Nakano Note (Nakano wa Kangaeru noda) NK 5074 207P/NEAT
The following improved orbital elements, by S. Nakano, are from 158 observations 2000 to 2023, including planetary perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas, Vesta, and non-gravitational effect of style II. The mean residual is +/- 0.60 arc second. Residuals on 2023 September observations were -15" for Right Ascension and -4" for Declination from the prediction by T. Kobayashi in NK 4756 with the delta-T correction = +0.005 day. See the previous orbits in NK 802, NK 1694 (= YC 2600) and NK 2514 (= NK 4756). Epoch = 2024 Feb. 20.0 TT T = 2024 Jan. 31.81518 +/- 0.00049 (m.e.) TT Peri. = 272.98478 +/- 0.00013 Node = 198.15840 +/- 0.00005 (2000.0) Inc. = 10.20096 +/- 0.00003 q = 0.9382298 +/- 0.0000008 AU e = 0.7583611 +/- 0.0000003 a = 3.8827768 +/- 0.0000055 AU n' = 0.12882212 +/- 0.00000027 P = 7.651 +/- 0.0000162 years A1 = +0.009 +/- 0.013 A2 = +0.00062 +/- 0.00004 T = 2001 Mar. 14.10540 TT Epoch = 2001 Apr. 1.0 TT Peri. = 271.02234 e = 0.7582906 Node = 200.79927 (2000.0) a = 3.8768557 AU Inc. = 10.15772 n'= 0.12911736 q = 0.9370725 AU P = 7.633 years T = 2008 Nov. 6.25519 TT Epoch = 2008 Oct. 21.0 TT Peri. = 271.17333 e = 0.7571411 Node = 200.67435 (2000.0) a = 3.8876510 AU Inc. = 10.15002 n'= 0.12857993 q = 0.9441505 AU P = 7.665 years [ T = 2016 July 1.28644 TT Epoch = 2016 June 21.0 TT Peri. = 271.28349 e = 0.7581803 Node = 200.54594 (2000.0) a = 3.8766533 AU Inc. = 10.16075 n'= 0.12912746 q = 0.9374510 AU P = 7.633 years ] The predicted orbit for the 2031 return is as follows: T = 2031 Oct. 3.68996 TT Epoch = 2031 Oct. 21.0 TT Peri. = 273.13459 e = 0.7574475 Node = 198.00964 (2000.0) a = 3.8939994 AU Inc. = 10.19354 n'= 0.12826562 q = 0.9444994 AU P = 7.684 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2000/ 010517 867 1.1- 0.4+ 081220 349 0.4+ 0.7- 001007 691 0.0 0.6- 010517 867 0.8+ 0.3- 081224 204 1.0- 0.2+ 001007 691 0.3+ 0.0 010517 402 (7.5+ 2.7-) 081224 204 0.0 0.2- 001007 691 0.2+ 0.0 010517 402 (1.3- 2.7-) 081226 J24 1.5+ 0.2- 2001/ 010517 402 (2.0- 0.7-) 081226 J24 0.8- 0.3+ 010511 608 0.5- 0.1+ 010517 402 0.6- 0.6+ 081227 349 0.4- 0.0 010511 608 0.5- 0.0 010519 360 0.7- 0.3- 081227 349 0.8- 0.3+ 010511 608 1.0- 0.7- 010519 360 0.6- 0.1+ 081228 A77(11.2- 4.8+) 010511 557 1.8+ 1.2- 010519 360 1.0- 0.6- 2009/ 010511 557 0.7+ 1.1- 010519 300 0.3+ 0.9+ 090101 349 (2.3- 1.1-) 010511 557 1.4- 0.8- 010519 300 (2.8+ 3.5-) 090101 349 1.6- 0.4- 010511 046 (3.8- 2.6+) 010519 046 (1.2+ 2.2-) 090110 349 0.0 0.9- 010511 046 (3.6- 1.2+) 010519 046 1.3+ 1.9- 090110 349 0.5- 0.2- 010511 046 1.9- 1.7- 010519 046 0.0 0.2- 090110 349 0.3+ 0.8- 010511 046 0.1- 1.7- 010519 046 1.1+ 0.2- 090418 291 0.4+ 0.5- 010511 046 0.4+ 1.6- 010520 608 0.5+ 0.4+ 090418 291 0.0 0.0 010512 649 0.2- 0.1- 010520 608 0.3+ 0.7+ 090418 291 0.1+ 0.3- 010512 649 0.7+ 0.1- 010520 608 