How far up in space was the Sputnik satellite?

Sputnik 1, the first artificial satellite launched by the Soviet Union in 1957, orbited the Earth at an altitude of approximately 200 to 900 kilometers (about 124 to 560 miles). Its initial orbit was around 580 kilometers (about 360 miles) above Earth's surface. Sputnik completed an orbit roughly every 96 minutes, marking a significant milestone in space exploration.