Satellite Altitude Lifetime 200 km 1 day 300 km 1 month 400 km 1 year 500 km 10 years 700 km 100 years 900 km 1000 years Their satellites are 550km, 1000k

Satellite Altitude Lifetime 200 km 1 day 300 km 1 month 400 km 1 year 500 km 10 years 700 km 100 years 900 km 1000 years Their satellites are 550km, 1000km, and higher.