Nakano Note (Nakano wa Kangaeru noda) NK 4350 A/2020 H9

The following improved orbital elements, by S. Nakano, are from 48 observations 2020 Apr. 22 to July 22. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.25 arc second. Epoch = 2019 Dec. 23.0 TT T = 2019 Dec. 21.10845 +/- 0.00436 (m.e.) TT Peri. = 312.81384 +/- 0.00090 Node = 213.11874 +/- 0.00008 (2000.0) Inc. = 137.85584 +/- 0.00036 q = 2.5778011 +/- 0.0000166 AU e = 0.9927017 +/- 0.0000737 1/a = +0.0028312 +/- 0.0000286 1/AU origin = +0.002921 (Q= 6) future = +0.003173 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 200430 V06 0.2+ 0.1- 200518 F65 0.7+ 0.2+ 200422 F51 0.1- 0.1- 200430 V06 0.3- 0.2- 200520 568 0.0 0.1- 200422 F51 0.0 0.1- 200502 F65 0.2- 0.2+ 200520 568 0.0 0.1- 200426 F51 0.0 0.3- 200502 F65 0.2+ 0.1- 200520 568 0.0 0.1- 200426 F51 0.1- 0.0 200502 F65 0.3+ 0.0 200616 568 0.0 0.1+ 200426 F51 0.2+ 0.2- 200502 F65 0.1+ 0.1+ 200616 568 0.1- 0.2- 200428 F51 0.1- 0.1+ 200511 Q62 0.9+ 0.1- 200616 568 0.1- 0.3+ 200428 F51 0.6+ 0.1+ 200511 Q62 1.3+ 0.1- 200616 568 0.1+ 0.0 200428 F51 0.4- 0.3+ 200513 474 0.3- 0.3- 200621 568 0.0 0.2- 200429 V06 0.0 0.0 200513 474 0.1- 0.1- 200621 568 0.0 0.0 200429 V06 0.0 0.3- 200513 474 0.3- 0.4- 200621 568 0.0 0.1- 200429 V06 0.1+ 0.2+ 200513 474 0.1+ 0.1+ 200621 568 0.0 0.0 200429 F51 0.1+ 0.1+ 200514 F52 0.2+ 0.2+ 200722 568 0.0 0.1+ 200429 F51 0.1- 0.1+ 200514 F52 0.3- 0.1+ 200722 568 0.0 0.0 200429 474 0.1- 0.3+ 200514 F52 0.2- 0.3- 200722 568 0.1+ 0.0 200429 474 0.1- 0.2+ 200514 F52 0.2+ 0.3+ 200429 474 0.2- 0.3+ 200518 F65 0.7+ 0.1- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2021 Jan. 8

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