Nakano Note (Nakano wa Kangaeru noda) NK 3000 P/2014 MG4 (Spacewatch-PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 122 observations 2014 June 20 to 2015 Aug. 26. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.59 arc second. The late 2015 August observations show the residuals of -17" and -10" from an orbit in NK 2967 (= HICQ 2015). See the previous orbits in NK 2800 and NK 2967. Epoch = 2013 May 28.0 TT T = 2013 June 13.54471 +/- 0.00786 (m.e.) TT Peri. = 298.85971 +/- 0.00167 Node = 311.86133 +/- 0.00005 (2000.0) Inc. = 9.36749 +/- 0.00003 q = 3.7143056 +/- 0.0000551 AU e = 0.2588798 +/- 0.0000134 a = 5.0117449 +/- 0.0000234 AU n' = 0.08784573 +/- 0.00000061 P = 11.220 +/- 0.0000785 years The predicted orbit for the 2024 return is as follows: T = 2024 Sept. 6.76702 TT Epoch = 2024 Sept. 7.0 TT Peri. = 298.93610 e = 0.2587415 Node = 311.69286 (2000.0) a = 5.0141687 AU Inc. = 9.36499 n'= 0.08778204 q = 3.7167951 AU P = 11.228 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2014/ 140727 104 0.3- 0.4+ 140915 215 (2.9- 1.6-) 140620 691 0.1- 0.2+ 140727 104 0.2- 0.4+ 140928 A77 1.3- 0.6+ 140620 691 0.4- 0.6+ 140728 W96 0.7- 0.4+ 140928 A77 0.7- 0.7+ 140620 691 0.3- 0.8+ 140728 W96 0.6- 0.1+ 141002 585 0.6+ 0.1+ 140620 691 0.4- 0.8+ 140728 J01 0.3- 0.9+ 141002 585 1.4+ 1.3+ 140620 691 0.4- 0.8+ 140728 J01 0.4- 0.3+ 141018 585 0.3+ 0.9+ 140620 691 0.5- 0.8+ 140729 J01 0.5- 0.2+ 141018 585 0.4+ 1.3+ 140621 691 1.0- 0.8+ 140730 F51 0.2+ 0.2- 141018 585 0.6+ 1.4+ 140621 691 0.6- 0.8+ 140730 F51 0.2+ 0.2- 141018 215 0.5- 0.9+ 140621 691 0.2+ 0.3+ 140730 F51 0.1+ 0.2- 141018 585 0.0 1.8+ 140621 691 1.0- 1.0+ 140730 F51 0.2+ 0.3- 141018 215 0.6- 0.7+ 140621 691 1.3- 0.7+ 140730 C77 0.9- 0.6+ 141018 215 0.5- 0.3+ 140621 691 0.8- 0.6+ 140730 C77 0.4- 0.4+ 141120 G96 0.7- 0.7+ 140725 F51 0.3+ 0.1- 140730 C77 0.0 0.3+ 141120 G96 0.6- 0.4+ 140725 F51 0.3+ 0.1- 140731 K25 0.4- 0.6+ 141120 G96 0.6- 0.7- 140726 G45 0.5- 0.8+ 140731 K25 1.0- 0.8+ 141120 G96 0.4- 1.0+ 140726 G45 1.1- 1.1+ 140803 F51 0.1+ 0.1- 141123 D95 0.6+ 0.6- 140726 G45 1.2- 0.5+ 140803 F51 0.1+ 0.1- 141123 D95 0.8+ 1.0- 140726 G45 1.2- 0.4+ 140803 F51 0.1+ 0.1- 2015/ 140726 G45 0.5- 0.7+ 140803 F51 0.4+ 0.4- 150728 F51 0.2+ 0.0 140726 G45 0.3- 0.8+ 140804 K25 0.6- 0.6+ 150728 F51 0.1- 0.0 140726 568 0.1+ 0.4- 140804 K25 0.8- 0.9+ 150728 F51 0.2+ 0.1+ 140726 568 0.4+ 0.4- 140805 F51 0.1+ 0.0 150728 F51 0.0 0.1+ 140726 568 0.5+ 0.3- 140805 F51 0.1+ 0.1+ 150805 G45 0.2- 0.3- 140726 300 0.4- 1.4+ 140805 F51 0.0 0.0 150805 G45 0.1+ 0.5+ 140726 300 0.2- 0.6+ 140816 474 0.1- 0.1+ 150805 G45 0.1- 0.7+ 140726 300 0.2- 1.0+ 140816 474 0.1- 0.2+ 150805 G45 0.2+ 0.9+ 140726 300 0.1+ 1.3+ 140816 474 0.0 0.1+ 150805 G45 0.5- 0.5+ 140726 194 0.0 0.1+ 140818 585 0.3- 0.1+ 150805 G45 0.9- 0.5+ 140726 194 0.2- 0.2+ 140818 585 0.3- 0.1+ 150814 G45 0.3- 0.3+ 140726 194 0.0 0.2+ 140818 585 0.4- 0.5+ 150814 G45 0.8- 0.5+ 140726 958 0.6- 0.0 140818 585 0.1- 0.0 150814 G45 0.6- 0.2+ 140726 958 0.6- 0.1+ 140818 585 0.7- 0.6+ 150814 G45 0.5- 0.7+ 140727 958 0.7- 0.4+ 140818 585 0.6- 1.0+ 150814 G45 0.4- 1.1+ 140727 W96 1.7- 0.4- 140818 585 0.5- 1.3+ 150814 G45 0.0 0.3+ 140727 W96 0.4- 0.4+ 140827 F51 0.1- 0.3- 150821 F51 0.1+ 0.2- 140727 H06 0.5- 1.1+ 140827 F51 0.1- 0.2- 150821 F51 0.1+ 0.3- 140727 H06 0.8- 0.7+ 140827 F51 0.0 0.3- 150821 F51 0.0 0.2- 140727 Q62 1.6- 0.1+ 140827 F51 0.0 0.4- 150826 215 0.1- 0.0 140727 Q62 0.0 1.0+ 140914 E07 0.6- 0.8+ 150826 215 0.3- 0.0 140727 Q62 0.1- 0.6+ 140914 E07 0.2- 0.5+ 150826 215 0.6- 0.0 140727 Q62 0.2+ 0.3- 140915 215 (3.4- 1.4-) 140727 104 0.3- 0.4+ 140915 215 (3.2- 1.6-) ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2015 Sept. 11

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