Nakano Note (Nakano wa Kangaeru noda) NK 4185 P/PANSTARRS (2013 O2)
The following improved orbital elements, by S. Nakano, are from 193 observations 2013 to 2020. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.64 arc second. Residuals for the recovery observations on 2020 July 30 were +88" for Right Ascention and +22" for Declination from the prediction in NK 2634 (= HICQ 2020) with the delta-T correction = -0.09 day. See the previous orbits in NK 2582 ans NK 2634. Epoch = 2021 May 26.0 TT T = 2021 May 22.61095 +/- 0.00230 (m.e.) TT Peri. = 214.30204 +/- 0.00048 Node = 207.14717 +/- 0.00006 (2000.0) Inc. = 13.31950 +/- 0.00002 q = 2.0960427 +/- 0.0000018 AU e = 0.4468088 +/- 0.0000006 a = 3.7890021 +/- 0.0000055 AU n' = 0.13363395 +/- 0.00000029 P = 7.375 +/- 0.0000162 years T = 2013 Dec. 16.37819 TT Epoch = 2013 Dec. 14.0 TT Peri. = 213.74492 e = 0.4390317 Node = 207.67452 (2000.0) a = 3.8254651 AU Inc. = 13.30640 n'= 0.13172788 q = 2.1459647 AU P = 7.482 years The predicted orbit for the 2028 return is as follows: T = 2028 Oct. 13.35256 TT Epoch = 2028 Sept.26.0 TT Peri. = 214.48761 e = 0.4464998 Node = 207.05852 (2000.0) a = 3.7939940 AU Inc. = 13.31242 n'= 0.13337029 q = 2.0999763 AU P = 7.390 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2013/ 131001 691 0.2- 0.1+ 131109 703 (2.3- 1.4+) 130716 F51 0.2+ 0.4+ 131001 691 0.6- 0.0 131109 703 1.5- 1.0+ 130716 F51 0.2+ 0.2+ 131001 691 1.0- 0.3- 131109 703 0.2+ 0.1+ 130716 F51 0.2+ 0.2+ 131001 691 0.3- 0.3+ 131109 D90 0.2+ 0.5- 130716 F51 0.2+ 0.2+ 131005 691 1.3- 0.1+ 131109 D90 1.5+ 1.3- 130717 H21 1.1- 1.0+ 131005 691 1.3- 0.2+ 131109 D90 0.5+ 1.8- 130717 H21 1.1- 0.8+ 131005 691 0.8- 0.4+ 131113 A24 0.2+ 0.1- 130717 H21 1.2- 0.6+ 131009 691 0.0 0.4- 131113 A24 1.0+ 0.0 130717 H21 1.5- 0.8+ 131009 691 0.2+ 0.2- 131118 585 0.5+ 0.2- 130718 807 0.3+ 0.4+ 131009 691 0.2- 0.0 131118 585 0.4+ 0.1- 130718 807 0.3+ 0.1- 131010 958 (1.1+ 2.5-) 131118 585 0.2+ 0.2- 130718 807 0.2- 0.2+ 131010 958 0.4- 0.3- 131118 585 0.5+ 0.4- 130721 I89 1.0- 0.8+ 131013 691 0.2- 0.5- 131118 585 0.7+ 0.6- 130721 I89 0.4- 0.8+ 131013 691 0.1- 0.3- 131126 130 0.6- 0.8- 130721 I89 0.2- 1.1+ 131013 691 0.1- 0.5- 131126 130 0.4- 1.2- 130724 Q62 0.0 0.9- 131013 349 0.4- 0.0 131127 F51 0.0 0.0 130724 Q62 0.1+ 0.2- 131013 349 1.2- 0.9+ 131127 F51 0.0 0.3- 130724 Q62 0.1- 0.4+ 131014 C32 0.2+ 0.0 131127 F51 0.0 0.2- 130725 H21 0.1- 1.3+ 131014 C32 0.5+ 0.0 131127 F51 0.0 0.2- 130725 H21 0.3- 0.6+ 131014 C32 0.8+ 0.3+ 131128 K25 0.3+ 0.2+ 130725 H21 0.7- 0.8+ 131015 A02 0.8+ 0.8- 131128 K25 0.1+ 0.2- 130725 H21 0.1+ 0.5+ 131015 A02 (3.1- 0.8+) 131129 213 0.3+ 0.4+ 130731 W96 0.2- 0.7+ 131023 691 0.1+ 0.1- 131129 213 1.1+ 0.7+ 130731 W96 0.8+ 0.3+ 131023 691 0.7- 0.2- 131129 213 1.2+ 0.8+ 130803 W96 (3.0+ 1.2+) 131023 691 0.5- 1.0+ 