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Asteroid "Itokawa", Target of "HAYABUSA", Comes in Sight

Section of image plot showing Asteorid 25143 Itokawa taken by Kiso Observatory, at University of Tokyo
Tokyo - Jan 07, 2004
The asteroid "Itokawa", target of the asteroid explorer "HAYABUSA" launched in May 2003, comes in sight in over two years since August 2001. Until now, we have been unable to observe the asteroid because it has been too dark, under twentieth-magnitude, and located not so far from the Sun when looking it from earth.

From December 1 to 4, 2003, four members, Abe, Nishihara, Kitazato, and Sarugaku, observed the asteroid using the 105 cm Schmidt telescope at the Kiso Observatory, University of Tokyo. The photo was taken with 900 sec exposure from 5:18:09 p.m. (UT) on December 3, 2003. The point in circle is Itokawa.

The brightness at that time was about twentieth-magnitude. The distance between Itokawa and earth was about 0.77AU (about 115 million km, 1AU is about 150 million km). The distance between Itokawa and the Sun was about 1.52AU (228 million km). Width of the photo is 8 arc minutes. Upper is north and right is east (using 2KCCD camera with R band filter and magnitude is R band).

Itokawa will gradually close to earth and, on June 26, 2004, it will be closest to earth with distance of 0.013AU (about 1.95 million km). But, unfortunately, it will be then located at the south hemisphere. It is estimated that the asteroid will become about twelfth magnitude (about 1,500 times brighter compared to the present).

The ion engines of "HAYABUSA" are now operating in perfect condition, and the explorer is flying smoothly.

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Japan's MV Returns To Service With Muses-C Launch
Tokyo - Jun 18, 2003
The M-V-5 rocket carrying MUSES-C (Mu Space Engineering Spacecraft-3) lifted off successfully from Kagoshima Space Center (KSC) at 13:29:15 on May 9, 2003. The lift off was smooth and 350sec after launch the rocket released the 4th stage, which spun into the specified direction. NASA's Goldstone station received radio signals from MUSES-C 23 minutes later.

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