Nakano Note (Nakano wa Kangaeru noda) NK 4094 P/Catalina-NEAT (2005 JD108 = 2020 H1)
The following improved orbital elements, by S. Nakano, are from 169 observations 2005 to 2020. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.62 arc second. Residuals on the recovery observations were +140" for Right Ascension and -18" for Declination from the prediction in NK 3661 (= HICQ 2019/2020) with the delta-T correction = -0.35 day. The comet has passed 0.11 AU from Jupiter on 1971 Jan. 12 and 0.13 AU from Uranus on 1949 Feb. 21 UT. Orbit before these approaches was T= 1930 05 12.5, q= 5.1072 AU, e= 0.5804, Peri.= 195.48, Node= 81.60, i= 3.70, a= 12.1717 AU, P= 42.5 years. Past-T were 1989 May 16, 1972 Dec. 28, 1930 May 12 and 1887 Sept. 26. See the previous orbits in NK 1359, NK 3661 and CBET 4758 (same orbit). Epoch = 2021 Dec. 12.0 TT T = 2021 Dec. 30.45917 +/- 0.00419 (m.e.) TT Peri. = 89.85071 +/- 0.00048 Node = 223.66283 +/- 0.00036 (2000.0) Inc. = 3.27625 +/- 0.00001 q = 4.0648869 +/- 0.0000042 AU e = 0.3803683 +/- 0.0000005 a = 6.5601663 +/- 0.0000088 AU n' = 0.05865861 +/- 0.00000012 P = 16.802 +/- 0.0000338 years T = 2005 Aug. 10.49611 TT Epoch = 2005 Aug. 18.0 TT Peri. = 90.32561 e = 0.3744872 Node = 224.30810 (2000.0) a = 6.4408875 AU Inc. = 3.27531 n'= 0.06029558 q = 4.0288577 AU P = 16.346 years The predicted orbit for the 2041 return is as follows: T = 2041 May 19.15510 TT Epoch = 2041 May 1.0 TT Peri. = 100.35576 e = 0.4122457 Node = 220.77032 (2000.0) a = 7.2094000 AU Inc. = 3.56888 n'= 0.05091613 q = 4.2373557 AU P = 19.357 years The following residuals in seconds of arc are from the above orbital elements: 2005/ 050808 I77 (5.1+ 5.6-) 060919 699 1.8- 0.0 050512 703 1.8- 1.6- 050808 I77 (2.2+ 0.1+) 060919 699 (3.5- 2.2-) 050512 703 2.0- 0.1+ 050813 213 0.2- 0.1+ 060919 699 0.3- 0.3- 050512 703 0.8- 0.9- 050813 213 0.3- 0.3+ 060919 699 0.8- 0.4- 050512 703 0.6- 0.6- 050813 213 0.4- 0.2+ 060925 691 0.4- 0.3- 050513 699 1.0- 0.3- 050825 644 0.5+ 0.2+ 060925 704 (2.7- 1.7-) 050513 699 0.5- 0.8+ 050825 644 0.3+ 0.3+ 060925 691 0.3- 0.1- 050513 699 0.2+ 1.0- 050825 644 0.3+ 0.1- 060925 704 1.1- 0.5- 050513 699 0.6- 0.5- 050826 048 1.4+ 1.8- 060925 691 0.6- 0.3- 050621 644 0.1+ 0.5+ 050826 048 0.1- 0.5+ 060925 704 0.8- 1.5- 050621 644 0.0 0.0 050826 048 0.5+ 0.1- 060925 704 0.9- 0.9+ 050621 644 0.1+ 0.2+ 050826 048 (2.1+ 0.2-) 060925 704 1.3+ 0.1- 050628 644 0.1+ 0.2+ 050829 215 0.4+ 0.9- 060930 118 0.0 0.3+ 050628 644 0.2+ 0.0 050829 170 0.4+ 0.0 060930 118 0.1+ 0.1- 050628 644 0.1+ 0.1+ 050829 170 0.3+ 0.3- 061002 691 0.1+ 0.0 050630 651 0.3- 0.5+ 050829 170 0.5+ 0.3- 061002 691 0.3- 0.1- 050630 651 0.3- 0.5+ 050830 704 0.6+ 0.3- 061002 691 0.4+ 0.1+ 050630 H06 0.0 0.2+ 050830 704 0.1- 0.5+ 061017 703 0.6- 