Nakano Note (Nakano wa Kangaeru noda) NK 4150 C/2020 F5 (MASTER)
The following improved orbital elements, by S. Nakano, are from 122 observations 2020 Mar. 16 to June 6. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.53 arc second. The comet will pass 0.48 AU from Jupiter on 2022 Mar. 5 UT. As result, semi-major axis will be changed from 1740 AU (P= 72400 years; orgin value) to 155 AU (P= 1930 years; future value), but values are still uncertainty. See an orbit in CBET 4746. Epoch = 2021 Mar. 7.0 TT T = 2021 Mar. 24.14591 +/- 0.05321 (m.e.) TT Peri. = 311.05530 +/- 0.01519 Node = 350.62247 +/- 0.00319 (2000.0) Inc. = 51.70574 +/- 0.00039 q = 4.3261804 +/- 0.0005496 AU e = 1.0030125 +/- 0.0001313 1/a = -0.0006963 +/- 0.0000304 1/AU origin = +0.000576 (Q= 6) future = +0.006458 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 200406 Q38 0.1+ 0.8+ 200415 X03 0.1- 0.8+ 200316 K95 0.8+ 0.2- 200406 Q38 0.2+ 1.5- 200415 X03 0.1+ 0.3+ 200316 K95 0.3+ 0.1- 200406 Q38 1.6+ 0.9- 200415 X03 0.1- 0.3+ 200321 K95 1.7- 1.1+ 200406 Q62 0.1+ 0.0 200415 X03 0.0 0.3+ 200321 K95 1.6- 1.0+ 200406 Q62 0.1- 0.0 200415 X03 0.0 0.2+ 200322 K95 1.3- 1.0+ 200406 Q62 0.1+ 0.3- 200415 X03 0.1- 0.4+ 200323 K95 1.2- 0.6+ 200406 Q62 0.2+ 0.5- 200415 X03 0.0 0.2+ 200328 W92 0.5- 0.5+ 200406 Q62 0.1+ 0.7- 200417 I39 0.9- 0.9+ 200328 W92 1.4- 0.9+ 200406 Q62 0.0 0.3+ 200417 I39 1.2- 1.3+ 200328 W92 1.7- 0.9+ 200406 I48 0.0 0.5+ 200417 I39 0.1+ 0.3- 200405 W92 0.6+ 0.1- 200407 I48 0.1+ 0.2+ 200424 Q62 0.1- 0.2+ 200405 W92 1.2- 0.9+ 200407 I48 0.0 0.2- 200424 Q62 0.2- 0.1+ 200405 W92 0.7- 0.6+ 200407 I48 0.4- 0.3+ 200510 I39 1.2- 0.6+ 200405 Q62 0.4+ 0.6- 200407 I48 0.1+ 0.2+ 200510 I39 0.6- 1.7+ 200405 Q62 0.4+ 0.4- 200407 X31 0.3+ 0.6- 200512 I39 0.9- 0.7+ 200405 Q62 0.2+ 0.6- 200407 X31 0.2+ 0.4- 200512 I39 (0.1- 3.0+) 200405 Q62 0.5+ 0.5- 200407 I39 0.1+ 0.3+ 200512 I39 0.2+ 0.0 200405 Q62 0.6+ 0.2- 200407 X31 0.1- 0.2- 200512 I39 0.1- 0.5+ 200405 Q62 0.4+ 0.4- 200407 I39 0.4+ 0.4+ 200513 I39 0.8+ 0.5- 200405 Q62 0.4+ 0.3- 200407 I39 0.4+ 0.3- 200513 I39 0.1+ 0.1+ 200405 Q62 0.2+ 0.4- 200407 W88 0.2+ 0.4- 200513 I39 0.0 0.1+ 200405 Q62 0.2+ 0.2- 200407 W88 0.1+ 0.3- 200518 W88 0.1+ 0.6+ 200405 Q62 0.1+ 0.1- 200407 W88 0.2+ 0.2- 200518 W88 0.1- 0.1+ 200405 Q62 0.1+ 0.2- 200407 W88 0.4+ 0.5- 200521 323 0.1- 0.4+ 200405 Q62 0.3+ 0.4- 200407 W88 0.4+ 0.4- 200521 323 0.0 0.4+ 200405 Q62 0.1+ 0.3- 200407 W88 0.1- 0.3- 200522 E89 0.6+ 0.5+ 200405 I47 0.3+ 0.3+ 200407 W88 0.2- 0.1- 200522 E89 0.6+ 0.4+ 200406 I47 0.2+ 0.4+ 200407 W88 0.1+ 0.1- 200522 E89 0.5+ 0.4+ 200406 I47 0.1- 0.2+ 200407 W88 0.3+ 0.1- 200522 E89 0.1+ 0.3+ 200406 I47 0.1- 0.3+ 200407 I48 0.1+ 0.3- 200524 W88 0.2- 0.5+ 200406 X31 0.3+ 0.5- 200407 I48 0.2+ 0.2+ 200524 W88 0.2- 0.3+ 200406 I39 0.3+ 0.0 200407 I48 0.8+ 0.1+ 200524 W88 0.0 0.0 200406 X31 0.3+ 0.6- 200408 I48 0.0 0.3+ 200602 X03 0.2- 0.7- 200406 W88 0.0 0.3- 200408 I48 0.9+ 0.9- 200602 X03 0.2- 0.3+ 200406 X31 0.0 0.7- 200408 X31 0.1+ 0.6- 200602 X03 0.2- 0.2+ 200406 W88 0.1+ 0.3- 200408 X31 0.7+ 0.3+ 200602 X03 0.0 0.2+ 200406 I39 0.3- 0.3+ 200408 X31 0.3+ 0.3+ 200602 X03 0.1- 0.1+ 200406 W88 0.0 0.5- 200408 X02 0.2+ 0.8- 200606 Q62 0.6- 1.2- 200406 I39 0.2+ 0.5+ 200408 X02 0.3+ 0.8- 200606 Q62 0.7- 1.2- 200406 I47 0.1+ 0.1- 200408 X02 0.3+ 0.8- 200606 Q62 0.3- 1.3- 200406 I47 0.0 0.1- 200408 W88 0.1+ 0.1+ 200406 I47 0.0 0.3- 200408 W88 0.1+ 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2020 July 11