Propulsion Problems Necessitate Lower Operations: HawkEye 360

HawkEye 360, with its constellation licensed to operate from 500 km to 615 km, asked the FCC Space Bureau to amend that operational altitude to 400 km-615 km, extending its operation capabilities as their orbits decay. In an application Monday, the company said its Cluster 4 satellites are operating at an orbital altitude of about 477 km due to propulsion system failures and increased solar activity.