1.3- 050630 H06 0.9- 0.6- 050830 704 0.2- 0.3- 061017 703 1.6- 0.7- 050630 H06 0.3- 0.9+ 050830 048 0.6- 1.2- 061017 703 (2.1- 0.3+) 050630 673 0.9+ 0.6+ 050830 048 (3.5- 2.7-) 061017 703 1.4- 1.1- 050630 673 0.5+ 0.5+ 050830 048 (2.5- 2.3-) 061019 G96 0.7+ 0.6+ 050630 673 0.5+ 0.5+ 050901 691 0.0 0.0 061019 G96 0.3+ 0.3- 050630 673 0.2+ 0.5+ 050901 691 0.0 0.2- 061019 G96 0.3+ 0.2+ 050705 644 0.5- 0.4- 050901 691 0.4- 0.3- 061019 G96 0.4+ 0.3+ 050705 644 0.3- 0.1- 050905 048 0.2- 1.5+ 061020 644 0.6+ 0.8+ 050705 644 0.0 0.2- 050905 048 0.4+ 1.9+ 061020 644 0.8+ 0.5+ 050706 691 0.4- 0.2- 050905 048 (0.1+ 2.1+) 061020 644 0.6+ 0.6+ 050706 691 0.1+ 0.1+ 050905 048 1.1- 0.3- 061021 644 1.2+ 0.5+ 050706 691 0.8- 0.1+ 050905 048 1.1+ 0.7- 061021 644 0.4+ 0.5+ 050709 673 0.2+ 0.2+ 050917 644 0.5+ 0.7+ 061021 850 0.2+ 0.0 050709 673 0.5+ 0.5+ 050917 644 0.5+ 0.5+ 061021 644 0.0 0.3- 050709 673 0.5+ 0.6+ 050917 644 0.5+ 0.0 061021 850 (0.9+ 2.8-) 050709 691 0.7- 0.1- 051022 415 0.6+ 0.2+ 061027 204 0.1+ 0.5+ 050709 691 0.4- 0.1- 051022 415 0.5+ 0.3+ 061031 G96 1.5+ 0.1- 050709 691 0.2- 0.1+ 051026 215 1.0+ 0.3- 061031 G96 1.4+ 0.2+ 050715 415 0.7+ 0.0 051030 G96 0.0 0.4- 061031 G96 0.8+ 0.5+ 050715 415 0.6+ 0.2+ 051030 G96 0.3+ 0.2- 061031 G96 0.8+ 0.1+ 050718 644 0.3+ 0.0 051030 G96 0.1+ 0.1+ 061115 G96 0.5+ 0.3- 050718 644 0.2+ 0.0 051030 G96 0.2- 0.5- 061115 G96 0.4+ 0.3- 050718 644 0.2- 0.3- 051101 704 0.3+ 0.1+ 061115 G96 0.4+ 0.4- 050727 608 0.0 0.8+ 051101 704 0.8- 0.2+ 061115 G96 0.1+ 0.3- 050727 608 0.3+ 0.3- 051101 704 1.5+ 1.2+ 061116 215 0.7+ 0.6+ 050727 608 0.2- 0.3+ 051101 704 0.4- 0.4- 061116 215 0.0 0.5+ 050728 644 0.5+ 0.0 051201 703 1.2- 0.1+ 061116 215 0.9- 0.5+ 050728 644 0.0 0.1- 051201 703 0.8- 0.6- 061126 215 0.4- 0.3- 050728 644 0.1+ 0.1+ 051201 703 0.3- 0.1+ 061223 130 0.9+ 1.2- 050731 E12 0.4- 0.1- 051201 703 0.1+ 0.0 2007/ 050731 E12 0.8- 0.8- 2006/ 071105 G96 0.3+ 0.0 050731 E12 0.2+ 1.1- 060817 644 0.8+ 0.5+ 071105 G96 0.2+ 0.3+ 050731 E12 1.0- 0.7- 060817 644 0.6+ 0.3+ 071105 G96 0.1+ 0.6+ 050801 599 0.7+ 0.5+ 060817 644 1.1+ 1.1+ 071105 G96 0.5- 0.4+ 050801 599 0.4+ 0.3+ 060917 704 1.7- 0.5+ 2020/ 050801 599 0.7+ 0.4+ 060917 704 1.2+ 0.5+ 200426 J04 0.1- 0.3- 050801 599 0.6+ 0.4+ 060917 704 0.7- 0.8- 200426 J04 0.6- 0.3+ 050803 D74 0.8+ 0.2+ 060917 691 0.3- 0.3- 200426 J04 0.2- 0.1+ 050803 D74 0.8+ 0.4+ 060917 691 0.1+ 0.0 200426 J04 0.3- 0.1- 050803 D74 0.1- 0.2+ 060917 691 0.1+ 0.0 200427 F65 0.3+ 0.5- 050806 644 0.4+ 0.0 060917 703 0.9- 1.0- 200427 F65 0.5+ 0.7- 050806 644 0.1- 0.1- 060917 703 (2.3- 1.1-) 200427 F65 0.2+ 0.3- 050806 644 1.1- 0.9+ 060917 703 1.0- 0.4- 050808 I77 1.8- 0.5- 060917 703 1.3- 1.1- ( ) -------- Rejected Obs.
Associate of the CBAT Late edition Syuichi Nakano 2020 May 2