On December 3, the H2A rocket carrying the asteroid explorer Haybusa-2 was successfully blasted off from Tanegasima Space Center at 1:22 p.m. The mission of the Hayabusa-2 is collect and return with the sample of rocks containing water and organic substances from a asteroid named 1999JU3, that has been orbiting between Earth and Mars for six years. The samples are expected to give the clue of the origin of the solar system and life itself. After liftoff, the rocket accelerated and entered a single orbit of earth and detached Hayabusa-2 . Then the probe  Hayabusa-2 stared to travel on its own by its own solar panels. The probe journey is scheduled to land on the target asteroid about 3.5 years from now, and return to Earth at the end of 2020. The journey would be 5.2 billion km. According to Mitubish Heavy Industries Ltd. which is in charge of the launch, the window for  liftoff is decided on a specific time scale since Earth and the asteroid  revolve  around the sun on different orbits.  When a rocket heads for a celestial object at a distance ,small deviations in a angle and positioning can result in significant mistake, so there's only one narrow launch window a day. Many Japanese saw the rocket off,  hoping to see the probe again at the end of the year when the Tokyo Olympic games would be over.
hayabusa-2 hayabusa-rocket
orbitThese  3 images are from the internet.