Nakano Note (Nakano wa Kangaeru noda) NK 4068 P/2020 F1 (Leonard)
The following improved orbital elements, by S. Nakano, are from 98 observations 2002 to 2020. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.46 arc second. The obseravations on 2002 March 11/12 were found by K. Sarneczky. The comet has passed 0.0074 AU from Saturn on 1936 May 7 UT. Before this close approach, orbit was T= 1932 12 23.2, q= 9.019 AU , e= 0.200, Peri.= 228.4, Node= 70.1, Inc.= 2.0, a= 11.275 AU, P= 37.9 years. Also comet passed 0.91 AU from Jupiter on 1944 Feb. 4 and 0.69 AU from Saturn on 1995 Mar. 19 UT. Observations in 2002 show the residuals of +40" for Right Ascension and -13" for Declination from an orbit on CBET 4736 with the delta-T correction = -0.06 day. See orbits in CBET 4736 and CBET 4737 (this orbit). Epoch = 2019 Aug. 25.0 TT T = 2019 Aug. 29.32832 +/- 0.00549 (m.e.) TT Peri. = 8.70395 +/- 0.00075 Node = 136.65559 +/- 0.00012 (2000.0) Inc. = 5.43553 +/- 0.00002 q = 3.9831645 +/- 0.0000012 AU e = 0.4170313 +/- 0.0000002 a = 6.8325530 +/- 0.0000029 AU n' = 0.05518608 +/- 0.00000003 P = 17.860 +/- 0.0000113 years T = 2001 Sept.11.41207 TT Epoch = 2001 Sept. 8.0 TT Peri. = 8.56102 e = 0.4184671 Node = 136.63121 (2000.0) a = 6.8766217 AU Inc. = 5.42653 n'= 0.05465644 q = 3.9989819 AU P = 18.033 years The predicted orbit for the 2037 return is as follows: T = 2037 June 6.05350 TT Epoch = 2037 May 22.0 TT Peri. = 9.28568 e = 0.4140042 Node = 136.32308 (2000.0) a = 6.7742624 AU Inc. = 5.44745 n'= 0.05589990 q = 3.9696890 AU P = 17.632 years The following residuals in seconds of arc are from the above orbital elements: Residuals in seconds of arc 2002/ 200216 G96 0.7- 0.4+ 200318 Q64 0.1- 0.1- 020309 691 0.3- 0.2- 200216 G96 0.2- 0.5+ 200318 246 1.1- 0.6+ 020309 691 0.3+ 0.4+ 200216 G96 0.0 0.5- 200318 246 0.2+ 0.6+ 020309 691 0.0 0.3+ 200216 G96 0.2- 0.4- 200318 246 0.2+ 0.2- 020311 644 0.5- 0.7+ 200227 G96 1.6+ 1.1- 200318 246 0.4+ 0.1+ 020311 644 0.4- 0.2- 200227 G96 0.5- 0.0 200318 033 0.5- 0.2- 020311 644 0.6+ 0.1+ 200227 G96 0.2- 0.0 200318 033 0.3- 0.3- 020312 644 0.8+ 0.0 200227 G96 0.6- 0.2- 200318 033 0.3- 0.3- 020312 644 0.0 0.3+ 200316 G96 0.3- 0.0 200318 A44 0.2- 0.1- 020312 644 0.0 0.1+ 200316 G96 0.0 0.4+ 200318 A44 0.3- 0.1+ 2019/ 200316 G96 1.0- 0.1+ 200318 A44 0.8- 0.5+ 190103 F51 0.2- 0.2- 200316 G96 0.2- 0.2- 200319 L01 0.6- 0.4+ 190103 F51 0.3- 0.3+ 200316 G96 0.0 0.1+ 200319 L01 0.1+ 0.3- 190110 F51 0.0 0.1+ 200316 G96 0.4- 0.2+ 200319 L01 0.6- 0.2+ 190110 F51 0.0 0.0 200316 G96 0.2- 0.1- 200319 204 0.2- 0.2- 190110 F51 0.5+ 0.3- 200316 G96 1.0- 1.0+ 200319 204 0.5- 0.1- 191208 F52 0.3- 0.0 200316 G96 0.2- 0.1- 200319 246 1.4+ 1.3- 191208 F52 0.1- 0.2+ 200316 G96 0.4- 0.5+ 200319 246 0.5+ 0.7- 191208 F52 0.1- 0.0 200316 G96 0.0 0.6+ 200319 246 1.1+ 0.8- 191227 F51 0.1- 0.0 200316 G96 0.3- 0.0 200319 106 2.0- 1.7+ 191227 F51 0.3+ 0.1- 200317 I52 1.6- 0.5+ 200320 106 0.1+ 0.3- 191227 F51 0.2+ 0.2- 200317 I52 1.0- 0.4+ 200320 858 0.5+ 0.1- 2020/ 200317 I52 0.1- 0.0 200320 858 0.1+ 0.0 200123 F52 0.1+ 0.0 200317 Q62 0.1- 0.3+ 200320 J95 1.1- 0.2+ 200123 F52 0.1- 0.0 200317 Q62 0.2- 0.3- 200320 J95 0.3- 0.1+ 200123 F52 0.0 0.1+ 200317 033 0.3- 0.2- 200321 H36 0.0 0.1- 200123 F52 0.1+ 0.2+ 200317 033 0.1- 0.3- 200321 H36 0.7+ 0.2- 200125 F51 0.1+ 0.0 200317 033 0.4- 0.2- 200321 H36 0.4- 0.1- 200125 F51 0.2+ 0.0 200318 204 0.3- 0.2- 200321 H36 0.6- 0.2- 200125 F51 0.2+ 0.2- 200318 204 0.4- 0.1- 200323 F51 0.2+ 0.0 200125 F51 0.4- 0.2+ 200318 Q63 0.1- 0.2- 200323 F51 0.2+ 0.1- 200131 F51 0.0 0.0 200318 Q63 0.2- 0.1- 200323 F51 0.3+ 0.1- 200131 F51 0.3+ 0.2- 200318 Q63 0.6- 0.9+ 200323 F51 0.3+ 0.0 200131 F51 0.0 0.0 200318 Q64 0.3- 0.1+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2020 Mar. 28