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发表于 2012-6-11 00:46
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回复: 4来自: 湖南省常德市 电信
本帖最后由 suhuasky 于 2012-6-11 00:48 编辑
Hmmm. Is C/2012 K5 a little fragment of HB? Peri, node adn incl are very
similar, but HB has prograde orbit, K5 has retrograde orbit.
C/1995 O1 (Hale-Bopp)
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5
T 1997 Mar. 31.0802 TT MPC
q 0.908720 (2000.0) P Q
z +0.005576 Peri. 130.5601 -0.1313037 -0.1665814
+/-0.000000 Node 282.2358 +0.2821421 +0.9387339
e 0.994933 Incl. 89.4979 +0.9503448 -0.3017106
C/2012 K5 (LINEAR)
Epoch 2012 Dec. 19.0 TT = JDT 2456280.5
T 2012 Nov. 29.1614 TT MPC
q 1.121690 (2000.0) P Q
z +0.013853 Peri. 140.4042 -0.1462358 -0.0627887
+/-0.003950 Node 278.7836 +0.4413646 +0.8890071
e 0.984461 Incl. 92.5996 +0.8853318 -0.4535680
>From 140 observations 2012 May 25-June 1, mean residual 0".6.
2012K5具有和海尔波普非常近似的轨道根数,而2012K5近地点不到0.3AU,并且处于冲日位置,可惜个头太小了点,最大亮度10等,如果海尔波普彗星早几个月过近日点,那么其亮度在近地点时可接近-5等,比金星还亮,真可惜啊。
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