STEP 2

STEP 2 is an active satellite operated by USAF STP (United States), launched on 1994-05-19 from Vandenberg Space Force Base, United States on the STEP 2 launch. With over 32 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Low Earth Orbit (LEO) at altitudes between 538 km and 651 km with an inclination of 81.9°. It travels at approximately 27,233 km/h (7.56 km/s), completing one full orbit every 97 minutes — that’s roughly 14.91 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~3–10 years. Orbital Radar tracks STEP 2 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

STEP 2 orbits at an average altitude of 595 km in the core of Low Earth Orbit, the most heavily utilised altitude band. The balance of moderate drag (limiting debris accumulation) and short signal path (enabling low-latency links and high-resolution imaging) makes this regime the default for most commercial and government missions. Within ±50 km of STEP 2’s average altitude, there are currently 1,674 active payloads and 680 tracked debris or rocket body fragments — notable neighbours include ONEWEB-0050, STARLINK-3005, STARLINK-3090. This makes it one of the more crowded altitude bands, containing roughly 9% of all active satellites. With an inclination of 81.9°, STEP 2 passes over latitudes between 81.9°N and 81.9°S, providing near-global coverage including the polar regions. Polar and near-polar orbits are used for reconnaissance, weather monitoring and Earth-observation missions that need to image every part of the planet. United States operates approximately 13,204 active satellites in total, of which 1,077 share a similar altitude band with STEP 2.