OAA computing section circular NK 1293B 101P/Chernykh - B

The following observations of Nucleus B are calculated from the separation and P. A. of component-B during 1991 - 1992, correctly. However because the observations made at Michigan-Dartmouth on 1991 Sept. 15 were not published, so that 675 observations on Sept. 15 were used instead of them. Date /UT R. A. (2000) Decl. Mag. Code 1991 09 15.35226 23 33 52.21 -08 42 05.9 675 1991 09 15.38958 23 33 50.99 -08 42 19.5 675 1991 09 17.27205 23 32 51.30 -08 52 39.1 691 1991 09 17.28327 23 32 50.87 -08 52 42.6 691 1991 09 17.29357 23 32 50.57 -08 52 45.8 691 1991 10 05.53475 23 23 54.57 -10 16 38.9 18.5 T 413 1991 10 15.21355 23 20 48.54 -10 42 01.2 19.8 T 691 1991 10 15.22392 23 20 48.37 -10 42 02.5 691 1991 10 15.23879 23 20 48.16 -10 42 03.6 691 1991 10 16.17582 23 20 36.04 -10 43 36.1 19.6 T 691 1991 10 16.22834 23 20 35.28 -10 43 41.1 691 1991 10 16.28901 23 20 34.42 -10 43 46.4 691 1991 11 05.20406 23 21 05.44 -10 35 53.4 691 1991 11 05.21805 23 21 05.63 -10 35 51.9 691 1991 11 05.22736 23 21 05.77 -10 35 50.0 691 1991 11 27.11262 23 32 48.23 -09 02 25.3 691 1991 11 27.12167 23 32 48.62 -09 02 22.3 691 1991 11 27.13490 23 32 49.25 -09 02 17.4 691 1991 12 29.08076 00 07 16.93 -04 44 02.8 691 1991 12 29.08589 00 07 17.33 -04 43 59.7 691 1991 12 29.09673 00 07 18.21 -04 43 53.6 691 1992 01 27.09491 00 50 33.07 +00 26 10.0 691 1992 01 27.10978 00 50 34.55 +00 26 21.3 691 1992 03 06.12946 01 59 15.64 +07 52 47.1 18.5 T 691 1992 03 06.13615 01 59 16.35 +07 52 51.1 691 The following improved orbital elements, by S. Nakano, are from 265 observations 1977 to 2005, including planetary perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas, Vesta, and non-gravitational effect of sublimating molecule = CO (or N2) using Yabushita's theory (MN 283, 347). The mean residual is +/- 1.06 arc seconds. See previous orbits of the principal Nuclues A in NK 857, NK 1188 and HICQ 2006. Also see an orbit of Nucleus A in NK 1293. Epoch = 2005 Dec. 16.0 TT T = 2005 Dec. 24.38460 +/- 0.00521 (m.e.) TT Peri. = 263.15061 +/- 0.00301 Node = 130.27114 +/- 0.00279 (2000.0) Inc. = 5.07862 +/- 0.00009 q = 2.3501082 +/- 0.0000049 AU e = 0.5938795 +/- 0.0000057 a = 5.7867268 +/- 0.0000141 AU n' = 0.07080348 +/- 0.00000026 P = 13.920 +/- 0.0000510 years Y1 = +0.447 +/- 0.194 Y2 = -0.10059 +/- 0.00040 Y3 = -0.30875 +/- 0.05695 T = 1978 Feb. 14.91871 TT Epoch = 1978 Feb. 21.0 TT Peri. = 266.73579 e = 0.5942822 Node = 134.77421 (2000.0) a = 6.3306120 AU Inc. = 5.72303 n'= 0.06187790 q = 2.5684419 AU P = 