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Hayabusa 2 Arrives at Ryugu

Hayabusa 2 Arrives at Ryugu. Asteroid Arrival!. Next Slide. Hayabusa 2 Arrives at Ryugu. Mission Facts: Launch—December 3, 2014 Mission type—asteroid sample return Operator—JAXA (Japan Aerospace Exploration Agency) Mission dates: Arrival at asteroid Ryugu—June 27, 2018

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Hayabusa 2 Arrives at Ryugu

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  1. Hayabusa 2 Arrives at Ryugu Asteroid Arrival! Next Slide

  2. Hayabusa 2 Arrives at Ryugu • Mission Facts: • Launch—December 3, 2014 • Mission type—asteroid sample return • Operator—JAXA (Japan Aerospace Exploration Agency) • Mission dates: • Arrival at asteroid Ryugu—June 27, 2018 • Depart asteroid–December 2019 • Return samples collected to Earth—December 2020 Next Slide

  3. Hayabusa 2 Arrives at Ryugu • A near-Earth asteroid • It measures approximately 1 kilometer (0.6 mile) in diameter • Discovered on May 10, 1999 by astronomers near Socorro, New Mexico • It’s name refers to Ryūgū, an undersea dragon’s palace visited by Urashima Taro, a fisherman in a Japanese folk story who brings back a mysterious treasure box from the underwater castle, much like the Hayabusa 2 returning with samples Asteroid Ryugu Photo of Ryugu taken from a distance of 40 km by Hayabusa 2’s Optical Navigation Camera Next Slide

  4. Hayabusa 2 Arrives at Ryugu • Scientific Instruments: • Remote Sensing • Optical Navigation Camera (ONC) • Near-Infrared Camera (NIR), • Thermal Infrared Camera (TIR) • Light Detection and Ranging (LIDAR) • Sampling • Sampling Device (SMP) • Small Carry-On Impactor (SCI) • Deployable Camera (DCAM) • Lander/Rover • Mobile Asteroid Surface Scout (MASCOT) • Minerva-II (Rover 1A, Rover 1B, Rover 2) More Info Remote Sensing More Info Sampling More Info Lander/Rover Next Slide

  5. Hayabusa 2 Arrives at Ryugu Landing site for MASCOT lander on Ryugu is shown in blue circle. Picked from 10 possible candidates, it is located in the southern hemisphere of the 3,117-foot (950-meter) diameter asteroid. MASCOT is due to touch down on October 3, 2018. Next Slide

  6. Hayabusa 2 Arrives at Ryugu End of Show Return to Slide 1

  7. Hayabusa 2 Arrives at Ryugu

  8. Hayabusa 2 Arrives at Ryugu • Remote Sensing: • Optical Navigation Camera (ONC)—spacecraft navigation during asteroid approach and to image the surface of the asteroid • Near-Infrared Camera (NIR)—mineral composition of the asteroid surface • Thermal Infrared Camera (TIR)—determine surface temperature of asteroid • Light Detection and Ranging (LIDAR)—measure distance from spacecraft to the asteroid • LIDAR and ONC—determine the detailed topography of the asteroid and measure the asteroid’s gravitational field ONC-T, ONC-W1 NIR TIR LIDAR Return

  9. Hayabusa 2 Arrives at Ryugu • Sampling: • The spacecraft will approach the surface of the • asteroid with a sampler horn; a projectile (5-gram • tantalum bullet) will be fired at 300 meters per • second into the surface; the resulting ejecta particles • are collected by a catcher at the top of the horn • An additional sample will be taken of material • deeper into the surface which has not been • subjected to space weathering; this will be done with • the Small Carry-On Impactor (SCI) to gather a larger sample. • Following SCI deployment, Hayabusa 2 will move to the far side of the asteroid in order to avoid debris from the explosion • Deployable Camera (DCAM) will be left behind on the surface to observe the explosion SCI More Info SCI Return

  10. Hayabusa 2 Arrives at Ryugu • Small Carry-on Impactor (SCI): • An additional sample will be taken of material deeper into the surface, which has not been subjected to space weathering. This requires removing a larger volume of surface material with a more substantial impactor • For this purpose, Hayabusa 2 will deploy the Small Carry-on Impactor (SCI), an explosively formed penetrator consisting of a 2.5 kg (5.5 lb) copper projectile contained in a 4.5 kg (9.9 lb) shaped charge of plasticized HMX (a nitroamine high explosive) • SCI will separate from Hayabusa 2 at an altitude of about 500 meters and descend toward the asteroid under gravity,since it has no thrusters • Following SCI deployment, Hayabusa 2 will maneuver to the far side of the asteroid, in order to avoid debris from the explosion • Hayabusa 2 will leave behind a deployable camera (DCAM) to • observe the explosion of SCI • Approximately 40 minutes after separation, SCI will explode and • drive the copper impactor onto the asteroid. Hayabusa 2 will wait • about two weeks for the debris to clear from the impact site, • before descending into the newly-formed crater to retrieve samples Return

  11. Hayabusa 2 Arrives at Ryugu • Lander/Rover: • Four small rovers carried by Hayabusa 2 to investigate the asteroid surface; they will be deployed at an altitude of 60 meters and fall freely to the surface under the asteroid’s weak gravity • MINERVA-II is a container that will deploy two • rovers ROVER-1A and ROVER-1B in addition to • ROVER-2 • ROVER-1A and ROVER-1B will move by • tumbling and ROVER-2 will move by hopping; they will • each have cameras and a thermometer • MASCOT (Mobile Asteroid Surface Scout) will carry an • infrared spectrometer, a magnetometer, a radiometer, • and a camera; it will move by tumbling; it will investigate • the surface structure and mineralogical composition, the thermal behavior • and the magnetic properties of the asteroid. MINERVA-II with rovers MASCOT Return

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