OBJECT B

OBJECT B (NORAD ID 47700) is a space object catalogued under Unknown, launched on 2021-02-28 from Satish Dhawan Space Centre, India on the PSLV Rideshare 18 launch. Independent catalogue analysis identifies this object as PSLV-C51 PS4, attributed to ISRO / New Space India. It orbits in Low Earth Orbit (LEO) at altitudes between 416 km and 443 km with an inclination of 97.1°. It travels at approximately 27,561 km/h (7.66 km/s), completing one full orbit every 93 minutes — that’s roughly 15.46 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. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~1–3 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 430 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 6,627 active payloads and 121 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 35.4% of all active satellites. With an inclination of 97.1°, OBJECT B passes over latitudes between 97.1°N and 97.1°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.