BRO-1

BRO-1 is an active satellite operated by UnseenLabs (France), launched on 2019-08-19 from RLLC. It orbits in Low Earth Orbit (LEO) at altitudes between 290 km and 309 km with an inclination of 45.0°. It travels at approximately 27,829 km/h (7.73 km/s), completing one full orbit every 91 minutes — that’s roughly 15.91 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is weeks to months. Orbital Radar tracks BRO-1 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

BRO-1 orbits at an average altitude of 300 km in the lower reaches of Low Earth Orbit, where atmospheric drag is significant and orbital lifetimes are measured in months to a few years. This is the busiest corridor in space — home to crewed spacecraft, rapid-revisit imaging satellites and the densest part of the Starlink constellation. Within ±50 km of BRO-1’s average altitude, there are currently 376 active payloads and 13 tracked debris or rocket body fragments — notable neighbours include STARLINK-1067, STARLINK-1068, STARLINK-1171. With an inclination of 45.0°, BRO-1 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. France operates approximately 115 active satellites in total.