OBJECT N

OBJECT N (NORAD ID 44891) is a space object catalogued under Unknown, launched on 2019-12-20 from Taiyuan Satellite Launch Center, China on the CBERS-4A launch. Independent catalogue analysis identifies this object as CZ-4B sep motor cover, attributed to CNSA. It orbits in Low Earth Orbit (LEO) at altitudes between 444 km and 452 km with an inclination of 98.1°. It travels at approximately 27,524 km/h (7.65 km/s), completing one full orbit every 94 minutes — that’s roughly 15.39 orbits per day. Its near-polar, sun-synchronous orbit means it passes over any given point on Earth at approximately the same local solar time, ideal for consistent Earth observation lighting conditions. Its near-circular orbit (eccentricity close to zero) means it maintains a very consistent altitude throughout each revolution. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~1–3 years. Orbital Radar tracks OBJECT N in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

OBJECT N orbits at an average altitude of 448 km in a sun-synchronous orbit (SSO), a specialised subset of LEO where the orbital plane precesses to maintain a constant angle relative to the Sun. This provides consistent lighting conditions on every pass — essential for Earth observation, weather monitoring and environmental science. Within ±50 km of OBJECT N’s average altitude, there are currently 10,024 active payloads and 144 tracked debris or rocket body fragments — notable neighbours include ISS (ZARYA), STARLINK-1017, STARLINK-1039. This makes it one of the more crowded altitude bands, containing roughly 53.6% of all active satellites. With an inclination of 98.1°, OBJECT N passes over latitudes between 98.1°N and 98.1°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.