Nakano Note (Nakano wa Kangaeru noda) NK 4070 P/PANSTARRS (2020 F4 = 2011 GN5)
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 +/- 0.60 arc second. Identification with 2011 GN5 and many pre-discovery observations in 2009, 2011, 2018, 2019 and 2020 found by R. Weryk. Also 2002 observations found by K. Sarneczky. The comet has passed 0.58 AU from Jupiter on 1999 Aug.16 and also will pass 0.99 AU from Jupiter on 2034 Apr. 5 UT. See CBET 4742 (same orbit). Epoch = 2019 Nov. 13.0 TT T = 2019 Nov. 30.45918 +/- 0.00274 (m.e.) TT Peri. = 54.52696 +/- 0.00060 Node = 98.12567 +/- 0.00020 (2000.0) Inc. = 8.52953 +/- 0.00002 q = 2.7379208 +/- 0.0000047 AU e = 0.3684421 +/- 0.0000011 a = 4.3351854 +/- 0.0000103 AU n' = 0.10919244 +/- 0.00000039 P = 9.026 +/- 0.0000323 years T = 2001 Nov. 10.56172 TT Epoch = 2001 Nov. 27.0 TT Peri. = 54.33541 e = 0.3697525 Node = 98.26161 (2000.0) a = 4.3201572 AU Inc. = 8.53982 n'= 0.10976269 q = 2.7227684 AU P = 8.979 years T = 2010 Nov. 12.81456 TT Epoch = 2010 Nov. 20.0 TT Peri. = 54.37211 e = 0.3682114 Node = 98.22370 (2000.0) a = 4.3393124 AU Inc. = 8.52800 n'= 0.10903670 q = 2.7415283 AU P = 9.039 years The predicted orbit for the 2028 return is as follows: T = 2028 Nov. 30.30546 TT Epoch = 2028 Dec. 15.0 TT Peri. = 54.74284 e = 0.3694652 Node = 98.04862 (2000.0) a = 4.3223810 AU Inc. = 8.52898 n'= 0.10967799 q = 2.7254117 AU P = 8.986 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2002/ 181212 F51 0.0 0.3- 200328 246 0.2+ 0.1- 020311 644 1.9+ 0.3+ 181212 F51 0.1+ 0.3- 200328 246 0.5- 0.8- 020312 644 1.4+ 0.3+ 181215 F51 0.2- 0.7+ 200328 246 0.8- 0.9- 020401 644 0.1+ 0.5+ 181215 F51 0.3- 0.2- 200328 246 0.8- 0.1+ 020401 644 1.5+ 0.1- 181215 F51 0.3- 0.2+ 200328 246 0.3- 0.1+ 020506 644 1.4+ 0.2- 181215 F51 0.4- 0.2+ 200329 Q62 0.0 0.2- 020506 644 0.3+ 0.2- 181229 F51 0.7+ 0.7- 200329 Q62 0.2+ 0.2- 2009/ 2019/ 200330 858 0.0 0.4+ 091224 F51 0.5- 0.3- 190106 F51 0.3+ 0.4+ 200330 858 0.5+ 0.1+ 091224 F51 0.3- 0.2- 190106 F51 0.1- 0.1+ 200330 246 0.5- 0.3+ 2011/ 190106 F51 0.2+ 0.4+ 200330 246 0.7- 0.9- 110111 F51 0.9- 0.6+ 191204 F51 0.9+ 0.5- 200330 246 0.8- 0.2+ 110111 F51 0.4- 0.2+ 191204 F51 1.2+ 0.5- 200330 246 1.5- 0.1- 110116 F51 0.8- 0.8+ 2020/ 200330 246 1.5- 0.7- 110313 F51 0.7- 0.5+ 200122 F52 0.3- 0.3- 200330 215 0.1+ 0.8- 110316 F51 0.8- 0.7+ 200122 F52 0.2+ 0.3- 200330 215 0.2- 0.1+ 110316 F51 0.5- 0.6+ 200122 F52 0.5+ 0.5- 200330 215 0.0 0.3- 110316 F51 0.5- 0.8+ 200122 F52 0.6+ 0.3- 200331 858 0.3+ 0.0 110402 G96 1.8- 0.5+ 200130 F52 0.0 0.2- 200331 858 0.2+ 0.2- 110402 G96 0.4- 0.1- 200130 F52 0.1- 0.7- 200331 858 0.3+ 0.3- 110402 G96 1.6- 0.6+ 200130 F52 0.1+ 0.3- 200331 673 0.1+ 0.6- 110402 G96 0.6- 0.1- 200324 F51 0.3+ 0.7- 200331 673 0.0 0.2- 110402 F51 0.8- 0.3+ 200324 F51 0.3+ 0.7- 200331 673 1.0- 0.7- 110402 F51 0.8- 0.4+ 200324 F51 0.3+ 0.6- 200401 C10 0.2+ 0.1- 110402 F51 0.4- 0.5+ 200324 F51 0.3+ 0.6- 200401 C10 0.2- 0.6- 110402 F51 0.9- 0.2+ 200324 L01 0.0 0.8- 200401 C10 0.3- 1.1- 110403 F51 0.6- 0.6+ 200325 L01 0.2+ 1.0- 200401 246 0.3- 0.6+ 110403 F51 0.4- 0.5+ 200325 G96 0.0 0.6- 200401 246 0.7- 0.7+ 110404 G96 0.9- 0.7+ 200325 G96 0.3+ 0.5- 200401 246 1.1+ 0.2- 110404 G96 0.9- 0.9+ 200325 G96 0.2- 0.6- 200401 246 1.1+ 0.2- 110404 G96 0.7- 0.2+ 200325 G96 0.5- 1.1- 200401 204 0.6- 1.0- 110404 G96 1.2- 0.1+ 200327 I93 0.2+ 1.0- 200401 204 0.5- 0.6- 2018/ 200327 I93 0.0 0.0 200404 673 0.8- 0.0 181212 F51 0.1- 0.2+ 200327 I93 0.1- 0.9- 200404 673 0.8+ 0.8- 181212 F51 0.2+ 0.4+ 200328 246 0.1- 0.4- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2020 Apr. 4