The mission by the inter-orbit communication system outboard (ICS-EF)
attached to Kibo outboard experiment platform has been completed.
Then, on early 22 February 2020, it was discarded by ISS robot arm.
Since around September 2009, ICS-EF has provided the two-way communication
such as the data, images and voice as an inter-satellite communication
system connecting Kibo and Tsukuba Space Center through the Data Relay
Satellite (DRTS) Kodama. In August 2017, the operation of ICS-EF was
terminated with the completion of the operation of Kodama.
ICS-EF is predicted to gradually lower its orbit altitude in the future
and re-enter the atmosphere several years later. And we have confirmed
that it conform the international safety standards.
*1 ICS-EF: Inter-orbit Communication System Exposed Facility subsystem
*2 DRTS: Data Relay Test Satellite
ICS-EF = 45265 98067RJ