Nakano Note (Nakano wa Kangaeru noda) NK 5563 C/2026 A3 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 62 observations 2025 Nov. 29 to 2026 Mar. 26. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.84 arc second. The comet has passed 0.79 AU from Jupiter on 2026 June 21 UT. See an orbit in CBET 5677 (same orbit). Epoch = 2027 Oct. 2.0 TT T = 2027 Sept.30.73772 +/- 0.07412 (m.e.) TT Peri. = 239.10044 +/- 0.00937 Node = 307.00525 +/- 0.00025 (2000.0) Inc. = 157.43282 +/- 0.00105 q = 4.8050825 +/- 0.0003931 AU e = 1.0023410 +/- 0.0002237 1/a = -0.0004872 +/- 0.0000466 1/AU origin = +0.000104 (Q= 6) future = -0.000127 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2025/ 260206 G96 0.1- 0.2- 260317 691 0.2+ 0.1+ 251129 F52 0.1- 0.0 260213 F51 0.2- 0.2- 260318 L38 0.2- 0.5+ 251129 F52 0.1+ 0.4+ 260213 F51 0.4- 0.1- 260318 L38 0.2- 0.5+ 251129 F52 0.2+ 0.3+ 260213 F51 0.1- 0.2- 260321 B74 0.3+ 0.6- 251129 F52 0.2- 0.0 260213 F51 0.1- 0.0 260321 B74 0.1+ 0.1+ 251229 F52 0.3+ 0.2- 260313 691 0.1+ 0.2- 260321 B74 0.3+ 0.1- 251229 F52 0.2+ 0.2+ 260313 691 0.0 0.3- 260323 Q62 0.0 0.0 2026/ 260313 691 0.0 0.2+ 260323 Q62 0.4+ 0.1+ 260113 F51 0.1- 0.2- 260313 094 0.3- 0.2- 260323 587 0.0 0.1- 260113 F51 0.0 0.1- 260313 094 0.1- 0.1- 260323 587 0.0 0.2- 260113 F51 0.1+ 0.1- 260313 094 0.2+ 0.3+ 260323 587 0.1+ 0.1- 260114 G96 0.1- 0.2+ 260313 094 0.0 0.1+ 260324 U95 0.0 0.0 260114 G96 0.5- 0.2- 260314 U95 0.5- 0.8+ 260324 U95 0.2+ 0.5+ 260120 F51 0.1- 0.0 260314 U95 0.1+ 0.0 260325 T14 0.4- 0.1- 260120 F51 0.2+ 0.3+ 260314 U95 0.6+ 0.0 260325 T14 0.4- 0.1- 260120 F51 0.1+ 0.1- 260315 M45 0.3+ 0.3- 260325 T14 0.4- 0.1- 260120 F51 0.1+ 0.1+ 260315 M45 0.0 0.3+ 260326 I52 0.0 0.5- 260120 F51 0.2- 0.4- 260316 L06 0.8+ 0.3- 260326 I52 0.5- 0.1- 260120 F51 0.2+ 0.2- 260316 L06 0.3+ 0.2- 260326 I52 0.1- 0.1+ 260206 G96 0.3+ 0.4- 260316 L06 0.9+ 0.2- 260326 I52 0.5+ 0.3+ 260206 G96 0.0 0.1+ 260317 691 0.1- 0.0 260206 G96 0.1- 0.5+ 260317 691 0.7+ 0.1+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2026 Mar. 31