OV2-3

OV2-3 is an active satellite operated by USAF SSD (United States), launched on 1965-12-21 from Cape Canaveral Space Force Station, United States on the LES 4 launch. After more than 61 years in orbit, it is one of the longest-surviving objects in the space catalogue. It orbits in Medium Earth Orbit (MEO) at altitudes between 267 km and 14,635 km with an inclination of 26.6°. It travels at approximately 19,332 km/h (5.37 km/s), completing one full orbit every 4 hours 30 minutes — that’s roughly 5.34 orbits per day. Its orbital eccentricity of 0.5198 gives it a noticeably elliptical path, with significant altitude variation between perigee and apogee. Orbital Radar tracks OV2-3 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

OV2-3 orbits at an average altitude of 7,451 km in Medium Earth Orbit, the region between LEO and GEO (2,000–35,786 km). MEO’s higher altitude gives each satellite a much larger ground footprint than LEO, meaning fewer spacecraft are needed for global coverage — but signal latency is higher and radiation from the Van Allen belts is a significant design constraint. Within ±50 km of OV2-3’s average altitude, there are currently 3 active payloads and 14 tracked debris or rocket body fragments. This is a relatively sparse altitude band, containing less than 1% of all active satellites. With an inclination of 26.6°, OV2-3 passes over latitudes between 26.6°N and 26.6°S, covering the tropical and temperate zones where most of the world’s population resides. Low-to-mid inclination orbits are efficient to reach from equatorial and mid-latitude launch sites. United States operates approximately 13,204 active satellites in total.