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Hayabusa arrived Itokawa on 10:00 am, 12 Sep
(JST: Japanese Standard Time). Now Hayabusa hovers around
20 kilometers away from asteroid Itokawa.

This picture was taken at 8:35 am, 12 Sep (JST) just before
the settlementby the visible imager AMICA. Field of view is
two degrees.

The photo shows contrast of rocky and hilly region and smooth
area, which may suggest the origin of this asteroid. This feature
may be a key to consider Itokawafs origin and evolution.

The scientific observation will be conducted for about two
months including sampling and topographic measurement

 

 
 
 

Color composite image will be available soon.

 

The figure below shows the Doppler velocity difference between Itokawa
and Hayabusa. The velocity dropped down to zero around 01:17 UTC.
It indicates that Hayabusa fired its chemical propulsion thruster so that
the relative velocity was canceled. Vertically approaching speed is taken
in km/sec and is shown the doubled speed corresponding to a round trip
measurement. Horizontally is shown the Universal Time (World Time: UTC)
when the Doppler information was collected. Since radio travels for
about 17 minutes from Hayabusa, the last firing occurred around 01:17
UTC. The resulted relative velocity was confirmed down to about
0.25 mm/sec.