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斯普特尼克2号

Sputnik 2
所属组织苏联
主制造商中央设计局
任务类型地球科学
环绕对象地球
绕轨圈数~2,000
发射时间1957年11月3日 02:30:00 世界协调时
发射手段r-7火箭
任务时长162天
轨道衰减1958年4月14日
COSPAR ID1957-002A
SATCAT no.00003在维基数据编辑
官方网站NASA
质量508.3千克(1,120 磅)
轨道参数
半长轴7,314.2 公里 (4,545 英里)
离心率.098921
倾角65.33°
远拱点1,660 公里 (1,031 英里)
近拱点212 公里 (132 英里)
周期103.7 分钟

斯普特尼克2号(俄语:Спутник-2)是苏联斯普特尼克计划之中发射的第二颗人造卫星,也是第二枚进入地球轨道的人造卫星。它于1957年11月3日发射,它搭载着一只名为莱卡的小狗——第一个绕地球轨道飞行的生物。在进入轨道后,其内部温度上升到40摄氏度,导致莱卡仅存活了数小时,而不是计划中的几天。

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斯普特尼克2号
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