Nakano Note (Nakano wa Kangaeru noda) NK 4554 P/Lemmon-PANSTARRS (2021 V3 = 2011 UE215)
The following improved orbital elements, by S. Nakano, are from 61 observations 2011 to 2021. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.34 arc second. The comet has passed 0.39 AU from Jupiter on 2007 Dec. 9 UT. Before this close approach, orbit was T= 2004 04 26.1, q= 3.952 AU, e= 0.189, Peri.= 228.7, Node= 268.5, i= 3.8, a= 4.874, P= 10.8 years. See an orbit in CBET 5069 (same orbit). Epoch = 2022 Aug. 9.0 TT T = 2022 Aug. 18.43942 +/- 0.00833 (m.e.) TT Peri. = 206.71614 +/- 0.00148 Node = 245.86721 +/- 0.00025 (2000.0) Inc. = 3.68935 +/- 0.00004 q = 3.4001997 +/- 0.0000101 AU e = 0.2542778 +/- 0.0000022 a = 4.5596066 +/- 0.0000193 AU n' = 0.10123088 +/- 0.00000064 P = 9.736 +/- 0.0000618 years T = 2012 Nov. 27.71364 TT Epoch = 2012 Nov. 9.0 TT Peri. = 206.85697 e = 0.2557359 Node = 245.91845 (2000.0) a = 4.5746736 AU Inc. = 3.69035 n'= 0.10073118 q = 3.4047654 AU P = 9.785 years The predicted orbit for the 2032 return is as follows: T = 2032 May 31.33385 TT Epoch = 2032 June 17.0 TT Peri. = 206.85867 e = 0.2533941 Node = 245.77553 (2000.0) a = 4.5853763 AU Inc. = 3.68331 n'= 0.10037871 q = 3.4234690 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(") 2011/ 130116 926 0.6+ 0.3+ 211101 F51 0.1+ 0.0 111024 G96 0.4+ 0.3+ 130116 926 0.1+ 0.1+ 211103 F65 0.2- 0.0 111024 G96 0.0 0.1+ 130116 926 0.6+ 1.0- 211103 F65 0.1+ 0.1+ 111024 G96 0.3+ 0.0 2021/ 211103 F65 0.2- 0.2+ 111024 G96 0.5+ 0.0 211013 F52 0.1- 0.1+ 211103 F65 0.2- 0.0 111030 G96 0.4- 0.2- 211013 F52 0.0 0.1- 211105 H06 1.0- 0.2- 111030 G96 0.4- 0.2- 211013 F52 0.1+ 0.1- 211105 H06 1.2- 0.1- 111030 G96 0.2- 0.4- 211014 F51 0.1+ 0.1- 211105 691 0.6- 0.1- 111030 G96 0.3- 0.6- 211014 F51 0.0 0.1- 211105 691 (2.2- 0.6+) 2012/ 211026 F51 0.2+ 0.2+ 211105 691 0.9- 0.2+ 120120 G96 0.3+ 0.0 211026 F51 0.1+ 0.4+ 211105 F65 0.2+ 0.6+ 120120 G96 0.4+ 0.4+ 211029 F52 0.0 0.0 211105 F65 0.5+ 0.1- 120120 G96 0.2+ 0.3- 211029 F52 0.1- 0.1+ 211107 G96 0.5- 0.2- 120120 G96 0.1+ 0.0 211101 F51 0.1+ 0.0 211107 G96 0.4- 0.5- 120210 G96 0.3- 0.3+ 211101 F51 0.1+ 0.0 211107 G96 0.6- 0.1+ 120210 G96 0.7- 0.1+ 211101 F51 0.1+ 0.1+ 211107 G96 0.1+ 0.0 120210 G96 0.2- 0.1- 211101 F51 0.5- 0.2- 211107 691 0.8- 0.0 120210 G96 0.4+ 0.1+ 211101 F51 0.0 0.0 211107 691 0.8- 0.2- 121220 926 0.9- 0.6- 211101 F51 0.2+ 0.0 211107 691 0.3- 0.1- 121220 926 0.0 0.7+ 211101 F51 0.1+ 0.0 211108 F65 0.0 0.0 121220 926 0.4- 0.1+ 211101 F51 0.2+ 0.1- 211108 F65 0.1+ 0.0 2013/ 211101 F51 0.0 0.0 211108 F65 0.0 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 Nov. 10