Nakano Note (Nakano wa Kangaeru noda) NK 5547 C/2025 E1 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 45 observations 2025 Jan. 3 to 2026 Jan. 12. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.33 arc second. See the previous orbits in CBET 5518 and NK 5471. Epoch = 2026 Oct. 7.0 TT T = 2026 Sept.23.71689 +/- 0.00257 (m.e.) TT Peri. = 274.42612 +/- 0.00074 Node = 344.58797 +/- 0.00004 (2000.0) Inc. = 69.05925 +/- 0.00009 q = 3.9980682 +/- 0.0000373 AU e = 0.9978562 +/- 0.0000135 1/a = +0.0005362 +/- 0.0000034 1/AU origin = +0.000642 (Q= 8) future = +0.000386 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2025/ 250303 807 0.1- 0.1- 250406 F52 0.2- 0.0 250103 F51 0.1- 0.4- 250303 807 0.0 0.1- 250406 F52 0.1- 0.0 250103 F51 0.0 0.3- 250303 807 0.1+ 0.0 251215 W68 0.4+ 0.1+ 250103 F51 0.1+ 0.0 250303 T14 0.1- 0.1+ 251215 W68 0.4+ 0.3+ 250104 F52 0.3- 0.1+ 250303 T14 0.0 0.1+ 251215 W68 0.3- 0.3- 250104 F52 0.1- 0.0 250303 T14 0.1- 0.1+ 251215 W68 0.6- 0.5- 250104 F52 0.1- 0.3- 250303 M45 0.0 0.0 2026/ 250104 F52 0.1- 0.0 250303 M45 0.2- 0.2+ 260111 W68 0.6+ 0.2- 250125 F52 0.9+ 0.4+ 250303 M45 0.4- 0.0 260111 W68 0.3- 0.8- 250125 F52 0.1+ 0.2+ 250304 X07 0.2- 0.2- 260111 W68 0.2+ 0.3+ 250302 F51 0.1- 0.0 250304 X07 0.1+ 0.0 260111 W68 0.1+ 0.7+ 250302 F51 0.0 0.1+ 250319 215 0.3+ 0.8+ 260112 W68 0.2- 0.6+ 250302 F51 0.1- 0.0 250319 215 0.2+ 0.4+ 260112 W68 0.2+ 0.5- 250302 F51 0.1- 0.1+ 250319 215 0.4- 1.4- 260112 W68 0.5- 0.3+ 250302 F51 0.0 0.1+ 250406 F52 0.7+ 0.2+ 260112 W68 0.0 0.1- 250303 807 0.0 0.0 250406 F52 0.4- 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2026 Feb. 9