Nakano Note (Nakano wa Kangaeru noda) NK 3716 P/2018 M1 (Catalina)

The following improved orbital elements, by S. Nakano, are from 155 observations 2018 June 25 to Nov. 4. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.58 arc second. Epoch = 2018 July 21.0 TT T = 2018 July 10.02486 +/- 0.00071 (m.e.) TT Peri. = 14.13303 +/- 0.00063 Node = 339.46425 +/- 0.00065 (2000.0) Inc. = 37.25750 +/- 0.00025 q = 1.3034924 +/- 0.0000125 AU e = 0.9387323 +/- 0.0000459 a = 21.2753474 +/- 0.0159142 AU n' = 0.01004359 +/- 0.00001128 P = 98.133 +/- 0.1100778 years (+/-40.2 days) The predicted orbit for the 2117 return is as follows: T = 2117 Aug. 10.44934 TT Epoch = 2117 July 22.0 TT Peri. = 14.12798 e = 0.9395910 Node = 339.54307 (2000.0) a = 21.6905981 AU Inc. = 37.17147 n'= 0.00975656 q = 1.3103071 AU P = 101.020 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2018/ 180713 Q11 0.0 0.9- 180910 H06 0.0 0.2- 180625 703 0.2- 0.1+ 180714 461 0.0 0.4+ 180910 H06 0.0 0.1- 180625 703 (2.0+ 1.2+) 180714 461 0.0 0.2+ 180910 H06 0.1+ 0.1+ 180625 703 (4.4+ 0.5+) 180714 461 0.2- 0.2+ 180911 703 0.6- 0.0 180625 Q62 0.1- 0.1- 180714 J22 1.5+ 1.5- 180911 703 0.3- 0.5+ 180625 Q62 0.2+ 0.1- 180714 J22 0.1+ 0.7- 180911 703 1.1- 1.3+ 180625 Q62 0.3+ 0.1+ 180714 J22 0.1+ 0.2+ 180914 703 1.3- 1.8- 180626 691 0.4- 0.0 180720 C47 0.1- 0.2+ 180914 703 (2.7- 1.6-) 180626 691 0.7- 0.0 180720 C47 0.3- 0.4+ 180914 703 (3.1- 0.8-) 180626 691 0.2- 0.2+ 180720 C47 0.6- 0.1- 180914 703 (4.8- 0.5-) 180628 G40 0.6+ 0.2- 180720 C47 1.1+ 0.3- 180917 T08 0.7+ 0.0 180628 G40 0.3+ 0.6- 180720 C47 0.9- 0.2- 180917 T08 0.1- 0.1+ 180628 H36 0.4- 1.4+ 180721 A71 1.0- 0.2+ 180917 T08 0.2- 0.0 180628 H36 1.3- 0.6- 180721 A71 0.8- 0.5+ 180917 T08 0.1+ 0.2+ 180629 G40 1.3+ 0.4- 180722 J22 0.1+ 0.6- 180927 C51 0.0 0.1- 180629 G40 1.0+ 0.7+ 180722 J22 1.2+ 0.4+ 180927 C51 0.2+ 0.2- 180629 G40 0.0 0.2- 180722 J22 (3.0+ 0.1+) 180927 C51 0.3+ 0.1+ 180629 G40 0.6+ 0.1+ 180801 160 0.1+ 0.8+ 180927 C51 0.3- 0.1- 180629 G40 0.1- 0.3+ 180801 160 0.6- 0.1+ 180927 C51 0.1+ 0.1+ 180629 N55 1.1+ 1.6+ 180801 160 1.1- 0.2- 180927 C51 0.2+ 0.0 180629 N55 1.0+ 1.8+ 180803 B96 0.2- 0.9+ 180927 C51 0.0 0.3- 180629 N55 0.6+ 1.3+ 180803 B96 0.7- 0.1- 180928 C51 0.3- 0.9+ 180629 N55 1.1+ 1.1+ 