Nakano Note (Nakano wa Kangaeru noda) NK 4819 437P/Lemmon-PANSTARRS

The following improved orbital elements, by S. Nakano, are from 100 observations 2004 to 2021. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.36 arc second. The comet has passed 0.39 AU from Jupiter on 2007 Dec. 9 UT. See the previous orbit in CBET 5069 (= NK 4554). Epoch = 2022 Aug. 9.0 TT T = 2022 Aug. 18.46094 +/- 0.00048 (m.e.) TT Peri. = 206.71968 +/- 0.00017 Node = 245.86755 +/- 0.00013 (2000.0) Inc. = 3.68934 +/- 0.00001 q = 3.4001715 +/- 0.0000006 AU e = 0.2542841 +/- 0.0000001 a = 4.5596071 +/- 0.0000011 AU n' = 0.10123086 +/- 0.00000004 P = 9.736 +/- 0.0000037 years T = 2004 Apr. 26.01152 TT Epoch = 2004 Apr. 25.0 TT Peri. = 228.71887 e = 0.1892150 Node = 268.48475 (2000.0) a = 4.8740102 AU Inc. = 3.85038 n'= 0.09159556 q = 3.9517741 AU P = 10.760 years T = 2012 Nov. 27.73545 TT Epoch = 2012 Nov. 9.0 TT Peri. = 206.86046 e = 0.2557423 Node = 245.91879 (2000.0) a = 4.5746713 AU Inc. = 3.69034 n'= 0.10073125 q = 3.4047344 AU P = 9.785 years The predicted orbit for the 2032 return is as follows: T = 2032 May 31.35619 TT Epoch = 2032 June 17.0 TT Peri. = 206.86221 e = 0.2534004 Node = 245.77587 (2000.0) a = 4.5853766 AU Inc. = 3.68330 n'= 0.10037870 q = 3.4234403 AU P = 9.819 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2004/ 130116 926 0.1+ 1.0- 211105 691 (2.0- 0.6+) 040317 645 0.0 0.3+ 130118 F51 0.6+ 0.0 211105 691 0.7- 0.2+ 040317 645 0.1+ 0.4+ 130118 F51 0.7+ 0.1- 211105 F65 0.4+ 0.5+ 040317 645 0.1- 0.0 130308 F51 0.7+ 0.0 211105 F65 0.6+ 0.1- 2011/ 130308 F51 0.5+ 0.2- 211107 G96 0.4- 0.3- 110830 568 0.2+ 0.0 2014/ 211107 G96 0.2- 0.5- 110830 568 0.4+ 0.1+ 140302 W84 0.1+ 0.2+ 211107 G96 0.5- 0.1+ 110830 568 0.2+ 0.0 140302 W84 0.0 0.1- 211107 G96 0.3+ 0.0 110905 568 0.2+ 0.0 140303 W84 0.3- 0.2- 211107 691 0.6- 0.1- 111024 G96 0.2+ 0.2+ 140303 W84 0.3- 0.1- 211107 691 0.6- 0.2- 111024 G96 0.2- 0.1+ 140303 W84 0.1+ 0.1- 211107 691 0.1- 0.1- 111024 G96 0.0 0.1- 140304 W84 0.1+ 0.5- 211108 F65 0.2+ 0.0 111024 G96 0.2+ 0.1- 2021/ 211108 F65 0.2+ 0.0 111030 G96 0.6- 0.3- 211013 F52 0.0 0.0 211108 F65 0.2+ 0.1- 111030 G96 0.6- 0.3- 211013 F52 0.1+ 0.2- 211109 F52 0.1+ 0.0 111030 G96 0.5- 0.5- 211013 F52 0.3+ 0.2- 211109 F52 0.1- 0.2- 111030 G96 0.5- 0.7- 211014 F51 0.2+ 0.1- 211109 F52 0.2+ 0.1- 111112 F51 0.1- 0.1+ 211014 F51 0.2+ 0.1- 211109 F52 0.1- 0.1+ 111112 F51 0.1- 0.0 211026 F51 0.2+ 0.1+ 211109 F51 0.2+ 0.0 2012/ 211026 F51 0.1+ 0.3+ 211109 F51 0.2+ 0.1- 120120 G96 0.5+ 0.0 211029 F52 0.2+ 0.0 211114 G96 0.1- 0.4- 120120 G96 0.6+ 0.4+ 211029 F52 0.0 0.0 211114 G96 0.6- 0.4+ 120120 G96 0.4+ 0.3- 211101 F51 0.2+ 0.2- 211114 G96 0.1+ 0.1+ 120120 G96 0.4+ 0.0 211101 F51 0.3+ 0.0 211114 G96 0.3- 0.4- 120210 G96 0.1+ 0.3+ 211101 F51 0.4- 0.2- 211129 G96 0.6+ 0.2- 120210 G96 0.4- 0.2+ 211101 F51 0.2+ 0.1- 211129 G96 0.4+ 0.5+ 120210 G96 0.1+ 0.1- 211101 F51 0.2+ 0.0 211129 G96 0.2- 0.0 120210 G96 0.7+ 0.2+ 211101 F51 0.2+ 0.1- 211129 G96 0.1- 0.3+ 121028 F51 0.4+ 0.0 211101 F51 0.2+ 0.0 211205 658 0.0 0.5+ 121028 F51 0.3+ 0.0 211103 F65 0.0 0.0 211205 658 0.2+ 0.5+ 121220 926 1.4- 0.7- 211103 F65 0.3+ 0.0 211205 658 0.2- 0.5+ 121220 926 0.5- 0.6+ 211103 F65 0.0 0.2+ 211205 658 0.6- 0.8+ 121220 926 0.9- 0.0 211103 F65 0.0 0.0 211207 215 1.6+ 0.0 2013/ 211105 H06 0.8- 0.2- 211207 215 0.1+ 0.1+ 130116 926 0.2+ 0.3+ 211105 H06 1.0- 0.2- 211207 215 0.1+ 0.2- 130116 926 0.4- 0.1+ 211105 691 0.4- 0.1- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2022 Oct. 28

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