外电报道,近日中国遥感一号卫星莫名爆炸。怀疑激光武器所为

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导读:外电报道:4周岁的中国地球观测卫星遥感一号卫星爆炸 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 o

外电报道:4周岁的中国地球观测卫星遥感一号卫星爆炸


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.


Comment

Will some of the debris fall down? Is there any type of fuel like hydrazine on this kind of satellite? Let’s hope that the possible fuel won’t become an excuse to shoot down the satellite. President Obama is going to meet His Holiness soon.


— 3.1415 · Feb 11, 01:33 PM ·


22 m/s (50 mph) also doesn’t sound like the ill-timed firing of a self-destruct charge. Likely a battery or some other moderately pressurized component burst. www.tiexue.com


— Allen Thomson · Feb 11, 02:19 PM ·


Pi-

The debris will fall down, but not anytime soon. The orbit is high enough that it will take some time for the pieces to decay. There’s no (unclass) word on what type of thrusters/propulsion are used, as far as i know.


Preliminary analysis points to a propulsion failure as the reason for the breakup. I note 3 newly catalog-able debris piece.


— MJS · Feb 11, 02:21 PM ·


This the first Chinese SAR satellite. The expect lifetime of the satellite is just 2-3 years. So, the satellite definitely retired.


— Wang Ting · Feb 11, 06:53 PM ·


I did a quick search on Chinese news websites. No hits on the story. Anyone else seen anything?


— Gregory Kulacki · Feb 16, 11:23 AM ·


Nothing that I see from China on this satellite. Maybe China will use it to test something before it falls down.


— 3.1415 · Feb 16, 10:43 PM ·


外电报道,近日中国遥感一号卫星莫名爆炸。怀疑激光武器所为


文章内容大致如下:


2月4日星期日大约6点49分时间,监测照片显示前三个碎片从遥感一号卫星解体。观察表明卫星碎片在太空以反轨道轨迹漂流。但事实上,碎片和卫星的其余部分不完全“匹配”,表明与轨道测量相关的错误。


中国地球观测卫星遥感一号上周突然爆炸成多件碎片。以卫星监测表明,碎片在轨道漂流最大速度为22米/秒,与上百米美妙的碰撞(导弹打卫星)相比,这个速度要下得多。从以往经验看,更多的碎片将在今后几天发现。


遥感一号卫星今年4岁了,是2006年4月27日发射升空的。


监测对比表明,卫星爆炸是属于卫星内部爆炸。而爆炸发生时,遥感一号刚经过海洋进入中国上空。



评论:

爆炸碎片会坠入地球吗?卫星上原来是否残留燃料?让我们祈祷可能残余的燃料不会变成中国打卫星的借口。要不奥巴马要很快去见他的议会了.

3.1415 · 2月11日,下午1时33


22米/秒,不像是有意破坏。应该是电池燃料部分的损毁解体。


— Allen Thomson · Feb 11, 02:19 PM


碎片会坠落,但是不会很快. 卫星碎片高度很高,会需要一段时间坠落. 据我所知,很可能是在变轨失败的情况下爆炸的。



— MJS · Feb 11, 02:21 PM


这是第一颗中国的人合成孔径雷达卫星。该卫星的预计寿命只有2-3年。因此,卫星肯定退役了。


— Wang Ting · Feb 11, 06:53 PM


我做了一些搜索,没发现什么新闻?你们看到了吗?


— Gregory Kulacki · Feb 16, 11:23 AM ·


我没有看到中国发表任何任何关于这个卫星的新闻. 可能中国是要在这卫星坠落之前测试什么武器吧。


— 3.1415 · Feb 16, 10:43 PM


外电报道,近日中国遥感一号卫星莫名爆炸。怀疑激光武器所为


如果是基于地基激光打卫星的测试。。那美国佬真会回去彻底反省反导计划了...

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