Nakano Note (Nakano wa Kangaeru noda) NK 5556 C/2025 L1 (ATLAS)
The following improved orbital elements, by S. Nakano, are from 70 observations 2025 May 11 to 2026 Feb. 1. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.49 arc second. See the previous orbits in CBET 5566 and NK 5475. Epoch = 2025 Dec. 31.0 TT T = 2026 Jan. 12.73728 +/- 0.00062 (m.e.) TT Peri. = 341.25202 +/- 0.00036 Node = 208.10921 +/- 0.00011 (2000.0) Inc. = 114.13617 +/- 0.00002 q = 1.6796376 +/- 0.0000067 AU e = 1.0014694 +/- 0.0000081 1/a = -0.0008748 +/- 0.0000048 1/AU origin = +0.000005 (Q= 7) future = -0.000598 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2024/ 250609 X03 0.1- 0.6- 250708 W68 0.4+ 0.2+ 241001 F51 (0.1- 4.7-) 250609 X03 0.1- 0.5- 250708 W68 0.7+ 0.5+ 241001 F51 (0.2- 5.1-) 250609 X03 0.2- 0.6- 250708 W68 0.3- 0.2+ 241001 F51 (0.1- 5.3-) 250609 X07 0.2- 0.2- 250708 E62 0.5- 0.7+ 2025/ 250609 X07 0.3- 0.1- 250708 E62 0.3- 1.0+ 250511 W68 0.5- 0.3+ 250609 X03 0.1- 0.2- 250805 W68 0.4- 0.9+ 250511 W68 1.3+ 1.5- 250612 M22 0.5- 0.5- 250805 W68 0.3+ 0.4+ 250511 W68 0.8- 1.0- 250612 M22 0.4- 0.1- 250805 W68 0.9- 0.6+ 250513 M22 0.3- 0.2- 250612 M22 0.0 0.4+ 250805 W68 0.2- 0.6+ 250513 M22 0.5- 1.2- 250612 M22 0.2- 0.2+ 250812 M22 0.9- 0.5- 250517 W68 0.1+ 1.0+ 250618 W68 0.1- 0.4- 250812 M22 0.7- 0.4- 250517 W68 0.7+ 1.2- 250618 W68 0.4- 0.1- 250812 M22 1.0- 0.0 250517 W68 0.2- 0.5- 250618 W68 0.2- 0.6+ 250818 E62 0.1+ 0.3+ 250606 W68 0.5- 0.7- 250618 W68 0.6+ 0.2+ 250818 E62 0.0 0.1- 250606 W68 0.0 0.3+ 250702 M22 0.3- 0.2+ 250818 E62 0.5+ 0.0 250606 W68 0.5- 0.6+ 250702 M22 0.3+ 0.2+ 250818 E62 0.2- 0.0 250606 W68 0.2- 0.4+ 250702 M22 0.1- 0.3+ 250906 E94 1.3+ 0.0 250607 X09 0.3+ 0.0 250702 M22 0.3+ 0.1+ 250906 E94 0.8+ 0.0 250607 X09 0.0 0.2- 250704 W68 0.5- 0.8+ 250906 E94 0.5+ 0.2+ 250607 X09 0.5+ 0.0 250704 W68 0.1- 0.3- 2026/ 250607 X09 0.7+ 0.2+ 250704 W68 0.1- 0.2+ 260102 X07 0.7+ 0.1- 250608 L81 0.0 0.1+ 250704 W68 0.5+ 0.6+ 260102 X07 0.6+ 0.6- 250608 L81 0.2- 0.1+ 250707 X07 0.0 0.3+ 260201 349 0.7- 0.2- 250609 194 0.3- 0.1+ 250707 X07 0.2+ 0.5+ 260201 349 0.2- 0.3+ 250609 194 0.0 0.0 250707 X07 0.3+ 0.2+ 250609 194 0.2- 0.1+ 250708 W68 0.6+ 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2026 Feb. 16