Nakano Note (Nakano wa Kangaeru noda) NK 5605 P/Skiff (2005 S2 = 2025 OZ695)
The following improved orbital elements, by S. Nakano, are from 94 observations 2004 to 2025. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.56 arc second. No correction was required for the orbit in HICQ 2007 (Similar orbit in NK 1283). The comet will pass 2.71 AU from Saturn on 2029 Sept. 25 UT. See the previous orbit in NK 1283 (= YC 2489) and CBET 5713 (same orbit). Epoch = 2029 Jan. 24.0 TT T = 2029 Jan. 20.40249 +/- 0.36557 (m.e.) TT Peri. = 229.84397 +/- 0.02192 Node = 161.17323 +/- 0.00032 (2000.0) Inc. = 3.14066 +/- 0.00003 q = 6.4032825 +/- 0.0002360 AU e = 0.1974047 +/- 0.0000327 a = 7.9782206 +/- 0.0004384 AU n' = 0.04373660 +/- 0.00000361 P = 22.535 +/- 0.0018575 years (+/- 0.68 day) T = 2006 June 27.50742 TT Epoch = 2006 July 4.0 TT Peri. = 229.71747 e = 0.1964672 Node = 161.26715 (2000.0) a = 7.9642076 AU Inc. = 3.14072 n'= 0.04385208 q = 6.3995019 AU P = 22.476 years The predicted orbit for the 2051 return is as follows: T = 2051 June 1.66689 TT Epoch = 2051 May 29.0 TT Peri. = 229.43032 e = 0.2021829 Node = 160.84679 (2000.0) a = 7.8965041 AU Inc. = 3.15316 n'= 0.04441726 q = 6.2999661 AU P = 22.190 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2004/ 050930 213 0.3+ 0.9- 051005 850 0.7- 0.3+ 040907 691 0.2- 0.6+ 050930 213 0.5+ 0.5- 051005 850 1.7- 0.9- 040907 691 0.7- 0.5+ 050930 213 0.5+ 0.4- 051008 A50 0.8- 0.6- 040907 691 0.4- 0.5+ 050930 213 0.8+ 0.4- 051008 A50 0.4+ 0.7+ 040923 691 0.0 0.2+ 050930 213 0.7+ 0.3- 051008 A50 0.5+ 0.2- 040923 691 0.0 0.2+ 051001 691 (3.5+ 1.1-) 051008 A50 0.6- 0.9- 040923 691 0.2- 0.3+ 051001 691 0.3+ 0.3+ 051010 691 0.5+ 0.4+ 041110 695 0.2+ 0.3+ 051001 850 (2.0+ 2.0+) 051010 691 0.4+ 0.5+ 041111 695 0.3+ 0.5+ 051001 691 0.5+ 0.2+ 051010 691 0.5+ 0.5+ 2005/ 051001 850 (2.2- 2.1+) 051011 152 1.1+ 0.0 050925 691 0.4- 0.1+ 051001 372 0.5- 0.6- 051011 152 0.6- 1.7- 050925 691 0.2+ 0.1+ 051001 372 0.2+ 0.4+ 051011 152 0.5- 0.2- 050925 691 0.3+ 0.0 051001 213 0.2+ 1.3+ 051011 152 0.7- 0.9- 050929 699 1.5- 0.4- 051001 213 0.1+ 1.3+ 051026 215 0.2- 0.2+ 050929 699 0.3- 1.1- 051001 213 0.2+ 1.1+ 051027 699 0.3- 1.2+ 050929 699 0.5- 1.4- 051001 213 0.1+ 1.2+ 051027 699 1.5+ 0.5- 050929 699 0.7- 0.9- 051001 213 0.1+ 1.0+ 051027 699 0.4- 0.7- 050929 A50 0.5- 0.9+ 051001 213 0.1+ 1.1+ 051027 699 1.6- 0.2+ 050930 673 0.3+ 0.2+ 051001 941 0.5+ 0.4+ 051028 G96 0.7+ 0.1- 050930 673 0.4+ 0.1+ 051001 941 0.4+ 0.3+ 051028 G96 0.7+ 0.2+ 050930 699 (2.9- 1.0-) 051001 941 0.3+ 0.2+ 051028 G96 0.1+ 0.2- 050930 673 0.3+ 0.1- 051002 941 0.1+ 0.8- 051028 G96 0.3- 0.2- 050930 673 0.3+ 0.2+ 051002 941 0.6+ 0.4- 051029 A32 1.5+ 0.2- 050930 699 0.4- 0.1+ 051002 941 0.6+ 0.2- 051029 A32 0.9+ 0.3+ 050930 G96 0.9+ 0.4+ 051003 850 0.3+ 0.2- 051108 A32 0.8- 0.7- 050930 G96 0.4+ 0.6+ 051003 850 1.5- 0.8- 051108 A32 0.3- 0.1- 050930 G96 0.4+ 0.7+ 051003 850 0.3- 0.5+ 2025/ 050930 G96 0.5+ 0.6+ 051003 850 0.1- 0.2- 250719 X05 0.1+ 0.1- 050930 699 1.0- 1.1- 051003 850 0.4+ 1.2- 250719 X05 0.2+ 0.1+ 050930 699 1.9- 1.1- 051004 850 0.2+ 0.1+ 250722 X05 0.3- 0.1- 050930 J87 0.3- 0.2+ 051004 850 0.2- 0.1+ 250722 X05 0.0 0.1- 050930 J87 0.5- 0.5+ 051004 850 0.0 0.8- 250729 X05 0.0 0.1- 050930 J87 0.6- 0.6+ 051004 850 0.3- 0.3+ 250729 X05 0.0 0.2+ 050930 118 0.1- 0.4- 051004 850 (3.0- 2.9-) 050930 118 0.4+ 0.4+ 051005 850 (3.5- 1.1+) ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2026 July 9