Nakano Note (Nakano wa Kangaeru noda) NK 4245 C/2020 P1 (NEOWISE)

The following improved orbital elements, by S. Nakano, are from 121 observations 2020 Aug. 2 to Oct. 24. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.91 arc second. The comet has passed 4.74 AU from Saturn on 2017 Dec. 19 and 2.48 AU from Jupiter on 2019 Oct. 22 UT. See the previous orbit in CBET 4825. Epoch = 2020 Nov. 7.0 TT T = 2020 Oct. 20.17962 +/- 0.00014 (m.e.) TT Peri. = 8.89723 +/- 0.00039 Node = 53.53750 +/- 0.00043 (2000.0) Inc. = 45.05183 +/- 0.00041 q = 0.3421980 +/- 0.0000038 AU e = 1.0002502 +/- 0.0000120 1/a = -0.0007313 +/- 0.0000350 1/AU origin = +0.000331 (Q= 6) future = -0.000878 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 200805 X31 0.2- 0.1+ 200920 Q38 (1.1- 3.5+) 200802 C51 1.6+ 1.6- 200805 X31 0.0 0.1- 200920 Q38 0.1- 0.5+ 200802 C51 1.0+ 0.9- 200805 X31 0.5- 0.2- 200920 Q38 (1.2- 2.9+) 200802 C51 1.4+ 0.2+ 200806 X74 0.9+ 0.1- 200920 C53 (2.5+ 2.3-) 200802 C51 2.2+ 2.0+ 200806 X74 1.5+ 1.8- 200920 C53 (2.5+ 2.7-) 200802 C51 0.7+ 0.7- 200806 X74 (2.6+ 2.4-) 200920 C53 (3.3+ 2.9-) 200803 C51 1.3+ 0.2- 200807 G39 1.9+ 0.2- 200920 C53 (3.3+ 2.3-) 200803 C51 0.0 0.7- 200807 G39 1.6- 0.5+ 200920 C53 (3.3+ 1.6-) 200803 C51 1.0+ 0.4- 200807 G39 0.3- 1.5+ 200920 C53 (2.6+ 0.7-) 200803 C51 0.7+ 0.8- 200807 W88 0.7- 0.1- 200920 C53 (3.5+ 1.5-) 200804 Q62 0.3+ 0.2+ 200808 W88 0.2- 0.4- 200920 C53 (2.8+ 0.6-) 200804 Q62 0.9- 1.4+ 200808 W88 0.1- 0.4- 200920 C53 (3.1+ 0.5-) 200804 Q62 1.0+ 0.2+ 200808 W88 0.8+ 1.0- 200920 C53 (3.6+ 3.1-) 200804 Q62 0.2- 0.1+ 200808 W88 0.1+ 0.5- 200920 C53 (3.7+ 1.4-) 200804 Y00 (2.9+ 1.7-) 200808 W88 0.1- 0.0 200920 C53 (1.3+ 3.5-) 200804 Y00 1.4+ 0.1- 200810 Q38 1.7+ 1.6- 200928 Q38 0.5- 1.4+ 200804 Y00 (2.3+ 0.7-) 200810 Q38 1.3- 0.1+ 200928 Q38 0.2- 0.4+ 200804 Y00 (2.8+ 1.7-) 200810 Q38 (1.1+ 2.3-) 200928 Q38 2.1+ 0.2- 200804 Y00 (2.6+ 0.2-) 200816 Q38 1.7+ 0.9- 200928 Q38 1.0- 1.8+ 200805 W88 0.3- 0.2- 200816 Q38 0.5+ 0.7- 200928 Q38 1.1+ 1.6- 200805 W88 0.3- 0.1+ 200816 Q38 0.7+ 0.9- 201001 C53 1.3+ 1.0- 200805 W88 0.2+ 0.3+ 200826 Q62 0.5- 0.4- 201001 C53 1.2+ 1.3- 200805 W88 0.5+ 0.2- 200826 Q62 0.4- 0.6- 201001 C53 1.2+ 0.0 200805 W88 0.8+ 0.6- 200826 Q62 0.1- 0.8- 201001 C53 1.2+ 0.3- 200805 W88 0.5+ 0.7- 200828 Q62 0.0 0.9- 201001 C53 1.2+ 0.6- 200805 Q63 0.7- 0.4+ 200828 Q62 0.1+ 0.6- 201001 C53 1.0+ 0.9- 200805 Q63 0.7- 0.3+ 200828 Q62 0.0 0.3- 201001 C53 1.3+ 1.0- 200805 Q62 0.1+ 0.4- 200828 Q62 0.0 0.3- 201001 C53 1.7+ 0.1- 200805 Q63 0.7- 0.5+ 200906 Q62 0.9- 0.0 201001 C53 1.8+ 0.0 200805 Q62 0.0 0.2- 200906 Q62 1.0- 0.2+ 201001 C53 1.3+ 0.7- 200805 Q62 0.2+ 0.3- 200906 Q62 0.8- 0.1+ 201001 C53 1.5+ 0.7- 200805 Q62 0.7- 0.5- 200909 Q38 0.2- 1.1+ 201001 C53 1.3+ 0.6- 200805 Q62 0.3- 0.1+ 200909 Q38 0.2+ 1.1+ 201001 C53 1.5+ 0.4- 200805 Q62 0.9- 0.3+ 200909 Q38 0.5+ 0.0 201001 C53 1.6+ 0.5- 200805 E23 1.2+ 0.3- 200909 Q38 1.3+ 0.2- 201003 E94 1.3- 1.9+ 200805 E23 1.4+ 0.1- 200912 W88 1.2- 1.2+ 201003 E94 1.0- 1.3+ 200805 E23 1.4+ 0.3- 200912 W88 1.1- 0.6+ 201003 E94 0.2- 1.8+ 200805 Q62 0.0 0.4- 200912 W88 0.6- 0.2+ 201005 W88 2.0- 0.8- 200805 Q62 0.6+ 0.6- 200914 Q38 1.1- 0.6+ 201005 W88 2.1- 1.4- 200805 Q62 0.2+ 0.4- 200914 Q38 0.7- 0.1- 201005 W88 1.2- 0.8- 200805 Q62 0.5+ 1.5- 200914 Q38 0.9+ 2.2+ 201005 W88 1.3- 0.4- 200805 Q62 0.4+ 0.8- 200914 Q38 0.5+ 0.0 201005 W88 0.7- 0.1+ 200805 Q62 0.1+ 0.3- 200914 Q38 0.1+ 2.0+ 201005 W88 1.5- 0.1- 200805 Q62 0.1+ 0.1- 200915 Q62 1.1- 1.2+ 201005 W88 0.7- 0.0 200805 Q62 0.1+ 0.1- 200915 Q62 1.2- 1.4+ 201024 349 1.2- 0.1+ 200805 X31 0.1- 0.4- 200915 Q62 1.1- 1.3+ 201024 349 2.1- 1.2+ 200805 X31 0.6- 0.1+ 200915 Q62 1.4- 1.2+ 201028 A71 (4.6- 3.2+) 200805 X31 0.8- 0.4+ 200920 Q38 (2.4- 0.8+) 201028 A71 (6.3- 4.4+) 200805 X31 0.2- 0.1+ 200920 Q38 (0.3- 3.2+) 201028 A71 (5.1- 4.6+) ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2020 Nov. 8

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