The paper discusses a small satellite mission that was proposed to the European Space Agency (ESA) and to the German Space Agency (DARA). The idea is to support the Ulysses mission by conducting reference measurements in the ecliptic plane, particularly during the time periods of Ulysses\u27 polar passages. The scientific objectives, the instrumentation and the impact on the Ulysses mission are discussed. The mission scenario is described, the mission constraints are given, and a preliminary spacecraft concept is shown