猛料:4周岁的中国地球观测卫星遥感一号爆炸(图)悲剧了

核心提示: 记录在案的头三个碎片显示了遥感1号的解体。通过“回溯”碎片,这起事件发生的大致时间是(2/4/10大约在6点49分星期日时间)。



猛料:4周岁的中国地球观测卫星遥感一号爆炸(图)悲剧了

The first three pieces of debris cataloged from the Yaogan 1 breakup are shown. The approximate time of the incident (2/4/10 at 6:49 UTC) was determined by “backtracking” the pieces. The fact that the debris and the remainder of the satellite do not exactly “match up” indicates errors associated with the orbital measurements.


Yaogan 1, a Chinese Earth Observation Satellite, erupted into multiple pieces last week. By back-tracking the pieces, I believe the date and time of the incident was February 4, 2010 at about 6:49 UTC. It is interesting to note that the maximum difference in orbital speeds is about 22 m/s. That can be compared with the hundreds of meters per second typical in a collision. Judging by past experience, a few more pieces of debris will be cataloged in the days to come. Yaogan 1 would have been four years old this April (launch date: 27 April 2006).


Just to be complete, there is no indication that this was anything other than an internal explosion. While the original satellite might appear in this particular view to be over China at the time of the incident, it is actually well over the Ocean.


记录在案的头三个碎片显示了遥感1号的解体。通过“回溯”碎片,这起事件发生的大致时间是(2/4/10大约在6点49分星期日时间)。碎片和卫星的其余部分并不完全“匹配”的事实,表明存在轨道测量方面的错误。


中国遥感1号地球观测卫星,于上周爆炸解体成多块碎片。通过追踪碎片的轨道,可以相信事件的发生日期和时间是UTC时间2010年2月4日(星期日),大约6点49分。这里值得注意的是,在轨道的(碎片)速度最大差值为22米/秒,这可与每秒数百米速度的典型碰撞进行比较。从以往经验看,一些更多的碎片将在今后几天内被发现(记录在案)。到今年4月份,遥感1号将运行4年整(发射日期:2006年4月27日)。


只要证据是完整的,那么没有迹象表明这是一个除内部爆炸以外的任何其他爆炸。在事件发生时,而且原来的卫星出现在这种特别现象可能是正在经过中国上空时发生的,它实际上是正在经过海洋上空。(在事件发生时,卫星正在经过中国上空,也许会呈现出这种特别现象——卫星解体成碎片,但是在经过海洋上空时确实能够看到卫星的解体碎片这个现象。)


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