Nakano Note (Nakano wa Kangaeru noda) NK 2464 P/2011 S1 (Gibbs)

The following improved orbital elements, by S. Nakano, are from 78 observations 2011 Sept. 6 to 2013 Feb. 5. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.49 arc second. See the previous orbits in HICQ 2012 and NK 2350. Epoch = 2014 Aug. 11.0 TT T = 2014 Aug. 27.06089 +/- 0.14155 (m.e.) TT Peri. = 193.54196 +/- 0.01048 Node = 218.89721 +/- 0.00060 (2000.0) Inc. = 2.68030 +/- 0.00003 q = 6.8936089 +/- 0.0002542 AU e = 0.2025186 +/- 0.0000468 a = 8.6442249 +/- 0.0000693 AU n' = 0.03878064 +/- 0.00000047 P = 25.415 +/- 0.0003055 years (+/- 0.11 day) The predicted orbit for the 2039 return is as follows: T = 2039 Nov. 2.44383 TT Epoch = 2039 Oct. 19.0 TT Peri. = 193.01591 e = 0.1997077 Node = 218.73708 (2000.0) a = 8.5881777 AU Inc. = 2.68503 n'= 0.03916089 q = 6.8730526 AU P = 25.168 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2011/ 110920 F65 0.4- 0.0 120917 G96 0.1- 0.3- 110906 F51 0.1- 0.1- 110920 F65 0.5+ 0.1- 120917 G96 0.3+ 0.1- 110906 F51 0.1- 0.2- 110921 E10 0.1- 1.1- 120921 G96 0.3- 0.0 110906 F51 0.0 0.1- 110921 E10 0.1+ 0.3- 120921 G96 0.3- 0.5- 110906 F51 0.1+ 0.0 110921 E10 0.1+ 0.4- 120921 G96 1.0- 0.0 110906 F51 0.1+ 0.1- 110923 H06 0.1+ 1.8- 120921 G96 0.6- 0.4- 110918 G96 0.3+ 0.8- 110923 H06 0.3+ 0.6- 120921 G96 0.2- 0.2- 110918 G96 0.9- 0.2- 110924 G96 0.7- 0.0 120921 G96 0.5- 0.0 110918 G96 0.2+ 0.1- 110924 G96 0.7- 0.2+ 120921 G96 0.1- 0.3+ 110918 G96 0.9- 0.1+ 110924 G96 1.3- 0.5+ 120921 G96 0.5- 0.2+ 110918 G96 1.0- 0.5- 110924 G96 0.3- 0.5- 120922 H06 0.4- 0.6- 110918 G96 0.6- 0.1+ 110924 G96 0.3- 0.2- 120922 H06 1.2- 0.0 110918 G96 0.0 0.4+ 110924 G96 0.0 0.1- 120922 H06 1.8- 0.6+ 110918 F51 0.3+ 0.0 110924 G96 0.2- 0.2- 121009 F51 0.2+ 0.1+ 110918 F51 0.3+ 0.2+ 110924 G96 0.5- 0.3- 121009 F51 0.1+ 0.1+ 110918 F51 0.3+ 0.1+ 110924 152 (0.5- 2.7-) 121009 F51 0.1+ 0.2+ 110918 F51 0.0 0.0 110924 152 0.0 0.2- 121009 F51 0.2+ 0.0 110918 F51 0.1+ 0.0 110924 152 1.5+ 1.3+ 121104 F51 0.1+ 0.2- 110918 F51 0.1+ 0.2+ 111003 C32 0.8+ 0.6+ 121104 F51 0.1+ 0.0 110919 G96 0.1- 0.7+ 111003 C32 1.1- 0.4+ 121104 F51 0.0 0.1- 110919 G96 0.3- 0.3+ 111028 C32 0.7- 0.4+ 121118 C32 1.1- 0.1- 110919 G96 0.4- 0.3- 111028 C32 (2.1- 0.2+) 121118 C32 0.2- 0.2- 110919 G96 1.1- 0.3- 111028 C32 1.2- 0.1- 121118 C32 0.7- 0.1+ 110920 807 0.3+ 0.9+ 111028 C32 1.4- 0.3- 2013/ 110920 807 0.3+ 0.8+ 111114 204(19.3- 5.6-) 130205 291 0.1- 0.3+ 110920 291 1.1- 0.3+ 111114 204(19.1- 4.8-) 130205 291 0.4- 0.7- 110920 291 0.1+ 0.4+ 2012/ 130205 291 1.0+ 0.4- 110920 291 0.9- 0.1+ 120917 G96 0.4- 0.5+ 110920 F65 0.4- 0.1+ 120917 G96 0.5- 0.4+ ( ) -------- Rejected Obs.

Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2013 Apr. 5

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