Orbital Determination Observation of Space Debris and Near-Earth Objects

我们进行了仪器开发和观察。对于空间碎片观测，我们开发了一种新概念的斩波快门系统，通过该系统可以实现接近1角秒的位置精度观测。这些高精度观测首先显示了纳达尔观测估计的卫星位置与我们观测到的卫星位置之间的时间系统变化。为了找到这些差异的原因，我们必须继续进行卫星观测，然后我们可以将我们的系统应用于空间碎片观测。我们继续对近地小行星进行跟踪观测，在1997财政年度确定了320个位置，在3年内确定了500多个位置。所有的简化结果都在IAU通报中报告，并有助于改进每个小行星的轨道元素。我们没有自己的望远镜，时不时地向其他组要望远镜的时间。在这个有限的条件下，我们可以对未来完整系统的基本部件进行开发。我们发现，作为未来的一个项目，通过引入一种新的望远镜及其软件系统，有可能探测到更微弱（更小）的物体。

We have carried out instrument developments and observations.For Space Debris observations, we developed a chopping shutter system under a new concept, by which observations with a position accuracy near l arc second have been done. These high accuracy observations show firstly time systematic changes between satellite positions estimated by nadar observations and observed by us. To find causes of these differences we have to continue satellite observations, and then we can apply our system for space debris observations.We proceed follow up observations of near-earth asteroids, and made 320 position determinations in a fiscal year of 1997 and over 500 in 3 years. All the reduced results were reported in IAU Circulars, and contributed to refine orbital elements of each asteroids.We had no our own telescope and asked time to time telescope time from the other broups. Within this restricted condition, we could make developments of fundamental parts for future complete system. We found a possibility to detect fainter (smaller) objects by introducing a new telescope and its soft-ware system as a future project.