131201 349 0.5+ 0.0 130803 W96 0.0 0.7+ 131027 349 0.3- 0.7+ 131201 349 1.1+ 0.4+ 130806 H06 0.0 0.6+ 131027 349 0.1+ 0.1+ 131201 K25 0.7- 0.5+ 130806 H06 0.3+ 0.4+ 131027 D90 0.0 0.5+ 131201 K25 0.4- 0.0 130810 W96 0.7+ 0.8+ 131027 D90 1.3- 1.7- 131207 703 (0.9+ 3.6+) 130810 W96 1.1+ 0.2+ 131027 D90 0.7+ 0.1- 131207 703 0.4+ 1.2+ 130814 C32 (2.6- 0.3+) 131028 G96 1.0+ 0.1- 131207 703 0.6- 1.2+ 130814 C32 (2.0- 0.4+) 131028 G96 0.3+ 0.1+ 131207 703 0.2- 1.9+ 130814 C32 (2.3- 0.7+) 131028 G96 0.6+ 0.1+ 131222 D95 0.3+ 1.9+ 130831 349 1.5- 0.6- 131031 461 0.6+ 0.8- 131222 D95 0.4- 0.6+ 130831 349 1.1- 0.1- 131031 461 0.7+ 1.0- 131227 D90 0.1+ 0.1+ 130901 703 0.8- 0.9+ 131031 461 0.4+ 0.4- 131227 D90 0.6+ 0.7+ 130901 703 0.9- 0.1+ 131101 703 0.2+ 0.9- 131227 D90 0.7+ 0.7+ 130901 703 1.5- 0.9- 131101 703 0.8- 0.2+ 131227 130 0.5+ 0.4- 130901 703 (2.8- 1.4+) 131101 703 1.0- 0.4+ 131227 130 0.6- 1.4- 130904 215 0.1- 0.3+ 131101 703 1.0- 1.0+ 2014/ 130904 215 0.0 0.0 131101 703 0.7- 0.9+ 140126 Q62 0.9- 0.0 130904 215 0.3+ 0.1+ 131101 703 1.7- 0.2- 140126 Q62 0.7- 0.3+ 130904 A24 0.1- 0.4+ 131101 703 1.4- 0.1+ 140223 215 0.5- 0.6+ 130904 A24 0.4- 0.4+ 131102 J24 1.5+ 0.7- 140223 215 0.9- 0.6+ 130904 A24 0.0 0.4+ 131102 J24 0.0 0.4- 140223 215 0.3- 0.7+ 130904 A24 0.3+ 0.3+ 131102 J24 0.4+ 0.7+ 2020/ 130904 A24 0.7+ 0.3+ 131102 H45 0.6+ 1.0- 200730 G96 0.5- 0.5+ 130905 C10 0.6+ 0.3+ 131102 H45 0.5+ 0.6- 200730 G96 0.6- 0.5+ 130905 C10 1.1- 0.1- 131102 H45 0.1- 1.5- 200730 G96 0.4- 0.5+ 130905 A24 0.4+ 0.8+ 131102 H45 0.4+ 1.5- 200730 G96 0.4- 0.3+ 130905 A24 0.8- 1.1+ 131102 H45 0.1+ 1.1- 200813 G96 0.1- 0.4- 130905 561 0.6+ 0.4+ 131102 H45 0.1- 0.3- 200813 G96 0.6+ 0.3- 130905 561 0.5+ 0.7+ 131104 E07 0.5- 0.8- 200813 G96 0.1- 0.1+ 130905 561 0.9+ 0.2- 131104 E07 0.9+ 0.6- 200813 G96 0.4- 0.0 130905 561 0.8+ 0.5+ 131105 J24 0.6- 0.4- 200815 215 0.2+ 0.1+ 130910 A71 0.3- 0.3+ 131105 J24 0.4+ 0.0 200815 215 0.1+ 0.0 130910 A71 0.2+ 0.0 131105 J24 0.7+ 0.1- 200815 215 0.5- 0.1- 130912 G96 0.2+ 0.0 131108 W96 0.0 0.7- 200818 F52 0.1+ 0.3- 130912 G96 0.8- 0.1+ 131108 W96 0.5+ 0.6- 200818 F52 0.1+ 0.5- 130912 G96 0.0 0.6+ 131108 D95 0.6+ 1.1+ 200818 F52 0.1+ 0.1- 130912 G96 0.6+ 0.2+ 131108 D95 1.0+ 0.4+ 200818 F52 0.3+ 0.3- 130913 G96 0.2+ 0.3- 131109 691 1.6- 1.7+ 200819 T08 0.0 0.0 130913 G96 0.0 0.4- 131109 691 (0.4+ 2.2+) 200819 T08 0.1+ 0.6+ 130913 G96 0.7- 0.0 131109 691 0.9- 0.5+ 200819 T08 0.4- 0.4+ 130913 G96 (2.1- 0.0 ) 131109 G96 0.3- 0.2+ 200819 T08 0.3- 0.0 130927 900 0.8+ 0.3- 131109 G96 0.1+ 0.2+ 200823 T08 0.1+ 1.2+ 130927 900 1.4+ 0.9- 131109 G96 0.3- 0.0 200823 T08 0.7- 0.7- 131001 691 0.3- 0.0 131109 703 0.5- 0.3+ 200823 T08 0.3- 0.2+ 131001 691 0.0 0.1- 131109 G96 0.2- 0.0 200823 T08 0.6- 0.5- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2020 Sept. 3