The GreenCube satellite, developed by S5LAB, has likely ceased functioning due to radiation damage. After a successful mission that exceeded expectations, the satellite is no longer responding to commands, and its onboard radio is believed to have been compromised by the harsh radiation environment in Medium Earth Orbit (MEO).
Approximately ten days ago, GreenCube experienced a reboot, and telemetry data from the event did not indicate any anomalies. However, the S5LAB team now suspects that the satellite’s radio was damaged, leading to the current communication blackout. MEO is notoriously challenging for satellites due to its high radiation levels, and GreenCube was not the only satellite affected. Several other CubeSats launched alongside it only lasted a few days, making GreenCube’s extended mission duration a remarkable achievement.
Despite ongoing efforts to send commands and reactivate the satellite, the team remains pessimistic about restoring GreenCube’s functionality. The satellite’s survival in the hostile MEO environment is seen as a testament to its robust design, but the likelihood of recovery is slim.
At this time, no successor to GreenCube is planned, primarily due to the infrequency of launch opportunities to MEO. Launches to this orbit are rare, which complicates the prospect of future missions.
In response to the satellite’s success and the interest it generated among radio amateurs, S5LAB has promised to host a webinar in collaboration with AMSAT Italia. The event will provide insights into the GreenCube mission, sharing the challenges and triumphs of the satellite’s journey. This is an opportunity for the amateur radio community to learn more about the satellite’s impact and the technical details behind its impressive mission.
While GreenCube’s operational life may have ended, its contributions to satellite technology and amateur radio will be remembered as a significant milestone.
[Information from Piero I0KPT via Facebooks Greencube Group]