OBJECT C

OBJECT C (NORAD ID 100653) is a space object catalogued under China, launched on 2026-09-10 from Jiuquan Satellite Launch Center, China on the YG53/YG56 launch. As a relatively recent addition to the catalogue, its orbital elements are well-characterised. It orbits in Low Earth Orbit (LEO) at altitudes between 513 km and 524 km with an inclination of 45.0°. It travels at approximately 27,383 km/h (7.61 km/s), completing one full orbit every 95 minutes — that’s roughly 15.16 orbits per day. 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 C in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

OBJECT C orbits at an average altitude of 519 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 OBJECT C’s average altitude, there are currently 5,750 active payloads and 285 tracked debris or rocket body fragments — notable neighbours include STARLINK-1184, STARLINK-1276, STARLINK-1451. This makes it one of the more crowded altitude bands, containing roughly 30.8% of all active satellites. With an inclination of 45.0°, OBJECT C passes over latitudes between 45.0°N and 45.0°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. China operates approximately 1,275 active satellites in total, of which 216 share a similar altitude band with OBJECT C.