Nakano Note (Nakano wa Kangaeru noda) NK 4492 A/2021 E4

The following improved orbital elements, by S. Nakano, are from 70 observations 2020 Dec. 21 to 2021 June 11. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.30 arc second. Epoch = 2022 Apr. 11.0 TT T = 2022 Apr. 25.29220 +/- 0.01254 (m.e.) TT Peri. = 48.27254 +/- 0.00196 Node = 171.17383 +/- 0.00002 (2000.0) Inc. = 116.36269 +/- 0.00059 q = 4.6761993 +/- 0.0000843 AU e = 0.9932707 +/- 0.0000490 1/a = +0.0014390 +/- 0.0000105 1/AU origin = +0.001800 (Q= 7) future = +0.001838 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 210319 F52 0.2+ 0.2+ 210415 F51 0.2- 0.1+ 201221 F51 0.3- 0.1- 210319 F52 0.0 0.1- 210417 I52 0.3- 0.3- 201221 F51 0.7+ 0.0 210407 F51 0.2- 0.0 210417 I52 0.3+ 0.2- 201221 F51 0.0 0.0 210407 F51 0.1- 0.0 210417 I52 0.1+ 0.0 2021/ 210408 G96 0.1+ 0.9- 210417 Q62 0.0 0.0 210116 F52 0.2- 0.3+ 210408 G96 0.9+ 0.7- 210417 Q62 0.3- 0.0 210116 F52 0.2+ 0.3- 210408 G96 0.2+ 0.3+ 210508 Y00 0.7- 0.1+ 210116 F52 0.2- 0.2+ 210408 G96 0.1+ 0.0 210508 Y00 0.6- 0.3- 210116 F52 0.0 0.1+ 210408 G96 0.0 0.8- 210508 Y00 0.2+ 0.1+ 210206 F52 0.5- 0.1- 210408 G96 0.3+ 0.1- 210508 Y00 0.1+ 0.4+ 210206 F52 0.6- 0.5- 210408 G96 0.1+ 0.1- 210516 568 0.1- 0.0 210206 F52 0.1- 0.4+ 210409 I52 0.2- 0.2- 210516 568 0.1- 0.0 210212 F52 0.2+ 0.1- 210409 I52 0.2- 0.1+ 210516 568 0.1- 0.0 210212 F52 0.4+ 0.5+ 210409 I52 0.4+ 0.4- 210516 568 0.1- 0.0 210212 F52 0.2+ 0.3- 210409 I52 0.2- 0.1- 210531 695 0.1+ 0.1+ 210212 F52 0.2+ 0.1+ 210410 H01 0.1- 0.1+ 210531 695 0.3+ 0.2+ 210217 F52 0.5- 0.3- 210410 H01 0.1+ 0.1+ 210531 695 0.5+ 0.1- 210217 F52 0.0 0.2+ 210410 H01 0.1+ 0.1- 210606 568 0.1+ 0.0 210217 F52 0.2+ 0.2+ 210410 H01 0.2- 0.2- 210606 568 0.1+ 0.0 210307 G96 0.4- 0.3+ 210411 H01 0.1- 0.1+ 210606 568 0.1+ 0.0 210307 G96 0.2+ 0.3+ 210411 H01 0.2- 0.0 210611 691 0.6+ 0.1+ 210307 G96 0.1- 0.3+ 210411 H01 0.2- 0.1+ 210611 691 0.2+ 0.9+ 210307 G96 0.8+ 0.6- 210411 H01 0.1- 0.0 210611 691 (2.1+ 0.5+) 210319 F52 0.4+ 0.0 210415 F51 0.1- 0.0 210319 F52 0.2+ 0.6- 210415 F51 0.2- 0.1+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2021 June 24

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