Nakano Note (Nakano wa Kangaeru noda) NK 4479 A/2020 M4

The following improved orbital elements, by S. Nakano, are from 63 observations 2020 June 13 to 2021 May 16. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.28 arc second. The object has passed 1.53 AU from Uranus on 2011 May 21, 3.96 AU from Saturn on 2019 May 26 and 2.23 AU from Jupiter on 2020 Jan. 1 UT. Epoch = 2020 Nov. 7.0 TT T = 2020 Nov. 23.68121 +/- 0.00619 (m.e.) TT Peri. = 104.62813 +/- 0.00063 Node = 348.62990 +/- 0.00009 (2000.0) Inc. = 160.12558 +/- 0.00001 q = 5.9524050 +/- 0.0000119 AU e = 0.9988091 +/- 0.0000103 1/a = +0.0002001 +/- 0.0000017 1/AU origin = +0.000349 (Q= 8) future = +0.000436 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 200625 H21 0.3+ 0.3+ 200713 F51 0.0 0.0 200613 F52 0.1- 0.2+ 200625 H21 0.2+ 0.2+ 200713 F51 0.1+ 0.2- 200613 F52 0.2+ 0.3- 200626 673 0.1+ 0.0 2021/ 200613 F52 0.0 0.2- 200626 673 0.4+ 0.6+ 210406 568 0.0 0.0 200613 F52 0.3- 0.4+ 200627 H21 0.1+ 0.1- 210406 568 0.1- 0.0 200613 F52 0.3+ 0.0 200627 H21 0.2+ 0.3- 210406 568 0.1- 0.0 200617 F52 0.0 0.0 200627 H21 0.3+ 0.2- 210409 F51 0.2+ 0.0 200617 F52 0.1- 0.1- 200627 673 0.0 0.2+ 210409 F51 0.1+ 0.0 200617 F52 0.0 0.1- 200627 673 0.3+ 0.2+ 210409 F51 0.1- 0.1- 200618 H21 0.5+ 0.4+ 200627 104 0.1- 0.6- 210409 F51 0.2- 0.1- 200618 H21 0.5+ 0.2- 200627 104 0.6+ 0.0 210411 V00 0.1+ 0.2- 200618 H21 0.1+ 0.2+ 200627 104 0.3- 0.6- 210411 V00 0.1- 0.2+ 200618 J04 0.3- 0.5- 200629 H21 0.4+ 0.1- 210411 V00 0.1+ 0.1- 200618 J04 0.3+ 0.7+ 200629 H21 0.0 0.2+ 210411 V00 0.1- 0.2+ 200620 568 0.0 0.1- 200710 F51 0.1+ 0.1+ 210414 F51 0.2+ 0.0 200620 568 0.0 0.1- 200710 F51 0.1- 0.1+ 210414 F51 0.0 0.1- 200620 568 0.0 0.0 200710 F51 0.0 0.1+ 210414 F51 0.1+ 0.2+ 200622 H06 1.5- 0.5- 200710 F51 0.0 0.2- 210414 F51 0.0 0.2+ 200622 H06 1.5- 0.2- 200711 568 0.0 0.0 210516 568 0.0 0.0 200624 H21 0.1+ 0.2+ 200711 568 0.1- 0.1- 210516 568 0.0 0.0 200624 H21 0.2+ 0.2+ 200711 568 0.0 0.0 210516 568 0.0 0.0 200624 H21 0.1- 0.1+ 200713 F51 0.0 0.0 ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2021 June 15

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