Nakano Note (Nakano wa Kangaeru noda) NK 3081 P/2015 B4 (Lemmon-PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 52 observations 2015 Jan. 16 to 2016 Mar. 15. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.16 arc second. Epoch = 2015 Feb. 27.0 TT T = 2015 Feb. 19.92152 +/- 0.00530 (m.e.) TT Peri. = 227.59154 +/- 0.00097 Node = 267.21536 +/- 0.00023 (2000.0) Inc. = 1.74894 +/- 0.00000 q = 3.7584995 +/- 0.0000157 AU e = 0.5706276 +/- 0.0000042 a = 8.7534724 +/- 0.0000106 AU n' = 0.03805691 +/- 0.00000007 P = 25.898 +/- 0.0000470 years The predicted orbit for the 2039 return is as follows: T = 2039 Dec. 6.18144 TT Epoch = 2039 Nov. 28.0 TT Peri. = 227.10934 e = 0.5643416 Node = 265.92308 (2000.0) a = 8.5835637 AU Inc. = 1.76025 n'= 0.03919247 q = 3.7395014 AU P = 25.148 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 150311 G96 0.1+ 0.1- 160312 F51 0.0 0.1- 150116 G96 0.3- 0.0 150311 G96 0.0 0.1+ 160313 F51 0.0 0.0 150116 G96 0.1- 0.1+ 150311 G96 0.4+ 0.1- 160313 F51 0.1- 0.1- 150116 G96 0.2- 0.2- 150410 F51 0.1- 0.1+ 160313 F51 0.0 0.1- 150118 F51 0.0 0.1+ 150410 F51 0.0 0.0 160313 F51 0.0 0.1- 150118 F51 0.0 0.1+ 150410 F51 0.1+ 0.1+ 160314 F51 0.1- 0.1+ 150118 F51 0.0 0.0 150410 F51 0.1+ 0.3- 160314 F51 0.0 0.2+ 150118 F51 0.1+ 0.0 2016/ 160314 F51 0.2+ 0.2+ 150122 F51 0.1+ 0.0 160116 F51 0.3- 0.0 160314 F51 0.2- 0.0 150122 F51 0.0 0.0 160116 F51 0.3- 0.1- 160314 F51 0.3+ 0.1- 150122 F51 0.1+ 0.0 160209 F51 0.2- 0.1- 160314 F51 0.1+ 0.1+ 150122 F51 0.0 0.1- 160209 F51 0.1- 0.1- 160314 K92 0.4- 0.5+ 150209 D29 0.4- 0.2+ 160209 F51 0.1- 0.0 160314 K92 0.1- 0.0 150209 D29 0.2- 0.2+ 160209 F51 0.1- 0.1- 160314 K92 0.2- 0.3+ 150209 D29 0.7- 0.3- 160304 F51 0.1- 0.0 160314 K92 0.0 0.3+ 150216 F51 0.1- 0.0 160304 F51 0.0 0.0 160315 568 0.0 0.1+ 150216 F51 0.1- 0.0 160312 F51 0.0 0.0 160315 568 0.1- 0.0 150311 G96 0.3+ 0.1+ 160312 F51 0.1+ 0.2- 160315 568 0.0 0.0 ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2016 Mar. 18

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