Nakano Note (Nakano wa Kangaeru noda) NK 4651 415P/Tenagra
The following improved orbital elements, by S. Nakano, are from 192 observations 2013 to 2022. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.54 arc second. Residuals on 2022 observations were -13" mainly Right Ascension from a recent linked orbit in NK 4367 (= CBET 4918) with the delta-T correction = +0.025 day. The comet will pass 0.46 AU from Jupiter on 2033 Dec. 23 UT. See the previous orbits in NK 2899 and NK 4367 (= HICQ 2021). Epoch = 2021 Mar. 7.0 TT T = 2021 Feb. 15.38845 +/- 0.00642 (m.e.) TT Peri. = 346.29978 +/- 0.00114 Node = 160.29406 +/- 0.00002 (2000.0) Inc. = 31.79035 +/- 0.00003 q = 3.3141002 +/- 0.0000077 AU e = 0.1948576 +/- 0.0000018 a = 4.1161667 +/- 0.0000133 AU n' = 0.11802246 +/- 0.00000057 P = 8.351 +/- 0.0000406 years T = 2012 Oct. 11.58078 TT Epoch = 2012 Sept.30.0 TT Peri. = 345.98580 e = 0.1960381 Node = 160.36250 (2000.0) a = 4.1050678 AU Inc. = 31.81338 n'= 0.11850142 q = 3.3003181 AU P = 8.317 years The predicted orbit for the 2029 return is as follows: T = 2029 June 15.88403 TT Epoch = 2029 July 3.0 TT Peri. = 346.39128 e = 0.1961365 Node = 160.25671 (2000.0) a = 4.1019448 AU Inc. = 31.81865 n'= 0.11863678 q = 3.2974036 AU P = 8.308 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2013/ 201225 F52 0.1+ 0.1+ 210303 703 1.3- 1.7- 130216 691 0.7- 0.1- 2021/ 210303 703 0.6- 1.2- 130216 691 0.8- 0.8- 210111 F52 0.1+ 0.2- 210306 G96 0.1+ 0.0 130216 691 0.7- 0.3- 210111 F52 0.1- 0.2+ 210306 G96 0.2+ 0.2- 130303 926 0.1- 0.2- 210111 F52 0.3+ 0.1- 210306 G96 0.2+ 0.4- 130303 926 0.1+ 0.4- 210111 F52 0.1+ 0.0 210306 G96 0.1+ 0.1- 130303 691 0.6- 0.3- 210112 G96 0.2+ 0.2+ 210306 B96 (1.0- 3.7+) 130303 926 0.0 0.4- 210112 G96 0.1+ 0.2+ 210306 B96 0.3- 1.4+ 130303 691 0.2- 0.3- 210112 G96 0.1- 0.0 210307 T08 0.3- 0.1+ 130303 691 0.6- 1.0- 210112 G96 0.2+ 0.2- 210307 T08 0.3+ 0.4+ 130314 703 1.1- 0.4+ 210113 Z84 0.2+ 0.1+ 210307 T08 0.7+ 0.0 130314 703 0.1+ 0.8- 210113 Z84 0.2+ 0.2+ 210307 T08 0.4- 0.6- 130314 703 0.1+ 0.2+ 210113 Z84 0.2+ 0.4+ 210310 Q11 0.1- 0.2+ 130314 703 1.0- 0.5- 210114 Z84 0.0 0.0 210310 Q11 0.0 0.1+ 130314 703 1.4- 0.3- 210114 Z84 0.1+ 0.2+ 210310 Q11 0.0 0.3+ 130404 703 0.7- 1.8+ 210114 Z84 0.3+ 0.3+ 210311 Q21 1.4+ 0.7- 130404 703 (2.3- 0.3-) 210114 Z84 0.1+ 0.0 210311 Q21 (2.4+ 0.1-) 130404 703 1.0- 1.2+ 210116 F52 0.2+ 0.0 210312 D29 0.6- 0.2+ 130404 703 1.0- 1.0+ 210116 F52 0.3+ 0.1+ 210312 D29 0.4- 0.7+ 130410 G96 0.1- 0.7+ 210116 F52 0.2+ 0.0 210312 D29 0.3- 0.4- 130410 G96 0.4- 0.2+ 210116 F52 0.2+ 0.1- 210315 T08 0.2+ 0.4- 130410 G96 0.2- 0.4+ 210119 Q21 2.0- 1.1- 210315 T08 0.1- 0.9- 130410 G96 0.2+ 0.3+ 210119 Q21 0.2- 0.4+ 210315 T08 0.0 1.2- 130411 D29 0.1+ 0.5+ 210121 Q62 0.1- 0.3- 210315 T08 0.7+ 0.5+ 130411 D29 