Copernicium is discovered by Sigurd Hofmann, Victor Ninov et al.

Copernicium is a synthetic chemical element; it has symbol Cn and atomic number 112. Its known isotopes are extremely radioactive, and have only been created in a laboratory. The most stable known isotope, copernicium-285, has a half-life of approximately 30 seconds. Copernicium was first created in February 1996 by the GSI Helmholtz Centre for Heavy Ion Research near Darmstadt, Germany. It was named after the astronomer Nicolaus Copernicus on his 537th anniversary.

Sigurd Hofmann was a German physicist known for his work on superheavy elements.

Victor Ninov is a Bulgarian physicist and former researcher who worked primarily in creating superheavy elements. He is known for the co-discoveries of elements 110, 111, and 112.

February 9 is the 40th day of the year in the Gregorian calendar; 325 days remain until the end of the year.