Nakano Note (Nakano wa Kangaeru noda) NK 4364 C/2020 Y2 (ATLAS)

The following improved orbital elements, by S. Nakano, are from 69 observations 2020 Mar. 25 to 2021 Jan. 6. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.40 arc second. The comet will pass 1.36 AU from Jupiter on 2023 Sept. 23 UT. See an orbit in CBET 4905 (same orbit). Epoch = 2022 June 30.0 TT T = 2022 June 17.72168 +/- 0.01467 (m.e.) TT Peri. = 266.10466 +/- 0.00062 Node = 26.51464 +/- 0.00007 (2000.0) Inc. = 101.29683 +/- 0.00033 q = 3.1325574 +/- 0.0000847 AU e = 0.9970350 +/- 0.0000291 1/a = +0.0009465 +/- 0.0000093 1/AU origin = +0.001545 (Q= 7) future = +0.000940 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 200522 G96 0.2- 0.1+ 210102 I52 0.0 0.6- 200325 F51 0.2+ 0.2+ 200522 G96 0.1+ 0.1+ 210102 T08 0.8+ 1.1+ 200402 G96 0.3- 0.2- 200522 G96 0.5+ 0.1+ 210102 T08 0.1+ 0.2- 200402 G96 0.3- 0.3- 200522 G96 0.3+ 0.0 210102 T08 0.3+ 0.8+ 200402 G96 0.4- 0.1+ 201215 703 1.1+ 0.4- 210102 T08 0.7- 0.0 200402 G96 0.1- 0.2+ 201215 703 0.2+ 0.2- 210103 H06 0.1- 0.3- 200423 G96 0.0 0.2- 201215 703 1.1- 0.6+ 210103 H06 0.4+ 0.5- 200423 G96 0.1+ 0.3- 201215 703 0.4- 1.7- 210103 T05 0.4+ 0.5+ 200423 G96 0.0 0.1- 201228 T08 0.3+ 0.3- 210103 T05 0.7+ 0.5- 200423 G96 0.1+ 0.1- 201228 T08 0.0 0.2- 210103 T05 0.2+ 0.5- 200429 F52 0.0 0.2- 201228 T08 0.1- 0.2- 210103 T05 0.4+ 0.5- 200429 F52 0.1- 0.1+ 201228 T08 0.7- 0.0 210104 W88 0.1- 0.2- 200429 F52 0.1+ 0.3- 201229 H06 0.5+ 0.6- 210104 W88 0.1- 0.3+ 200501 F52 0.1- 0.1- 201229 H06 0.1- 0.4- 210104 H06 0.5- 0.1- 200501 F52 0.0 0.0 201231 I47 0.6+ 0.4- 210104 H06 0.3- 0.4- 200501 F52 0.0 0.3- 201231 I47 0.2+ 0.7+ 210105 T08 0.6- 0.4- 200511 F52 0.0 0.1+ 2021/ 210105 T08 0.0 0.1+ 200511 F52 0.1+ 0.1- 210102 K93 0.3- 0.6- 210105 T08 0.3- 0.3+ 200516 F52 0.1+ 0.0 210102 K93 0.1- 0.3+ 210105 T08 0.1- 0.1+ 200516 F52 0.0 0.2+ 210102 K93 0.3- 0.4+ 210106 T08 0.2- 0.3+ 200521 F52 0.0 0.1+ 210102 K93 0.2- 0.5+ 210106 T08 0.2- 0.2+ 200521 F52 0.0 0.2+ 210102 K93 0.3+ 1.7+ 210106 T08 0.5+ 0.2+ 200521 F52 0.0 0.1+ 210102 I52 0.2+ 0.3+ 210106 T08 0.6- 0.1+ 200521 F52 0.1+ 0.0 210102 I52 0.4- 0.3+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2021 Jan. 10

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