OBJECT B

OBJECT B (NORAD ID 62726) is a space object catalogued under China, launched on 2025-01-17 from Jiuquan Satellite Launch Center, China on the PRSC-EO1 launch. As a relatively recent addition to the catalogue, its orbital elements are well-characterised. Independent catalogue analysis identifies this object as PRSC-EO1, attributed to SUPARCO. It orbits in Low Earth Orbit (LEO) at altitudes between 495 km and 506 km with an inclination of 97.4°. It travels at approximately 27,419 km/h (7.62 km/s), completing one full orbit every 95 minutes — that’s roughly 15.22 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 ~3–10 years. Orbital Radar tracks OBJECT B in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

OBJECT B orbits at an average altitude of 501 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 B’s average altitude, there are currently 10,272 active payloads and 237 tracked debris or rocket body fragments — notable neighbours include STARLINK-1039, STARLINK-1047, STARLINK-1184. This makes it one of the more crowded altitude bands, containing roughly 54.9% of all active satellites. With an inclination of 97.4°, OBJECT B passes over latitudes between 97.4°N and 97.4°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. China operates approximately 1,275 active satellites in total, of which 194 share a similar altitude band with OBJECT B.