Nakano Note (Nakano wa Kangaeru noda) NK 4404 P/2012 T3 (PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 33 observations 2012 Oct. 10 to Nov. 1. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.28 arc second. Epoch = 2012 Apr. 23.0 TT T = 2012 Apr. 27.07144 +/- 0.32488 (m.e.) TT Peri. = 196.34507 +/- 0.19726 Node = 114.32147 +/- 0.03736 (2000.0) Inc. = 9.51634 +/- 0.00277 q = 2.3781785 +/- 0.0026537 AU e = 0.6077165 +/- 0.0011365 a = 6.0623976 +/- 0.0188213 AU n' = 0.06602942 +/- 0.00030749 P = 14.927 +/- 0.0695126 years (+/-25.4 days) The predicted orbit for the 2027 return is as follows (prediction is necessary uncertainty): T = 2027 Mar. 23.30454 TT Epoch = 2027 Mar. 16.0 TT Peri. = 196.38987 e = 0.6081132 Node = 114.19280 (2000.0) a = 6.0608459 AU Inc. = 9.52562 n'= 0.06605477 q = 2.3751653 AU P = 14.921 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2012/ 121011 D35 0.0 0.2+ 121015 291 0.0 0.4+ 121010 F51 0.0 0.1+ 121011 D35 0.1- 0.1+ 121016 291 0.3+ 0.6- 121010 F51 0.1- 0.1+ 121012 807 0.6+ 0.3+ 121016 291 0.1+ 0.0 121010 F51 0.4- 0.0 121012 807 0.3+ 0.1+ 121016 291 0.1- 0.4+ 121010 F51 0.1- 0.2+ 121012 807 0.3+ 0.1- 121017 E07 0.1+ 0.3- 121011 807 0.2+ 0.4- 121012 807 0.1+ 0.1- 121017 E07 0.8- 0.4- 121011 807 0.6+ 0.1- 121012 807 0.1+ 0.2+ 121019 215 (4.0- 4.9-) 121011 807 0.4+ 0.5- 121015 304 0.0 0.1+ 121019 215 (0.9- 3.2-) 121011 H06 0.3+ 0.2+ 121015 304 0.0 0.1+ 121022 C10 (2.1+ 5.7-) 121011 H06 0.3- 0.4+ 121015 304 0.1- 0.0 121022 C10 (3.5- 1.4+) 121011 F65 0.1+ 0.2- 121015 304 0.0 0.0 121101 F51 0.2- 0.2- 121011 F65 0.4+ 0.4- 121015 291 0.3- 0.1- 121101 F51 0.3+ 0.1+ 121011 D35 0.5+ 0.1+ 121015 291 0.0 0.1- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2021 Mar. 19

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