Nakano Note (Nakano wa Kangaeru noda) NK 2200 P/2011 P1 (McNaught)
The following improved orbital elements, by S. Nakano, are from 119 observations 2011 Aug. 1 to 2012 Jan. 25. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.66 arc second. The comet has made a close approach (distance 0.000824 AU) to Jupiter on 2010 Dec. 4.6 UT. The previous perihelion passeges were 1995 June 19 and 2005 May 6. See an orbit in NK 2178. Epoch = 2012 Mar. 14.0 TT T = 2010 July 17.83010 +/- 0.05663 (m.e.) TT Peri. = 344.70452 +/- 0.00782 Node = 7.47274 +/- 0.00157 (2000.0) Inc. = 5.83908 +/- 0.00028 q = 4.9754792 +/- 0.0001918 AU e = 0.3421401 +/- 0.0000579 a = 7.5631288 +/- 0.0000961 AU n' = 0.04738619 +/- 0.00000090 P = 20.799 +/- 0.0003965 years (+/- 0.14 day) [ T = 1995 June 19.21710 TT Epoch = 1995 June 12.0 TT Peri. = 338.90704 e = 0.0600560 Node = 201.05112 (2000.0) a = 4.6335377 AU Inc. = 8.13045 n'= 0.09881776 q = 4.3552660 AU P = 9.974 years ] [ T = 2005 May 6.26930 TT Epoch = 2005 Apr. 20.0 TT Peri. = 335.16490 e = 0.0615068 Node = 200.82503 (2000.0) a = 4.6749892 AU Inc. = 8.13119 n'= 0.09750641 q = 4.3874456 AU P = 10.108 years ] The predicted orbit for the 2030 return is as follows: T = 2030 Dec. 19.84075 TT Epoch = 2030 Dec. 5.0 TT Peri. = 348.70879 e = 0.3276081 Node = 4.16397 (2000.0) a = 7.4989596 AU Inc. = 5.64708 n'= 0.04799572 q = 5.0422395 AU P = 20.535 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2011/ 110827 H06 0.4- 0.6+ 111031 372 1.1+ 0.0 110801 E12 0.1- 1.4- 110827 215 0.6- 0.0 111031 372 1.0+ 0.0 110801 E12 0.2+ 0.2+ 110827 215 0.4- 0.3- 111031 C10 0.6+ 0.3+ 110801 E12 0.3+ 0.2- 110827 215 0.3- 0.8- 111031 C10 0.4- 0.2+ 110801 E12 1.0- 1.3- 110828 H06 0.5- 0.8- 111031 C10 0.3- 0.1- 110801 E12 (0.6- 2.0-) 110828 H06 0.3- 0.7- 111101 704 0.5+ 1.7- 110802 H06 0.0 0.3- 110828 H06 0.1- 0.5- 111101 704 1.0+ 1.1+ 110802 H06 0.2- 0.0 110829 372 1.2+ 0.7+ 111101 704 1.3+ 0.7+ 110802 H06 0.7- 0.4+ 110829 372 1.6+ 0.8+ 111101 704 1.3- 1.7- 110802 E12 0.4+ 0.0 110920 C32 1.8+ 1.6+ 111102 691 0.3- 0.3+ 110803 470 0.2+ 0.8+ 110920 C32 0.0 0.2+ 111102 691 0.7- 0.4- 110803 470 0.7+ 0.6- 110920 C32 0.0 0.5+ 111102 691 1.0- 0.3+ 110803 E12 0.2+ 0.2- 110924 J01 0.4+ 0.7- 111102 D90 0.2- 0.3- 110803 E12 0.1+ 0.2- 110924 J01 0.0 0.6- 111102 D90 0.4+ 0.6- 110804 H21 (2.8- 2.1-) 110924 J01 0.6+ 0.2+ 111102 D90 1.2+ 0.7- 110804 H21 (3.4- 0.7-) 110925 H06 0.5+ 0.5+ 111115 C10 0.9- 0.7- 110804 H21 (2.8- 1.4-) 110925 H06 0.1- 0.3+ 111115 C10 0.8+ 0.3+ 110805 F65 0.0 0.3+ 111001 B51 (0.3- 3.8+) 111116 C10 0.9- 0.1+ 110805 F65 0.0 0.4+ 111001 B51 1.0- 0.4- 111116 B51 0.5+ 0.8- 110806 157 0.6+ 1.1+ 111003 130 0.3- 0.3- 111116 C10 1.5+ 0.3+ 110806 157 0.4+ 0.7+ 111003 130 0.5- 0.2- 111116 B51 1.6- 1.9+ 110807 I89 0.3- 0.4- 111003 130 0.6- 0.1- 111119 C10 0.1- 1.3- 110807 I89 0.4- 0.0 111005 F65 0.8+ 0.0 111119 C32 0.2+ 0.3+ 110807 H06 0.2+ 0.3- 111005 F65 0.7+ 0.6- 111119 C32 0.4+ 0.2+ 110807 H06 0.2- 0.3+ 111016 691 0.5- 0.8- 111119 C32 0.4- 0.4+ 110808 H06 0.4- 0.3+ 111016 691 0.2- 0.8+ 111119 C32 0.3+ 0.9+ 110808 H06 0.3- 0.5+ 111016 691 0.3- 0.7- 111119 C10 (0.9- 2.0-) 110808 H06 0.5- 0.7+ 111022 C32 (1.9+ 2.4+) 111122 372 0.3+ 0.8- 110809 H06 0.1- 0.0 111022 C32 0.6+ 1.6+ 111122 372 0.3+ 0.7+ 110809 H06 0.0 0.6- 111022 215 0.6- 0.4+ 111122 372 1.0+ 1.5+ 110809 E12 0.1- 0.1- 111022 215 0.2+ 1.7- 111123 704 (2.4+ 0.7-) 110810 A77 0.9- 0.7- 111022 C10 0.7- 0.2- 111123 704 (2.0+ 0.5+) 110810 A77 0.1+ 0.3+ 111022 C10 0.8- 0.3- 111123 704 0.6- 0.8+ 110810 C10 0.4- 0.9+ 111022 C10 0.2+ 0.8+ 111128 C10 0.3+ 0.4+ 110810 A77 0.2+ 0.0 111024 C10 0.1- 0.4+ 111128 C10 0.2+ 0.2- 110810 C10 0.9- 0.3+ 111024 C10 0.3- 0.6+ 111226 C32 0.3+ 1.0+ 110811 204 0.3- 0.0 111024 C10 0.4- 0.1- 111226 C32 0.2+ 0.5+ 110811 204 0.0 0.6- 111026 372 0.1- 0.3+ 111226 C10 0.6- 0.0 110825 F65 0.3+ 0.5- 111026 372 0.5+ 1.1+ 111226 C10 0.7- 1.2+ 110825 F65 0.3+ 0.1- 111028 703 0.2- 0.7- 2012/ 110825 F65 0.1+ 0.1- 111028 703 0.5- 0.3- 120125 215 0.0 1.7- 110826 H06 0.2+ 0.2+ 111028 703 1.3- 1.5- 120125 215 0.4- 1.3- 110826 H06 0.1- 0.3+ 111028 703 1.1- 0.4- 110827 H06 0.5+ 0.1+ 111031 372 0.6+ 0.1- ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2012 Feb. 6