Hayabusa 2 is the follow-on mission to the Hayabusa mission as proposed by the Japanese space agency, JAXA. The goal for Hayabusa 2 is to build upon the legacy of the original mission, by strengthening the shown weak points. As of January 2011, the target is asteroid (162173) 1999 JU3 with a proposed launch in July 2014, with backup launch opportunities in December 2014, June and December 2015. Hayabusa 2 would then be expected to arrive to the target in 2018, survey the asteroid for a year and a half, depart in December 2019, and return to Earth in December 2020. The next mission will feature more durable ion engines, upgraded guidance and navigation technology, and new antennas and attitude control systems. Operations at the asteroid will be similar to those of the previous Hayabusa, but with an explosive device to dig the asteroid surface for fresh sample material.
Funding problems and international cooperation 
Hayabusa 2 was agreed by the Space Activities Commission, a board governing funding for the Japanese space program, during 2006 and was announced in a new year interview with JAXA president Keji Tachikawa.
In July 2009, at the 27th ISTS (International Symposium on Space Technology and Science) conference in Japan, presentations were given that elaborated upon the most recent Hayabusa 2 mission concept. Makoto Yoshikawa of JAXA presented a paper entitled "Hayabusa Follow-on Asteroid Sample Return Missions." Dr. Yoshikawa stated that JAXA has a new proposal for Hayabusa 2, namely that the mission have two spacecraft with one specifically being an impactor.
In August 2010, JAXA got the go-ahead from the Japanese government to begin development of Hayabusa 2. The estimated cost of the project is 16.4 billion yen.
NEC Corp. of Tokyo announced in January 2012 that it was beginning system design of the 1,300-pound spacecraft, its Ka-band communications system and an intermediate infrared camera. NEC was the builder of the Hayabusa probe.
The German Aerospace Center will build a small lander called MASCOT (Mobile Asteroid Surface Scout) for the mission in a cooperation with the French space agency CNES.
Small Carry-on Impactor (SCI) is a small drop off Explosively formed penetrator. It will be dropped off Hayabusa 2 the low gravity leaves the space craft enough time to maneuver on to the opposite side of the asteroid. A second instrument will be deployed the deployable camera (DCAM3). This camera will observe the explosion of the Small Carry-on Impactor instrument. The explosion will form a copper explosively formed penetrator hitting the asteroid with a velocity of 2 km/s. The crater created by the impact will be target for further observations by the onboard instruments.The shape charge will consist of 4.5 Kg of plasticized HMX and a 2.5 kg copper liner.
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