When was the the ship launched ,that along with the Tripitz and the Lützow was a target for  Operation Source ?
German battleship Scharnhorst Scharnhorst was a German capital ship, alternatively described as a battleship and battlecruiser, of Nazi Germany's "Kriegsmarine". She was the lead ship of her class, which included one other ship, "Gneisenau" . The ship was built at the "Kriegsmarinewerft" dockyard in Wilhelmshaven; she was laid down on 15 June 1935 and launched a year and four months later on 3 October 1936. Completed in January 1939, the ship was armed with a main battery of nine 28 cm (11 in) C/34 guns in three triple turrets. Plans to replace these weapons with six 38 cm (15 in) SK C/34 guns in twin turrets were never carried out.
Operation Star Operation Star or Operation Zvesda (Russian: Звезда , 'Star' ) was a Red Army offensive on the Eastern Front of World War II begun on 2 February 1943. The attack was the responsibility of the Voronezh Front under the command of Filipp Golikov. Its main objectives were the cities of Kharkov and Kursk. While initially successful in capturing both cities, the Soviets overextended themselves, allowing German Field Marshal Erich von Manstein to launch a counteroffensive and inflict a defeat on the Soviets in the Third Battle of Kharkov.