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小行星6344 P-L

6344 P-L (2007 RR9)
轨道参数
轨道周期4.7年

6344 P–L是在1960年被Tom Gehrels、Ingrid van Houten-Groeneveld、和 Cornelis Johannes van Houten发现的太阳系小天体。在1960年最后的出现之后,它就被认为失踪了,直到2007年才再度被发现并赋予临时名称2007 RR9 (也可以写成 2007 RR9) [1]。换言之,它从1960年至2007年再发现之前,曾是一颗迷踪小行星[2]。P–L代表着Palomar–Leiden,是帕洛玛天文台和莱登天文台[2]

它是一颗小行星和熄火彗星的彗核,以4.7年的周期绕行太阳[2]。它的轨道最远处在木星之外,但可接近地球至0.07天文单位,始它有与地球碰撞的风险[2]

6344 P–L是一颗潜在威胁天体和可能休眠的熄火彗星,但它被再发现之后未曾有过气体的喷发[2]

相关条目

[编辑]

帕洛玛–莱登巡天

参考资料

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小行星6344 P-L
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