BSAT-4B

BSAT-4B is an active satellite operated by Broadcasting Satellite System Corp. (Japan), launched on 2020-08-15 from Guiana Space Centre, Kourou. It orbits in Geostationary Orbit (GEO) at altitudes between 35,770 km and 35,804 km with an inclination of 0.1°. It travels at approximately 11,070 km/h (3.07 km/s), completing one full orbit every ~24 hours (geosynchronous) — that’s roughly 1.00 orbits per day. At geostationary altitude, there is no meaningful atmospheric drag — this object will remain in orbit indefinitely unless actively deorbited. Orbital Radar tracks BSAT-4B in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

BSAT-4B occupies geostationary orbit at approximately 35,786 km above the equator, where its orbital period matches the Earth’s 24-hour rotation. From the ground, it appears to hover over a fixed point — ideal for broadcast television, weather monitoring and wideband communications. Within ±50 km of BSAT-4B’s average altitude, there are currently 713 active payloads and 59 tracked debris or rocket body fragments — notable neighbours include ASTRA 1N, GOES 16, TDRS 13. Japan operates approximately 189 active satellites in total, of which 26 share a similar altitude band with BSAT-4B.