JAXA's NEO related work

SMPAG

ESOC, Darmstadt 6 February 2014

Makoto Yoshikawa (JAXA) Japan's Contribution to n mission ? Explored a small S-type NEO (25143) Itokawa

? Will explore a small C-type NEO (162173) 1999 JU3 n Observation  Bisei Spaceguard Center Observations of and (for asteroids, follow-up observation mainly) by Japan Spaceguard Association (JSGA)  Other telescopes (such as Subaru, etc) 2 Hayabusa and Hayabusa2

JAXA developed the technology for asteroid sample return

 Ion engine  Autonomous navigation  Sample collection system  Reentry capsule

Impactor system * We study of the origin and evolution of the solar system

Molecular cloud Proto solar system disk Solar system

Evolution of planets Minerals, H2O *, Organic matters * (*Hayabusa2)

February 6, 2014 SMPAG 3 Mission Scenario of Hayabusa

Observations, sampling

Earth Swingby Launch 19 May 2004 9 May 2003 Asteroid Arrival 12 Sept. 2005

Earth Return Serious 13 June 2010 troubles

February 6, 2014 SMPAG 4 Mission Scenario of Hayabusa2

June 2018 : Arrival at 1999 JU3 Launch The observes the asteroid, 2014 releases the small rovers and the lander, and executes multiple samplings.

The spacecraft carries Sample analysis an impactor. New Experiment Earth Return Dec. 2020

Dec. 2019 : Departure

The impactor collides with 2019 the surface of the asteroid.

Samples will be obtained from the newly created crater.

February 6, 2014 SMPAG 5 Target Asteroids NEO Hayabusa : (25143) Itokawa 530 m Hayabusa2 : (162173) 1999 JU3

S-type

Orbit Itokawa 900 m

Mars

Earth

C-type

February 6, 2014 SMPAG 6 Images of Itokawa

Eastern Side Head

Bottom Western Side

7 February 6, 2014 SMPAG 7 Scientific Results Itokawa 1999 JU3

?

Pyroxene Olivine Pyroxene and Olivine These results  Mass will be useful  Shape => volume for Density  spaceguard

February 6, 2014 SMPAG 8