Iranian Satellites Zafar, Paya and Kowsar Begin In-Orbit Testing Successfully

According to Iran’s Space Agency, all three satellites have completed a series of initial tests during their first week in orbit, with technical assessments confirming that subsystem evaluation and stabilization processes are progressing as scheduled.

The satellites have now entered the performance assessment phase, during which the operational status of their subsystems is being examined under real orbital conditions. Overall results so far have been described as satisfactory.

The agency noted that additional attention was given to the Paya satellite after an issue occurred during its orbital injection by the launch vehicle. Precise corrective actions were implemented to stabilize the satellite and ensure normal operation.

Paya has since successfully completed tests of its power generation and distribution systems, thermal control, telemetry and telecommand communications, positioning, stabilization, attitude control and pointing subsystems. Testing of its imaging communication system is currently underway.

Kowsar has also passed evaluations of its power supply and distribution, thermal management, telemetry and telecommand communications, as well as positioning and stabilization. It has now entered the stage of testing its attitude control and pointing systems.

Meanwhile, Zafar has completed its initial assessments related to power systems, thermal management, positioning, and telemetry and telecommand communications. Additional subsystem tests are ongoing, with the satellite’s rotational stability reported as appropriate.

Following the completion of the current testing phase, further evaluations will begin, focusing on attitude control and data transmission, storage and retransmission capabilities.

The Iran Space Agency emphasized that in-orbit satellite testing is a gradual, multi-week process conducted after launch, during which each subsystem is carefully evaluated in real operational conditions.

The agency added that, in line with existing plans, summaries of technical measures and test results will be released progressively to specialists and observers in the space sector.