Nakano Note (Nakano wa Kangaeru noda) NK 1853 215P/NEAT

The following improved orbital elements, by S. Nakano, are from 126 observations 1994 to 2009. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.61 arc second. The 1994 observations were found by Maik Meyer (RunOff = 2" for NK 1747). See the previous orbits in NK 969, NK 1459 and NK 1747 (= HICQ 2009/2010). Epoch = 2010 June 13.0 TT T = 2010 June 8.04150 +/- 0.00083 (m.e.) TT Peri. = 222.45306 +/- 0.00014 Node = 75.44083 +/- 0.00008 (2000.0) Inc. = 12.78997 +/- 0.00001 q = 3.2133813 +/- 0.0000009 AU e = 0.2011131 +/- 0.0000002 a = 4.0223233 +/- 0.0000004 AU n' = 0.12217676 +/- 0.00000002 P = 8.067 +/- 0.0000011 years T = 1994 Apr. 6.25367 TT Epoch = 1994 Mar. 29.0 TT Peri. = 222.10386 e = 0.2007473 Node = 75.56082 (2000.0) a = 4.0199480 AU Inc. = 12.79734 n'= 0.12228507 q = 3.2129542 AU P = 8.060 years T = 2002 May 8.61758 TT Epoch = 2002 May 6.0 TT Peri. = 222.28145 e = 0.1992599 Node = 75.50162 (2000.0) a = 4.0330091 AU Inc. = 12.78566 n'= 0.12169151 q = 3.2293920 AU P = 8.099 years The predicted orbit for the 2019 return is as follows: T = 2019 Nov. 18.03511 TT Epoch = 2019 Nov. 13.0 TT Peri. = 262.02443 e = 0.1674849 Node = 56.69269 (2000.0) a = 4.3299787 AU Inc. = 10.58139 n'= 0.10938945 q = 3.6047725 AU P = 9.010 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1994/ 020804 474 0.2- 0.1- 030926 360 1.4- 1.1- 940911 260 1.5+ 0.5- 020804 474 0.0 0.3- 030926 360 (1.7- 2.4-) 940911 260 1.3+ 0.1+ 020805 644 0.4- 0.0 030930 360 0.4+ 0.3+ 941010 260 0.9+ 1.1+ 020805 644 0.6- 0.1+ 031002 360 0.6+ 0.1+ 941010 260 0.5+ 1.2- 020805 644 0.2- 0.2+ 031002 360 0.3- 0.1- 2001/ 020805 428 0.2- 0.1+ 031002 360 0.1+ 0.2+ 010522 691 0.8- 0.7+ 020805 428 0.1+ 0.0 031019 360 0.3+ 0.8+ 010522 691 0.6- 0.4+ 020807 360 0.5+ 0.2- 031019 360 0.6- 0.0 010522 691 0.9- 0.8+ 020807 360 0.0 0.5- 031024 360 0.2- 0.0 010611 691 0.2- 1.1+ 020807 360 0.2+ 0.5- 031024 360 0.3- 0.4+ 010611 691 0.6- 0.9+ 020807 213 1.6- 0.3+ 031024 360 0.9- 0.4+ 010611 691 0.0 0.3+ 020807 213 (0.3+ 2.2+) 031027 699 1.6- 0.4+ 2002/ 020807 213 (5.7- 2.1-) 031027 699 0.7+ 1.0+ 020516 608 0.0 0.3+ 020807 213 (2.3- 0.3-) 031027 699 1.1- 0.1+ 020516 608 0.9- 0.3- 020813 644 0.1- 0.3+ 031027 699 0.2- 0.4+ 020516 608 0.3- 0.2+ 020813 644 0.3- 0.3+ 031101 204 0.1+ 0.0 020705 704 0.2- 0.2- 020813 644 0.7+ 0.0 031119 204 1.0+ 1.3+ 020705 704 1.1- 0.3- 020813 322 0.3- 0.2- 2009/ 020705 704 1.1- 1.3- 020813 322 0.3- 0.5- 090122 H36 0.3+ 0.3- 020716 644 0.2- 0.2- 020813 322 0.7- 0.1+ 090122 H36 1.4+ 1.0+ 020716 644 0.0 0.1- 020813 170 1.0+ 0.9- 090202 H36 0.0 0.6+ 020716 644 0.4- 0.2- 020813 170 0.6+ 1.8+ 090202 H36 0.5- 0.9+ 020729 644 0.1- 0.0 020814 213 0.1- 0.1- 090203 850 0.2+ 1.2- 020729 644 0.1- 0.2+ 020814 213 (3.7- 0.2-) 090203 850 0.6- 0.1+ 020729 644 0.2+ 0.1+ 020814 213 0.3+ 0.6+ 090223 850 (6.5- 0.1+) 020803 644 0.3- 0.2- 020828 322 0.3+ 0.6- 090223 850 (5.2- 2.1+) 020803 644 1.1- 0.7+ 020828 322 0.4+ 0.2- 090303 850 1.8+ 0.1- 020803 644 0.2- 0.1+ 020828 322 0.6+ 0.5- 090303 850 0.4- 0.2+ 020803 620 1.3- 0.4- 020903 428 1.4+ 0.2+ 090324 291 0.2+ 0.5+ 020803 620 (2.5- 3.9-) 020903 428 1.2+ 0.2+ 090324 291 0.2- 0.6+ 020803 118 1.2- 0.6- 020908 360 0.7+ 0.1+ 090324 291 0.8+ 0.4- 020803 118 0.9- 0.4+ 020908 360 0.6+ 0.5- 090423 A13 0.8- 0.2+ 020803 118 1.1- 0.1- 020909 372 0.3+ 1.0+ 090423 A13 0.1+ 0.4- 020804 844 0.4- 0.3+ 020909 372 0.8+ 1.1+ 090425 B33 0.4+ 0.8- 020804 844 0.2- 1.1+ 020910 428 1.1+ 0.2+ 090430 204 0.3+ 0.3+ 020804 844 0.6- 0.1- 020910 428 1.3+ 0.0 090501 204 0.2+ 0.2+ 020804 844 0.9+ 0.4- 021008 322 (6.2+ 4.8-) 090504 J75 0.8- 0.6- 020804 734 0.1- 0.1- 021009 322 (2.5+ 1.9+) 090504 J75 0.2+ 0.2+ 020804 734 0.4+ 0.2- 021009 322 0.3+ 0.2- 090504 J75 0.6+ 0.1+ 020804 474 0.3- 0.3- 021009 322 (1.6- 5.0-) 090505 204 0.4+ 0.5+ 020804 474 0.1+ 0.3- 021026 704 0.9- 1.0- 090511 A13 0.7+ 1.2- 020804 474 0.1- 0.3- 021026 704 1.6+ 0.4- 090511 A13 0.7- 0.2- 020804 474 0.3+ 0.2- 021026 704 0.3+ 0.6+ 090516 A71 0.3+ 0.1+ 020804 474 0.2+ 0.2- 021026 704 (0.0 2.1-) 090518 J75 0.6+ 0.3- 020804 474 0.2- 0.2- 021106 360 0.5+ 0.3+ 090518 J75 0.2- 0.3+ 020804 428 0.6- 0.4+ 021106 360 0.9+ 0.1+ 090518 J75 0.8+ 0.3+ 020804 428 0.5- 0.2- 2003/ 090519 215 0.5+ 0.3- 020804 474 0.0 0.0 030926 360 0.1- 0.1+ ( ) -------- Rejected Obs.

Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2009 Oct. 1

Back to Nakano Note Page