Nakano Note (Nakano wa Kangaeru noda) NK 4618 C/2020 H5 (Robinson)
The following improved orbital elements, by S. Nakano, are from 151 observations 2020 Apr. 22 to 2022 Jan. 12. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.50 arc second. 2022 observations show the residuals of 6" from an orbit in NK 4398. See the previous orbits in CBET 4767 and NK 4398. Epoch = 2020 Dec. 17.0 TT T = 2020 Dec. 12.27666 +/- 0.01587 (m.e.) TT Peri. = 326.41416 +/- 0.00076 Node = 210.64167 +/- 0.00004 (2000.0) Inc. = 70.21034 +/- 0.00006 q = 9.3453240 +/- 0.0000286 AU e = 0.9975552 +/- 0.0000216 1/a = +0.0002616 +/- 0.0000023 1/AU origin = +0.000122 (Q= 8) future = +0.000234 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 200518 T08 0.3+ 0.3- 210417 T05 0.0 0.7+ 200422 T05 0.8+ 1.0- 200518 T08 0.1+ 0.0 210417 T05 0.4+ 0.2+ 200422 T05 0.3+ 1.3- 200518 T08 0.8- 0.9+ 210417 T05 0.2+ 0.3- 200422 T05 0.2- 0.8- 200519 474 0.2+ 0.1- 210417 T05 0.6+ 0.0 200422 T05 (0.7+ 2.4-) 200519 474 0.1+ 0.0 210419 T08 0.1- 0.6- 200424 E94 0.6- 0.6+ 200519 474 0.1+ 0.1- 210419 T08 1.4+ 0.8- 200424 E94 0.6- 0.1+ 200519 474 0.1+ 0.2- 210419 T08 0.6+ 0.4- 200424 E94 0.4- 0.4- 200520 323 0.0 0.2- 210503 T05 0.5- 1.1+ 200424 E94 0.1+ 1.0- 200520 323 0.1- 0.3+ 210503 T05 0.1+ 0.2+ 200424 Q62 0.3- 0.1- 200611 Q62 0.1+ 0.1+ 210503 T05 0.6- 0.2- 200424 Q62 0.5- 0.1- 200611 Q62 0.4+ 0.1- 210503 T05 0.1+ 1.0- 200424 X31 0.7+ 0.2- 201218 Q62 0.5- 0.3+ 210517 T08 0.0 1.4+ 200424 X31 0.4+ 0.3- 201218 Q62 0.1- 0.5+ 210517 T08 0.7+ 0.5+ 200425 E94 0.3- 0.3+ 201218 Q62 0.2+ 0.8+ 210517 T08 0.2- 0.1- 200425 E94 0.4+ 0.4+ 2021/ 210517 T08 0.6- 0.1+ 200425 E94 0.4+ 0.1- 210117 T08 0.2- 0.8+ 210531 T05 0.1+ 0.7+ 200425 E23 0.7- 0.0 210117 T08 0.9- 0.4- 210531 T05 0.4+ 0.5- 200425 E23 0.9- 0.2+ 210117 T08 0.2- 0.2- 210531 T05 0.6+ 0.8- 200425 E23 0.5- 0.4- 210117 T08 0.9+ 0.4+ 210531 T05 0.1+ 0.3- 200426 323 0.0 0.4- 210208 X03 0.8+ 0.4- 210606 T08 0.2+ 0.2+ 200426 323 0.5+ 0.1+ 210208 X03 0.0 0.3- 210606 T08 0.6+ 0.4- 200428 E94 0.3+ 0.0 210208 X03 0.8- 0.1+ 210606 T08 0.4- 0.7+ 200428 E94 0.7- 0.7+ 210208 X03 0.2- 0.3+ 210606 T08 0.2- 1.3+ 200428 E94 1.8- 0.2+ 210208 X03 0.8- 0.3- 210612 T05 0.4- 0.5- 200428 474 0.3- 0.5- 210208 X03 0.1+ 0.1- 210612 T05 0.1+ 0.3+ 200428 474 0.3- 0.3- 210313 474 0.7- 0.5- 210612 T05 0.4+ 0.2+ 200428 474 0.1- 0.4- 210313 474 0.2- 0.4- 210612 T05 0.4+ 1.5+ 200428 474 0.2- 0.3- 210313 474 0.1+ 0.1- 210613 807 0.1+ 0.0 200428 E94 0.4- 0.4- 210313 474 0.3- 0.1- 210613 807 0.2- 0.4+ 200428 E94 0.4- 0.6- 210316 474 0.2- 0.1+ 210613 807 0.2- 0.1+ 200428 E94 0.0 0.6+ 210316 474 0.2+ 0.1+ 210613 807 0.0 0.1- 200428 323 0.1+ 0.8+ 210316 474 0.1- 0.6- 210613 Q62 0.9- 0.3- 200428 323 0.1+ 0.2+ 210316 474 0.4- 0.1- 210613 Q62 0.6- 0.2- 200429 323 0.6+ 0.4- 210318 T08 0.5+ 0.3+ 210614 T08 0.0 0.4- 200429 323 0.1+ 0.7+ 210318 T08 0.4- 0.1+ 210614 T08 0.3+ 0.8+ 200429 W88 1.2+ 0.3+ 210318 T08 0.2- 0.1+ 210614 T08 0.3- 0.1- 200429 W88 1.2+ 0.7+ 210318 T08 0.2+ 0.4+ 210614 T08 0.2- 1.0- 200430 X31 0.0 0.6+ 210320 T05 0.7- 1.0+ 210708 T08 0.2+ 0.7- 200430 W88 0.2+ 0.6- 210320 T05 0.1- 0.6- 210708 T08 0.7- 0.8- 200430 X31 0.7+ 0.0 210320 T05 0.7+ 0.3- 210708 T08 0.4+ 0.5- 200430 W88 0.2+ 0.5- 210320 T05 0.4- 0.3- 210708 T08 0.6- 0.1+ 200502 W88 0.0 0.1+ 210403 T08 0.5- 0.1- 2022/ 200502 W88 0.3+ 0.0 210403 T08 0.5+ 0.1+ 220101 215 (2.3- 1.3-) 200502 W88 0.0 0.0 210403 T08 0.1- 0.2- 220101 215 0.7- 1.0- 200502 E23 0.1- 0.2+ 210403 T08 0.1- 0.5+ 220101 215 1.2+ 0.3- 200502 E23 0.0 0.5+ 210408 F52 0.1- 0.9- 220101 Q11 0.1+ 0.0 200502 E23 0.3+ 0.3- 210408 F52 0.3- 0.0 220101 Q11 0.1+ 0.0 200511 Q62 0.5- 0.1+ 210408 F52 0.1+ 0.2+ 220101 Q11 0.1+ 0.1+ 200511 Q62 0.1+ 0.1+ 210411 T08 0.6+ 1.0+ 220112 T08 0.1+ 0.0 200514 Q62 0.1+ 0.3+ 210411 T08 0.4+ 0.3+ 220112 T08 0.5- 1.6- 200514 Q62 0.2+ 0.3+ 210411 T08 0.3- 0.2+ 220112 T08 0.8+ 0.7+ 200518 T08 0.8+ 0.6+ 210411 T08 0.1+ 0.2- 220112 T08 0.1- 1.1+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2022 Feb. 9