Nakano Note (Nakano wa Kangaeru noda) NK 5048 P/LINEAR-Grauer (2010 TO20 = 2023 H6)
The following improved orbital elements, by S. Nakano, are from 85 observations 2009 to 2023. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.42 arc second. Residuals for the recovery observations were +4'.0 for Right Ascension and +1'.6 for Declination from the prediction in NK 2433 (= HICQ 2020 and later). The comet has passed 0.24 AU from Saturn on 1960 August and 0.35 AU from Jupiter on 2003 Aug. 26 and 0.075 AU from Jupiter too on 2009 Oct. 22 UT. Since these two close approaches, comet had a former orbit of T= 1979 Feb. 12, q= 5.844 AU, e= 0.329, Peri.= 191.2, Node= 321.0, Inc.= 1.8, a= 8.716 AU, P= 25.7 years. See an orbit in CBET 5283 (same orbit). Epoch = 2022 Dec. 7.0 TT T = 2022 Nov. 27.07024 +/- 0.00738 (m.e.) TT Peri. = 267.46333 +/- 0.00079 Node = 43.28223 +/- 0.00037 (2000.0) Inc. = 2.47874 +/- 0.00001 q = 5.5080382 +/- 0.0000100 AU e = 0.0556555 +/- 0.0000015 a = 5.8326579 +/- 0.0000140 AU n' = 0.06996878 +/- 0.00000025 P = 14.086 +/- 0.0000508 years T = 2005 Jan. 9.40661 TT Epoch = 2004 Dec. 21.0 TT Peri. = 353.26123 e = 0.1020765 Node = 200.49282 (2000.0) a = 6.0216206 AU Inc. = 1.20286 n'= 0.06670125 q = 5.4069546 AU P = 14.776 years The predicted orbit for the 2036 return is as follows: T = 2036 Nov. 24.77874 TT Epoch = 2036 Dec. 13.0 TT Peri. = 267.71539 e = 0.0548186 Node = 43.20154 (2000.0) a = 5.7775953 AU Inc. = 2.48166 n'= 0.07097140 q = 5.4608757 AU P = 13.887 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2009/ 101113 W91 0.5+ 0.2- 111026 H06 0.8- 0.5- 090714 I41 0.9+ 0.3+ 101113 W91 0.8+ 0.3- 111026 H06 1.2- 0.7- 090714 I41 0.8+ 1.4+ 101113 W91 0.5+ 0.2+ 111030 204 0.4+ 0.3+ 090723 I41 0.1- 0.3+ 101113 W91 0.1+ 0.1- 111030 204 1.5+ 0.7+ 090723 I41 0.0 0.3+ 101113 W91 0.6+ 0.1- 111030 G96 0.2+ 0.1- 090730 I41 0.2+ 0.2+ 2011/ 111030 G96 1.0- 0.5- 090730 I41 0.3- 0.3+ 111001 F51 0.3+ 0.0 111030 G96 0.7- 0.2+ 2010/ 111019 G96 1.0- 0.7- 111030 G96 0.3- 0.5- 100722 F51 0.3+ 0.3+ 111019 G96 0.5- 0.6- 111202 F51 1.1+ 0.2- 100722 F51 0.0 0.0 111019 G96 0.1+ 0.1+ 111202 F51 0.6+ 0.1- 100824 I41 0.7+ 0.2- 111019 G96 0.4- 0.1+ 111226 B18 1.4+ 0.4+ 100824 I41 0.4+ 0.4+ 111019 G96 0.4- 0.3- 111226 B18 0.8+ 0.2+ 100910 F51 0.2- 0.0 111019 G96 1.6- 0.4- 111226 B18 1.3+ 0.5- 100910 F51 0.3+ 0.2+ 111019 G96 0.0 0.2+ 2012/ 101001 704 0.7- 1.0+ 111019 G96 1.4- 0.2- 121115 C32 0.3+ 0.2+ 101001 704 0.6- 0.1- 111019 G96 (2.4- 0.2-) 121115 C32 0.0 0.2+ 101001 704 0.2+ 1.1- 111019 G96 1.2- 0.3- 121115 C32 0.6+ 0.3+ 101001 704 0.7+ 0.2+ 111019 G96 0.1+ 0.0 121117 C32 (4.5- 0.2+) 101007 704 0.6+ 0.5+ 111019 G96 0.5- 0.3+ 121117 C32 (2.9- 0.5-) 101007 704 0.6+ 1.0+ 111019 E10 0.5+ 0.2- 2023/ 101007 704 0.4- 1.0+ 111019 E10 0.8+ 0.5- 230420 I11 0.1+ 0.0 101007 704 0.2+ 0.5+ 111019 E10 0.8+ 0.3- 230420 I11 0.0 0.1- 101007 704 0.1+ 1.0+ 111020 G96 1.2- 0.5- 230420 I11 0.2+ 0.1+ 101009 595 0.5- 0.2+ 111020 G96 0.9- 0.2- 230420 I11 0.0 0.1- 101009 595 0.2- 0.4+ 111020 G96 1.1- 0.1+ 230420 I11 0.0 0.1- 101010 F51 0.2+ 0.2- 111020 G96 0.5- 0.1- 230420 I11 0.0 0.0 101010 F51 0.6+ 0.0 111020 F65 0.8+ 0.2+ 230420 I11 0.1- 0.1- 101010 595 0.1- 0.7+ 111020 F65 0.3+ 0.2+ 230420 I11 0.1- 0.1- 101010 595 0.1+ 0.4+ 111020 F65 0.6+ 0.8+ 230525 I11 0.0 0.1+ 101011 704 0.2+ 0.8+ 111021 215 (2.5- 3.6+) 230525 I11 0.1+ 0.0 101011 704 0.8- 0.5- 111021 215 (3.0- 0.3+) 230525 I11 0.0 0.0 101011 704 0.2+ 0.9+ 111021 215 (2.9- 0.1-) 101011 704 (2.0- 0.4-) 111026 H06 0.9- 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2023 Aug. 8