0.6- 0.2- 090419 691 0.9- 0.0 010512 046 1.3+ 0.7- 010527 290 0.0 0.5+ 090419 691 0.2+ 0.3- 010512 046 0.7- 0.3+ 010527 290 0.4+ 0.7+ 090419 691 0.4- 0.7- 010512 046 (2.2- 0.0 ) 010527 290 0.0 0.6+ 090427 691 0.2+ 0.5- 010512 046 0.2+ 0.2- 2008/ 090427 691 0.7- 0.2+ 010512 118 (3.2- 0.1+) 081015 349 0.5- 0.1+ 090427 691 0.0 0.4- 010512 201 (2.1+ 1.3-) 081015 349 0.4- 0.1- 090516 G96 0.3+ 0.0 010512 118 0.6- 1.5- 081015 349 0.1+ 0.4- 090516 G96 0.2- 0.3- 010512 201 (6.0+ 1.1+) 081017 349 0.8+ 0.6+ 090516 G96 0.2- 0.1+ 010513 734 0.9+ 1.1- 081017 349 0.6+ 0.8+ 090522 204 0.6+ 0.0 010513 734 0.2- 1.3- 081017 349 0.3+ 0.9+ 2023/ 010513 734 (1.0- 2.6-) 081018 367 1.0- 0.1- 230814 A77 0.3- 0.5+ 010513 118 1.0+ 1.5- 081018 367 (2.4- 0.7+) 230815 A77 0.3- 0.9+ 010513 118 1.3+ 0.4+ 081018 349 0.4- 0.4+ 230815 A77 0.4+ 0.7+ 010513 118 0.2+ 0.5- 081018 349 0.3- 0.1+ 230815 A77 0.6- 1.6+ 010513 046 0.2+ 0.8+ 081018 349 0.0 0.2+ 230819 W62 0.7- 1.0+ 010513 046 (0.2- 2.0+) 081022 H06 1.1- 0.0 230819 W62 0.5- 0.7+ 010513 046 (0.8+ 2.4+) 081022 H06 0.7- 0.5- 230819 W62 0.6- 0.8+ 010513 046 (2.3- 2.0+) 081026 204 0.3- 0.0 230907 F51 0.1- 0.4- 010513 046 (4.6+ 2.4+) 081026 204 0.5- 0.1+ 230907 F51 0.1+ 0.1- 010514 649 0.2- 0.1- 081026 204 0.2- 0.1- 230907 F51 0.1+ 0.1- 010514 649 1.3+ 0.3- 081026 349 0.2+ 0.1+ 230907 F51 0.0 0.1- 010514 649 0.2+ 0.2- 081026 349 0.2+ 0.1- 230911 033 0.1+ 0.1- 010515 926 1.4- 1.3+ 081026 349 0.5+ 0.0 230911 033 0.2- 0.0 010515 926 (1.0- 2.0+) 081026 D80 (2.1+ 1.1+) 230911 033 0.1- 0.2+ 010515 926 1.5- 1.1+ 081026 D80 0.1+ 1.5+ 230915 W62 0.1- 0.3- 010515 926 0.7- 1.0+ 081105 349 0.3+ 0.1- 230915 W62 0.2- 0.0 010515 926 1.6- 1.3+ 081105 349 0.3+ 0.1- 230915 W62 0.2- 0.1+ 010516 608 0.2- 0.1+ 081105 349 0.5+ 0.2- 230916 215 0.1+ 0.1+ 010516 608 0.6- 0.6+ 081109 A71 1.1- 1.0+ 230916 215 0.6- 0.4+ 010516 608 0.7- 0.3- 081109 A71 1.0+ 0.8- 230916 215 0.7- 0.2- 010516 360 0.4- 0.7+ 081113 349 1.2+ 0.4- 230918 G96 0.2+ 0.1- 010516 360 0.7+ 0.9+ 081113 349 1.4+ 0.6- 230918 G96 0.0 0.4+ 010516 360 0.9+ 0.0 081113 349 1.4+ 0.7- 230918 G96 0.0 0.1- 010516 046 (0.4- 2.2+) 081121 349 0.1+ 0.9- 230918 G96 0.0 0.2- 010516 046 1.8+ 0.2- 081121 349 0.3+ 1.2- 230922 J43 0.3+ 0.2- 010516 046 0.9+ 1.8+ 081124 372 1.1+ 0.6- 230922 J43 0.4+ 0.5+ 010516 046 0.4+ 0.4+ 081126 204 0.4- 0.2- 230922 J43 0.1- 0.4- 010516 046 (2.5- 0.5+) 081126 204 0.2+ 0.4- 230923 F51 0.1- 0.2- 010516 046 1.4+ 0.7+ 081130 D80 1.1- 0.7- 230923 F51 0.0 0.1+ 010517 926 1.2+ 1.9- 081130 D80 0.6+ 1.0+ 230923 F51 0.1+ 0.0 010517 926 1.9- 1.3- 081130 D80 (2.1+ 0.2+) 230923 F51 0.1+ 0.1- 010517 926 1.3- 1.9+ 081130 D80 (2.7+ 0.2+) 230923 F51 0.1- 0.0 010517 926 0.4- 0.7+ 081202 349 0.4- 0.2- 230923 F51 0.1+ 0.1- 010517 926 0.3+ 1.1+ 081202 349 0.2- 0.4- 230923 F51 0.0 0.2- 010517 867 0.6- 0.2+ 081220 349 0.9+ 0.4- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2023 Oct. 4