On 3 December 2014, the French-German MASCOT asteroid lander was launched with its carrier probe Hayabusa2 from Tanegashima, an island about 40 kilometres south of the Japanese mainland. With MASCOT halfway to its destination, we look back on all that has happened since the launch.
At the beginning of 2015, MASCOT's spare flight unit, the so-called Flight Spare (FS), was refurbished and made ready. On Earth, this identical 'twin' of the asteroid lander serves as a reference system for the flight unit, the Flight Model (FM). The spare unit underwent the same qualification tests as the flight model and can also be used for advanced unit tests that were no longer possible for the FM due to scheduling constraints. These additional tests mainly focused on getting the best possible performance out of the system and on precisely calibrating the parameters required for the landing in October 2018. To achieve this, the scientific instruments on MASCOT performed a series of measurements. read more