Itokawa Samples. The JAXA Hayabusa spacecraft collected samples by touching down on the 500-meter long asteroid Itokawa . . Itokawa particles (largest was 300 m) were collected using
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The JAXAHayabusa spacecraft collected samples by touching down on the 500-meter long asteroid Itokawa.
Itokawa particles (largest was 300 m) were collected using
(A) an electrostatic needle, (B) a Teflon spatula, and (C) by thumping the container and collecting grains on a pure-silica glass slide.
Compositions of olivine (Fa) and pyroxene (Fs) in dust grains from Itokawa plot in the middle of the field defined by LL ordinary chondrites. Most are highly equilibrated, and also plot in the LL field.
Identification as LL chondrite shows that S-asteroids, such as Itokawa, are composed of ordinary chondritic material, not differentiated rock.