1.1+ 0.2+ 210121 Q62 0.3+ 0.1+ 210315 349 0.7+ 0.4- 130411 D29 0.1- 0.1- 210206 Q11 0.2+ 0.3+ 210315 349 0.5+ 0.3- 130411 D29 0.2- 0.6+ 210206 Q11 0.3+ 0.2+ 210319 T08 0.2+ 0.6- 130411 D29 0.2+ 0.5+ 210206 Q11 0.1+ 0.2+ 210319 T08 0.4+ 0.2- 130411 D29 0.4- 0.1+ 210207 G96 0.2+ 0.1- 210319 T08 0.4+ 0.5+ 130413 I41 0.2- 0.4+ 210207 G96 0.1+ 0.1- 210319 T08 1.3+ 1.3- 130413 I41 0.1- 0.6+ 210207 G96 0.0 0.2- 210320 G96 0.2+ 0.3- 130413 I41 0.1+ 0.4+ 210207 G96 0.0 0.3- 210320 G96 0.4+ 0.1- 130414 I41 0.1- 0.6+ 210208 X03 0.0 0.1+ 210320 G96 0.3+ 0.2- 130414 I41 0.2- 0.7+ 210208 X03 0.0 0.1+ 210320 G96 0.2+ 0.1- 130414 I41 0.1+ 0.9+ 210208 X03 0.1+ 0.0 210405 T08 0.5+ 0.1+ 130418 I41 0.0 0.6+ 210211 703 0.6- 0.8+ 210405 T08 1.0+ 0.4+ 130418 I41 0.1- 0.7+ 210211 703 0.8- 0.2+ 210405 T08 0.0 0.3+ 130418 I41 0.2+ 0.5+ 210211 703 1.5- 1.1+ 210405 T08 0.3+ 0.6- 130430 H06 0.2+ 1.1+ 210211 T08 0.1- 0.1- 210405 T08 0.6+ 0.7- 130430 H06 0.2- 0.7+ 210211 T08 0.1+ 0.0 210405 T08 0.1- 0.1+ 130502 H06 0.4+ 1.4+ 210211 T08 0.5+ 0.2- 210406 G96 0.3+ 0.4- 130502 H06 0.4+ 1.5+ 210211 T08 0.6- 0.0 210406 G96 0.2+ 0.1- 130502 H06 0.1+ 2.0+ 210212 A71 0.3- 0.2+ 210406 G96 0.0 0.2- 130503 F65 0.1+ 0.3+ 210212 A71 0.5- 0.0 210406 G96 0.3+ 0.1- 130503 F65 0.1+ 0.6+ 210213 F52 0.1+ 0.2- 210408 D29 0.4+ 0.1- 130503 F65 0.5+ 0.7+ 210213 F52 0.0 0.3- 210408 D29 0.1- 0.5- 130504 204 0.6+ 1.0+ 210213 F52 0.2+ 0.2- 210408 D29 0.0 0.4- 130504 204 0.9+ 0.8+ 210213 F52 0.4+ 0.1- 210408 K77 0.1+ 1.4- 130506 204 0.1- 0.9+ 210213 349 0.5- 0.1+ 210408 K77 0.5- 0.8+ 130506 204 0.8+ 1.3+ 210213 349 0.7- 0.1- 210411 F52 0.4+ 0.3- 130506 204 0.1+ 0.3+ 210214 215 0.1+ 0.1- 210411 F52 0.6+ 0.2- 130507 711 0.2+ 0.6+ 210214 215 0.2- 0.3- 210411 F52 0.5+ 0.3- 130507 711 0.3+ 0.3+ 210214 215 0.4- 0.6- 210411 F52 0.4+ 0.1+ 130507 711 0.3+ 0.5+ 210215 T08 0.4+ 0.1- 210416 215 0.4- 0.0 130507 711 0.2+ 0.2+ 210215 T08 0.7- 0.3- 210416 215 1.2- 0.9+ 130507 711 0.1+ 0.4+ 210215 T08 0.3- 0.3+ 210416 215 0.2- 0.8+ 130513 372 1.0+ 1.2+ 210215 T08 0.0 0.1- 210507 G96 0.9+ 0.1+ 130513 372 0.5+ 1.2+ 210217 I41 0.0 0.2- 210507 G96 0.6+ 0.1+ 130513 372 0.7+ 0.6+ 210217 I41 0.3+ 0.3- 210507 G96 0.8+ 0.5- 130514 215 (3.6- 2.8+) 210217 I41 0.2+ 0.2- 210507 G96 1.5+ 0.0 130514 215 (2.5- 1.9+) 210217 I41 0.5+ 0.2- 2022/ 130514 215 (2.3- 1.3+) 210217 T05 0.5- 0.2- 220203 F52 0.0 0.7- 2014/ 210217 T05 0.2- 0.4- 220203 F52 0.1- 0.2- 140517 C10(17.7+ 2.6-) 210217 T05 0.1- 0.2- 220203 F52 0.0 0.1- 140517 C10(19.0+ 1.7-) 210217 T05 0.1- 0.2- 220208 F52 0.0 0.3- 2020/ 210217 A77 0.4- 0.6+ 220208 F52 0.2+ 0.2+ 201225 F52 0.0 0.1+ 210217 A77 0.5- 1.0+ 220208 F52 0.5- 0.7- 201225 F52 0.1+ 0.2+ 210303 703 1.3- 1.0- 201225 F52 0.2+ 0.1+ 210303 703 0.1+ 1.5- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2022 Mar. 14