Nakano Note (Nakano wa Kangaeru noda) NK 2604 P/LINEAR (2002 AR2 = 2013 Y1)

The following improved orbital elements, by S. Nakano, are from 65 observations 2002 to 2013. 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 recovery observations show the residuals of +388" (R. A.) and +520"(Decl.) with delta-T correction = -0.68 day from the prediction in NK 883 (= HICQ 2013). Epoch = 2014 May 23.0 TT T = 2014 May 14.71747 +/- 0.00126 (m.e.) TT Peri. = 73.40554 +/- 0.00030 Node = 7.66805 +/- 0.00007 (2000.0) Inc. = 21.10450 +/- 0.00002 q = 2.0485965 +/- 0.0000020 AU e = 0.6164363 +/- 0.0000004 a = 5.3409545 +/- 0.0000014 AU n' = 0.07985015 +/- 0.00000003 P = 12.343 +/- 0.0000047 years T = 2002 Jan. 16.51783 TT Epoch = 2002 Jan. 6.0 TT Peri. = 73.66635 e = 0.6156333 Node = 7.84712 (2000.0) a = 5.3709859 AU Inc. = 21.10905 n'= 0.07918138 q = 2.0644280 AU P = 12.447 years The predicted orbit for the 2026 return is as follows: T = 2026 July 22.78738 TT Epoch = 2026 July 19.0 TT Peri. = 73.07531 e = 0.6176000 Node = 7.37707 (2000.0) a = 5.2970168 AU Inc. = 21.08790 n'= 0.08084572 q = 2.0255791 AU P = 12.191 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2002/ 020304 704 0.5- 0.5+ 130924 G96 0.3- 0.1+ 020106 704 0.2+ 0.2- 020304 704 1.0- 1.1+ 130924 G96 0.8- 0.3+ 020106 704 0.0 0.3- 020304 704 0.5- 0.4+ 130924 G96 0.9- 0.4- 020106 704 0.3+ 0.1+ 020405 557 0.7+ 0.0 131009 G96 0.3- 0.1- 020106 704 0.3- 0.1- 020405 966 0.4+ 1.3+ 131009 G96 0.4- 0.0 020106 704 0.3+ 0.0 020405 557 0.9+ 0.8+ 131009 G96 0.0 0.1+ 020108 704 0.4+ 0.2- 020405 966 0.1- 1.2+ 131009 G96 0.5- 0.1+ 020108 704 0.7- 0.2+ 020405 557 0.2+ 0.2+ 131009 G96 0.1+ 0.1+ 020108 704 0.5+ 0.7- 020406 696 0.2- 0.2+ 131009 G96 0.4- 0.1- 020108 704 0.8+ 1.6- 020406 696 0.2+ 0.0 131009 G96 0.0 0.0 020108 704 0.2+ 0.5- 020406 540 0.4+ 0.6+ 131009 G96 0.1+ 0.1+ 020108 704 0.3- 0.8- 020406 540 0.4- 0.3- 131127 H06 0.7+ 0.3- 020108 704 0.7+ 0.6+ 020406 540 1.1+ 0.8- 131127 H06 0.8+ 0.4- 020108 704 1.1+ 0.0 020406 966 0.0 0.4+ 131127 H06 0.6+ 0.9- 020109 704 0.6+ 0.0 020406 966 0.5+ 0.5+ 131202 Q62 0.0 0.0 020109 704 0.8+ 0.9- 020407 696 0.8- 0.3+ 131202 Q62 1.7+ 0.4+ 020109 704 (2.1+ 2.4-) 020407 696 0.5+ 0.4- 131225 291 0.2+ 0.1+ 020109 704 (1.6+ 2.6-) 020407 118 0.7+ 0.8+ 131225 291 0.1+ 0.3+ 020202 704 1.6- 0.2- 020407 118 0.0 1.0+ 131225 291 0.1+ 0.5+ 020202 704 1.3- 0.1- 2013/ 131226 291 0.2+ 0.3+ 020202 704 (2.6- 0.2-) 130914 691 0.6- 0.1- 131226 291 0.0 0.3+ 020225 704 0.1- 0.7+ 130914 691 0.3- 0.2- 131226 291 0.5+ 0.4+ 020225 704 0.2+ 0.4- 130914 691 1.4- 1.7+ 020225 704 0.2- 0.1+ 130924 G96 0.1- 0.3+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2014 Jan. 16

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