Nakano Note (Nakano wa Kangaeru noda) NK 3822 C/2018 R3 (Lemmon)

The following improved orbital elements, by S. Nakano, are from 110 observations 2018 Aug. 8 to 2019 May 3. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.50 arc second. Residuals on 2019 Apr.-May observations were about +55" for Right Ascension and +30" for Declination from an orbit in HICQ 2019. Epoch = 2019 June 6.0 TT T = 2019 June 7.20021 +/- 0.00021 (m.e.) TT Peri. = 112.87627 +/- 0.00022 Node = 324.62534 +/- 0.00001 (2000.0) Inc. = 69.71467 +/- 0.00010 q = 1.2906191 +/- 0.0000053 AU e = 0.9993279 +/- 0.0000040 1/a = +0.0005208 +/- 0.0000031 1/AU origin = +0.000622 (Q= 8) future = +0.000694 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2018/ 180910 L27 0.3+ 0.1- 180915 K88 0.6- 0.6+ 180808 F51 0.2+ 0.1+ 180910 G40 0.1- 0.6+ 180915 K88 1.1- 0.4- 180808 F51 0.1- 0.3- 180910 G40 0.2- 0.6+ 180916 I52 0.0 0.2+ 180808 F51 0.0 0.0 180911 I52 0.0 0.5- 180916 I52 0.4- 0.2+ 180808 F51 0.0 0.0 180911 I52 0.1+ 0.9- 180916 I52 0.4- 0.3+ 180813 F51 0.0 0.1- 180911 I52 0.6- 0.0 180917 215 0.5- 0.1+ 180907 G96 0.4- 0.4- 180911 I52 0.4- 0.2- 180917 215 0.3- 0.3+ 180907 G96 0.1- 0.3+ 180911 595 0.1- 0.3+ 180917 215 0.1+ 0.8+ 180907 G96 0.1+ 0.1- 180911 595 0.6+ 0.1- 180927 Q11 0.3+ 0.7+ 180907 G96 0.1+ 0.2- 180911 104 1.3- 0.3- 180927 Q11 0.8+ 0.9+ 180907 G96 1.1+ 0.1- 180911 104 0.3+ 0.2+ 181001 372 1.3+ 0.7+ 180907 G96 0.5- 0.0 180912 A71 0.8- 0.0 181001 372 1.4+ 0.7+ 180907 G96 0.6- 0.7- 180912 A71 0.4+ 0.2+ 181007 Q11 0.9+ 0.6+ 180907 474 0.4- 0.0 180912 A71 0.3- 0.3- 181007 Q11 0.8+ 0.5+ 180907 474 0.0 0.2- 180913 926 0.2- 0.1+ 181008 461 1.4- 0.1+ 180907 474 0.2- 0.1- 180913 926 0.3+ 0.7+ 181008 461 1.0- 0.5+ 180907 474 0.1- 0.1- 180913 926 0.5- 0.8+ 181010 J22 1.2+ 1.0- 180908 I52 0.1+ 0.2- 180913 926 0.9+ 0.6+ 181010 J22 0.8+ 1.1- 180908 I52 0.7+ 0.5- 180913 926 0.5+ 0.0 181010 J22 0.8+ 0.9- 180908 I52 0.2- 0.5+ 180913 926 0.8- 0.4+ 181111 Q11 0.6- 0.4- 180908 I52 0.4- 0.1+ 180913 I52 0.3- 0.2+ 181111 Q11 0.4- 0.5- 180908 474 0.3- 0.1- 180913 I52 0.3- 0.1+ 2019/ 180908 474 0.1- 0.2- 180913 I52 0.5- 0.2+ 190403 H06 0.4+ 0.5+ 180908 474 0.6- 0.0 180913 I52 0.3+ 0.3- 190403 H06 0.0 0.0 180908 Q62 0.3- 0.2- 180913 C95 0.2+ 0.8- 190406 D95 0.1+ 0.0 180908 Q62 0.4- 0.1+ 180913 K63 (2.3+ 0.2-) 190406 D95 0.9+ 1.3- 180908 Q62 0.5- 0.0 180913 K63 1.3+ 0.6+ 190409 H06 0.3+ 0.1+ 180908 L01 0.3- 0.6+ 180913 K63 0.9+ 1.7+ 190409 H06 0.1- 0.2- 180908 L01 0.4- 0.1- 180913 C95 1.4+ 0.6- 190412 349 1.0- 0.0 180909 I52 0.1- 0.0 180915 711 0.3- 0.6- 190412 349 0.7- 0.5+ 180909 I52 0.0 0.0 180915 711 0.7- 0.6- 190421 C10 0.7- 0.4+ 180909 I52 0.3- 0.4+ 180915 711 1.0- 0.6- 190421 C10 0.6- 0.4+ 180909 I52 0.4- 0.7- 180915 I52 0.0 0.3+ 190501 H06 0.4+ 0.1- 180910 I52 0.3+ 0.7- 180915 I52 0.6+ 0.4+ 190501 H06 0.4+ 0.0 180910 I52 0.4- 0.0 180915 691 0.2- 0.0 190501 H06 0.7+ 0.1+ 180910 I52 0.5- 0.4+ 180915 I52 0.3+ 0.4+ 190503 349 0.2+ 0.2- 180910 L27 0.4+ 0.6- 180915 691 1.8+ 0.2- 190503 349 0.3- 0.5- 180910 L27 0.3+ 0.3- 180915 691 0.6- 0.3+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2019 May 10

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