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主題: P10E7Iu 未來的彗星 2020 ?? 作者: peter 於 2017-10-19 00:16:45 P10E7Iu
https://groups.yahoo.com/neo/groups/comets-ml/conversations/messages/26780 Orbital elements: P10E7Iu Perihelion 2020 May 9.041632 +/- 2.47 TT = 0:59:57 (JD 2458978.541632) Epoch 2017 Oct 18.0 TT = JDT 2458044.5 Ju: 0.9861 Find_Orb M 359.86576 +/- 0.11 n 0.00014370 +/- 0.000112 Peri. 93.03975 +/- 0.07 a 360.977109 +/- 187 Node 64.51435 +/- 0.051 e 0.9955034 +/- 0.00236 Incl. 57.08055 +/- 0.058 P6858.35 H 9.9 G 0.15 U 6.6 q 1.62316758 +/- 0.00375 Q 720.331050 +/- 460 From 60 observations 2017 Sept. 15-Oct. 18; mean residual 0".24 軌道好像還不確定 但一說會到 2.5AU 位置 |