Nakano Note (Nakano wa Kangaeru noda) NK 5085 C/2023 H2 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 146 observations 2023 Mar. 26 to Oct. 2. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.61 arc second. The comet will pass 0.19 AU from the Earth on 2023 Nov. 11 and 3.99 AU from Jupiter on 2023 Nov. 28 UT. Gonzalez gives m1 = 8.3 on 2023 Oct. 2.90 UT. See the previous orbits in CBET 5264 and NK 5063. Epoch = 2023 Oct. 23.0 TT T = 2023 Oct. 29.18765 +/- 0.00203 (m.e.) TT Peri. = 150.64922 +/- 0.00075 Node = 217.04363 +/- 0.00066 (2000.0) Inc. = 113.75300 +/- 0.00077 q = 0.8943947 +/- 0.0000286 AU e = 0.9963702 +/- 0.0000115 1/a = +0.0040583 +/- 0.0000128 1/AU origin = +0.004468 (Q= 7) future = +0.004326 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2023/ 230513 950 0.7- 0.7+ 230902 B50 (1.7- 3.3+) 230326 F51 0.7+ 0.2+ 230513 950 0.4- 0.5+ 230907 M09 0.7- 1.5+ 230326 F51 0.5+ 0.0 230513 950 0.0 0.2- 230907 M09 (2.3+ 1.3-) 230326 F51 0.4+ 0.3- 230515 A77 0.1+ 0.7+ 230907 M09 0.5- 0.1+ 230418 F52 0.0 0.0 230515 A77 0.4- 0.4- 230908 232 0.5- 1.0- 230418 F52 0.2- 0.1- 230515 A77 0.7- 0.1- 230908 M09 0.3- 0.6- 230418 F52 0.3- 0.1- 230516 204 0.2+ 0.1- 230908 M09 0.7+ 0.5- 230418 F52 0.2+ 0.1+ 230518 H36 0.7- 0.9- 230908 232 0.0 0.2- 230423 G96 0.1- 0.0 230518 H36 0.2- 0.8- 230908 M09 0.4- 1.1- 230423 G96 0.9- 0.1- 230518 H36 0.2+ 0.2+ 230909 A77 1.4+ 1.8+ 230423 G96 0.1- 0.1- 230519 W62 0.6- 0.1+ 230909 M09 1.2+ 0.5+ 230423 G96 0.4+ 0.5+ 230519 W62 0.2- 0.2- 230909 A77 0.5+ 1.3+ 230423 G96 0.1+ 0.0 230519 W62 0.7- 0.1- 230909 A77 0.3- 1.7+ 230423 G96 0.0 0.1+ 230519 B72 0.5- 0.2+ 230909 M09 0.0 0.3+ 230423 G96 0.2+ 0.3- 230519 B72 0.2+ 0.3+ 230909 M09 0.4- 0.2+ 230423 I52 1.1+ 0.1- 230521 G00 0.4- 0.8- 230918 G00 1.2+ 0.9+ 230423 I52 0.4+ 0.1- 230521 G00 0.4- 0.2- 230918 G00 0.6- 0.4- 230424 I52 0.2+ 0.4+ 230522 L06 0.7- 0.8- 230918 G00 0.3- 0.1- 230424 I52 0.4- 0.1+ 230522 L06 0.4- 0.4- 230923 A98 0.5+ 0.3+ 230424 I52 0.9- 0.6- 230524 Q11 0.4- 0.1+ 230923 A98 1.9+ 1.2- 230424 I52 0.4+ 0.3- 230524 Q11 0.3- 0.0 230923 A98 (2.1+ 0.2+) 230424 H21 0.3- 0.2- 230524 Q11 0.4- 0.1+ 230923 A98 0.5+ 0.1- 230424 H21 0.3- 0.2- 230606 215 0.2+ 0.4+ 230923 A98 0.7+ 0.7- 230424 H21 0.4- 0.0 230606 215 1.0+ 1.4- 230923 A98 0.6+ 0.2- 230424 G96 0.0 0.5- 230606 215 1.4+ 1.6- 230923 C23 0.7- 0.9- 230424 G96 0.3- 0.3+ 230611 G00 0.0 0.1+ 230923 C23 1.4- 0.2+ 230424 G96 0.0 0.5- 230611 G00 1.0+ 0.0 230923 C23 0.4- 0.1- 230424 G96 0.4+ 0.3+ 230611 G00 0.2+ 0.1- 230923 C23 0.7- 0.8- 230425 W62 0.2+ 0.0 230613 Z10 0.7+ 0.3- 230923 D95 (2.0- 0.3+) 230425 W62 0.1+ 0.3- 230613 Z10 (2.6+ 2.4-) 230923 D95 0.7- 0.7- 230425 W62 0.2+ 0.0 230616 Q11 0.3+ 0.5+ 230923 D95 1.2- 1.0- 230425 658 0.6+ 0.1+ 230616 Q11 0.1+ 0.3+ 230924 A77 0.6- 1.4- 230425 658 0.7+ 0.3- 230616 Q11 0.2+ 0.4+ 230924 A77 0.5- 0.8+ 230425 658 0.4+ 0.2+ 230628 G96 0.5- 0.0 230924 A77 0.6- 0.1- 230426 U94 0.7+ 0.1- 230628 G96 1.0- 0.3- 230924 A77 1.1- 0.2+ 230426 U94 0.2+ 0.3- 230628 G96 0.8- 0.3- 230924 A77 0.1- 0.4+ 230426 U94 0.3+ 0.4- 230628 G96 1.2- 0.1- 230924 349 0.3+ 0.0 230427 673 0.2- 0.1- 230716 Q11 0.8+ 0.4- 230924 349 0.1+ 0.2- 230427 673 0.2+ 0.3+ 230716 Q11 0.9+ 0.3- 230924 367 0.3+ 0.5+ 230428 L01 0.3- 0.2+ 230716 Q11 1.0+ 0.3- 230924 367 0.3- 0.6+ 230428 L01 0.5- 0.3+ 230805 U94 0.3- 0.6- 230924 349 0.4- 0.1- 230428 L01 0.7+ 0.3+ 230805 U94 1.1+ 0.9- 230924 349 0.1- 0.5- 230428 L01 0.2+ 0.2+ 230805 U94 0.7+ 0.3+ 230925 A77 (2.3- 4.6+) 230428 L01 0.1+ 0.1+ 230814 G00 0.8+ 0.3+ 230925 A77 (1.7+ 3.1+) 230506 695 0.4- 0.2+ 230814 G00 0.1+ 0.1- 230925 A77 (3.5+ 3.9+) 230506 695 0.3- 0.1+ 230814 G00 0.6- 0.8- 230926 A77 0.1+ 0.3- 230506 695 0.6- 0.2+ 230818 349 (2.1+ 0.1+) 230926 A77 1.0- 0.2+ 230509 G00 0.8- 1.2+ 230818 349 1.9+ 0.6+ 230926 A77 0.5+ 1.4+ 230509 G00 0.4- 1.7+ 230822 M09 0.2+ 0.5+ 230928 C23 (0.3- 2.3-) 230509 G00 0.4- 0.3+ 230822 M09 (2.5+ 0.5-) 230928 C23 0.6+ 0.1- 230511 W62 0.3- 0.3+ 230822 M09 0.6+ 0.5- 231002 349 0.8- 0.4- 230511 W62 0.1- 0.4+ 230902 B50 1.9+ 0.5- 231002 349 1.1- 0.1- 230511 W62 0.2- 0.5+ 230902 B50 1.2- 1.8+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2023 Oct. 6