180803 B96 0.3+ 1.1+ 180928 C51 0.1- 0.1+ 180630 C10 1.0- 0.4+ 180803 G40 0.5+ 0.4- 180928 C51 0.1+ 0.1- 180630 C10 0.4- 1.3+ 180803 G40 0.6+ 0.3+ 180928 C51 0.1+ 0.3- 180630 C10 (1.1+ 2.3+) 180803 G40 0.4+ 0.1- 180928 C51 0.3+ 0.5+ 180701 204 0.4+ 0.2- 180803 D81 1.5- 0.9+ 180928 C51 0.3- 0.4- 180701 204 0.1- 0.3- 180803 D81 1.7- 1.4+ 180928 C51 0.6+ 0.0 180701 204 0.4- 0.1- 180803 D81 (2.6- 0.8+) 180928 C51 0.0 0.1+ 180701 I52 0.6- 1.0- 180803 D81 0.2- 0.2+ 180928 C51 0.2- 0.1- 180701 I52 0.2- 0.4- 180806 B96 0.6+ 0.0 180928 C51 0.2+ 0.6- 180701 I52 0.9- 0.9- 180806 B96 0.5+ 0.2+ 180928 C51 0.1+ 1.1- 180701 I52 0.2- 0.6- 180806 B96 0.3+ 0.7- 180929 C51 0.2+ 0.3- 180702 J22 0.6- 0.3+ 180807 B96 0.4- 0.2- 180929 C51 0.0 0.0 180702 J22 0.2+ 0.3- 180807 B96 0.8+ 0.2- 180929 C51 0.6- 0.6+ 180702 J22 0.9+ 0.5- 180807 B96 0.7- 0.5- 180929 C51 0.2- 0.3- 180702 J22 0.8- 0.6- 180808 I72 (1.8- 3.0-) 181002 C51 0.5+ 0.3- 180702 J22 0.1+ 0.4- 180808 I72 (2.8- 2.7-) 181002 C51 0.1+ 0.6- 180702 J22 0.4+ 0.4- 180808 I72 (2.8- 2.6-) 181002 C51 0.4+ 0.1- 180702 703 0.9+ 0.1- 180809 349 0.1- 0.3- 181002 C51 0.0 0.2- 180702 703 0.3+ 0.5- 180809 349 0.5- 0.2+ 181003 C51 1.0+ 0.2+ 180702 703 1.2+ 1.5- 180812 C47 0.2+ 0.1+ 181003 C51 0.1- 0.3- 180703 703 0.3- 0.3- 180812 C47 0.5+ 0.4+ 181003 I72 0.5+ 1.1- 180703 703 0.2- 0.1+ 180812 C47 0.4- 0.1+ 181003 I72 0.8- 0.9- 180703 703 0.2- 0.4- 180812 C47 0.4+ 0.0 181003 C51 0.4+ 0.1+ 180703 703 0.1- 0.1+ 180813 C47 0.3+ 0.3+ 181003 I72 1.4- 1.1- 180705 703 0.1- 0.2- 180813 C47 0.1- 0.1- 181003 C51 0.1+ 0.1+ 180705 703 0.2- 1.1- 180814 H06 0.3- 0.3+ 181003 C51 0.3- 0.9+ 180705 703 0.3+ 0.1- 180814 H06 0.2+ 0.0 181003 C51 0.2+ 0.0 180705 703 0.2+ 0.2+ 180824 H06 0.2+ 0.1+ 181003 C51 0.0 0.3+ 180709 215 0.2+ 0.2+ 180824 H06 0.2+ 0.5+ 181003 C51 0.0 0.2+ 180709 215 0.2+ 0.0 180902 B96 1.3- 0.2- 181003 C51 0.0 0.3+ 180709 215 0.2+ 0.0 180902 B96 (6.1- 1.1+) 181104 372 0.2+ 0.2+ 180713 K77 (2.4- 1.3+) 180908 703 1.7+ 1.1+ 181104 372 0.3+ 0.3+ 180713 K77 0.8- 1.1+ 180908 703 0.4+ 0.4+ 181104 372 0.4- 0.4+ 180713 Q11 0.0 0.9- 180908 703 0.0 0.6- 180713 Q11 0.0 0.9- 180908 703 0.4- 0.8- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2018 Nov. 21

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