized as one of four new elements by the Joint Working Party of the international scientific bodies IUPAC and IUPAP. It was formally named on 28 November 2016.