Nakano Note (Nakano wa Kangaeru noda) NK 5188 P/Spacewatch (2005 XR132)
The following improved orbital elements, by S. Nakano, are from 110 observations 2005 to 2021. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.37 arc second. See an orbit in CBET 5360 (same orbit). Epoch = 2020 Nov. 7.0 TT T = 2020 Nov. 26.95550 +/- 0.00006 (m.e.) TT Peri. = 240.92175 +/- 0.00003 Node = 265.39608 +/- 0.00003 (2000.0) Inc. = 14.46847 +/- 0.00000 q = 2.1372926 +/- 0.0000002 AU e = 0.4322784 +/- 0.0000000 a = 3.7646843 +/- 0.0000004 AU n' = 0.13493084 +/- 0.00000002 P = 7.305 +/- 0.0000012 years T = 2006 May 16.84264 TT Epoch = 2006 May 25.0 TT Peri. = 238.11049 e = 0.4218117 Node = 270.47557 (2000.0) a = 3.7538231 AU Inc. = 15.70731 n'= 0.13551687 q = 2.1704165 AU P = 7.273 years T = 2013 Aug. 11.28404 TT Epoch = 2013 Aug. 16.0 TT Peri. = 240.82749 e = 0.4336945 Node = 265.46614 (2000.0) a = 3.7563212 AU Inc. = 14.48383 n'= 0.13538171 q = 2.1272255 AU P = 7.280 years The predicted orbit for the 2028 return is as follows: T = 2028 Mar. 10.52852 TT Epoch = 2028 Mar. 10.0 TT Peri. = 240.94746 e = 0.4336750 Node = 265.33613 (2000.0) a = 3.7554502 AU Inc. = 14.47622 n'= 0.13542881 q = 2.1268054 AU P = 7.278 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 140602 F51 0.2- 0.1+ 210114 D29 1.6- 0.4- 051205 691 0.3- 0.2- 140602 F51 0.1- 0.3- 210114 D29 1.7- 1.1+ 051205 691 0.3- 0.3- 140602 F51 0.0 0.0 210405 D35 0.2+ 0.6+ 051205 691 0.3+ 0.2- 2019/ 210405 D35 0.5+ 0.3+ 051227 691 0.4+ 0.1- 191105 F52 0.1+ 0.0 210405 D35 0.4+ 0.4+ 051227 691 0.1+ 0.0 191105 F52 0.0 0.1- 210405 D35 0.5+ 0.2+ 051227 691 0.0 0.0 191105 F52 0.0 0.1- 210407 F52 0.1+ 0.1+ 2012/ 191105 F52 0.4- 0.1+ 210407 F52 0.2+ 0.0 121113 691 0.3- 0.4- 2020/ 210407 F52 0.1+ 0.1- 121113 691 0.4- 0.0 201212 703 1.1- 0.6+ 210407 204 0.2+ 1.1- 121113 691 0.3+ 0.8- 201212 703 (2.7- 2.1+) 210407 204 1.3- 0.9- 121122 691 0.2- 0.4- 201215 F51 0.1- 0.2+ 210407 L81 0.0 0.0 121122 691 0.6+ 0.5- 201215 F51 0.0 0.1+ 210407 L81 0.0 0.0 121122 691 0.2- 0.5- 201215 F51 0.0 0.0 210407 L81 0.2- 0.2+ 121211 G96 0.3+ 0.3+ 201215 F51 0.1- 0.1- 210409 G96 0.3+ 0.0 121211 G96 0.6+ 0.3+ 201217 F51 0.0 0.0 210409 G96 0.1- 0.5+ 121211 G96 0.4+ 0.1- 201217 F51 0.0 0.0 210409 L81 0.2+ 0.1+ 121211 G96 0.7+ 0.1+ 201217 F51 0.0 0.0 210409 L81 0.1- 0.0 2014/ 201217 F51 0.0 0.1- 210410 H01 0.2+ 0.1- 140428 W84 0.0 0.0 201221 F51 0.1- 0.1+ 210410 H01 0.1+ 0.2- 140428 W84 0.1- 0.1+ 201221 F51 0.3- 0.1+ 210410 H01 0.1+ 0.1+ 140428 W84 0.1- 0.1+ 201221 F51 0.0 0.0 210410 H01 0.1- 0.0 140429 W84 0.2- 0.1- 201222 G96 0.3- 0.4+ 210411 Q62 0.0 0.2+ 140429 W84 0.1- 0.1+ 201222 G96 0.5- 0.5+ 210411 Q62 0.1- 0.1+ 140429 W84 0.1- 0.1+ 201222 G96 0.6- 0.1+ 210411 Q62 0.1+ 0.3+ 140429 W84 0.2- 0.0 201222 G96 0.0 0.3+ 210417 F51 0.1+ 0.1- 140429 W84 0.0 0.1+ 201222 F52 0.1+ 0.1- 210417 F51 0.2+ 0.1- 140502 W84 0.1- 0.0 201222 F52 0.1+ 0.1- 210417 F51 0.2+ 0.2- 140502 W84 0.1- 0.1+ 201222 F52 0.0 0.0 210420 G96 0.2- 0.0 140502 W84 0.1- 0.0 201222 F52 0.0 0.0 210420 G96 0.3+ 0.3- 140505 W84 0.1- 0.1+ 2021/ 210420 G96 0.0 0.2+ 140505 W84 0.1- 0.0 210107 I41 0.3- 0.4- 210420 G96 0.0 0.1- 140505 W84 0.0 0.0 210107 I41 0.4- 0.2- 210514 F51 0.0 0.1- 140505 W84 0.1- 0.1+ 210109 I41 0.1- 0.1+ 210514 F51 0.1+ 0.0 140505 W84 0.1- 0.1+ 210109 I41 0.3- 0.2+ 210514 F51 0.1+ 0.1- 140523 F51 0.1+ 0.2- 210113 D29 0.5- 0.6+ 210514 F51 0.0 0.1- 140523 F51 0.1- 0.1+ 210113 D29 1.8- 1.6+ 210514 F51 0.1- 0.1+ 140523 F51 0.1- 0.1+ 210113 D29 1.4- 1.4+ 210514 F51 0.1+ 0.1- 140602 F51 0.0 0.0 210114 D29 0.8- 0.7+ 210514 F51 0.1+ 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2024 Feb. 29