15.928 years T = 1992 Jan. 25.31855 TT Epoch = 1992 Jan. 19.0 TT Peri. = 263.22492 e = 0.5936693 Node = 130.39478 (2000.0) a = 5.7980517 AU Inc. = 5.07653 n'= 0.07059614 q = 2.3559262 AU P = 13.961 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1977/ 770918 095 1.2+ 0.1- 771117 801 0.9- 0.8- 770819 095 (3.1- 0.1+) 770919 688 0.8+ 1.9- 771130 885 2.5+ 2.1+ 770819 095 (3.2- 0.6+) 770919 323 0.2- 0.2+ 771130 885 1.4+ 0.3+ 770820 095 (2.9- 0.0 ) 770922 095 0.9+ 1.6+ 771202 882 1.8+ 2.1+ 770822 095 2.4- 1.8+ 770922 095 1.1+ 1.2+ 771204 323 1.6- 0.6+ 770823 095 0.2+ 0.4+ 770922 095 1.5+ 2.0+ 771204 046 0.7+ 0.1- 770824 095 0.3- 1.2+ 770922 095 0.1- 1.7+ 771204 046 1.3+ 0.1+ 770824 095 0.7+ 0.2+ 770922 095 1.1- 1.6+ 771207 046 1.2+ 1.0- 770825 095 1.3+ 0.5+ 770923 396 0.4+ 1.3- 771207 046 0.0 1.8- 770827 083 0.1+ 1.8+ 770923 396 (0.7+ 2.8-) 771208 095 0.2+ 0.7- 770827 083 (3.3+ 4.1+) 770929 323 1.0- 0.9+ 771208 095 0.3- 1.9+ 770901 809 1.2- 0.5+ 771004 688 0.5+ 1.0- 771210 879 0.7- 0.2- Y 770901 809 0.0 0.9+ 771004 323 1.2+ 0.4+ 771211 879 0.9- 2.2- Y 770902 809 0.5+ 0.5+ 771004 076 2.0+ 2.6+ 771211 879 0.9- 0.6- Y 770902 323 2.6+ 1.1- 771004 076 1.3+ 1.1+ 771211 095 0.7+ 1.0- 770903 809 1.0+ 0.5+ 771005 688 1.9+ 0.8- 771211 095 1.2- 0.7- 770903 494 2.0- 0.0 771006 878 1.1+ 2.4+ Y 771212 095 0.6+ 1.1- 770904 414 2.7- 0.6- 771006 046 1.4- 0.2+ 771212 095 1.9+ 0.2- 770904 323 1.4- 0.4- 771006 046 0.1+ 0.6+ 771228 095 1.7+ 0.5- 770904 372 1.8- 0.9+ 771007 046 0.9- 1.6+ 1978/ 770904 372 0.6- 0.3- 771007 046 0.7- 2.6+ 780101 372 0.7+ 2.5+ 770905 885 1.5+ 1.2- 771007 095 1.1+ 1.3+ 780101 046 0.6+ 0.0 770905 885 2.0+ 1.4- 771007 095 (3.0+ 0.6-) 780101 046 0.3+ 0.3- 770905 885 1.3+ 0.6- 771007 083 (3.5+ 5.0+) 780104 885 2.5- 2.2+ 770905 323 0.0 1.5- 771007 083 (2.6+ 3.6+) 780104 885 1.2- 2.0+ 770906 885 0.9+ 0.8+ 771008 046 1.1+ 0.5+ 780104 046 0.8- 1.1- 770906 380 0.4- 1.1+ 771008 046 0.0 0.6+ 780105 046 0.5- 2.6+ 770906 380 2.0- 1.7+ 771008 095 1.0- 1.4- 780107 046 0.9- 0.4- 770906 095 0.5- 0.5- 771009 805 0.0 0.2+ 780107 046 0.0 0.9- 770906 095 0.2+ 0.6- 771009 485 2.1- 0.7+ 780108 885 0.8+ 1.1- 770906 046 0.6- 1.1- 771009 485 0.9- 0.8+ 780108 046 1.1- 1.0- 770907 414 1.0- 0.1+ 771009 879 0.4- 1.1+ 780108 046 0.1- 1.1- 770907 414 0.8- 0.3+ 771009 879 0.9- 1.1+ 780127 323 (2.7+ 3.1+) 770907 020 0.6- 0.9- 771009 046 0.1+ 0.8+ 780129 879 1.2+ 0.3- 770907 020 0.6+ 1.4- 771009 046 0.8- 1.4+ 780129 879 2.6+ 0.1+ 770908 801 0.5- 0.4+ 771011 805 1.0- 1.7+ 780207 323 0.0 1.0- 770908 688 0.2+ 2.6- 771011 801 (0.8- 3.4+) 780226 323 1.5- 1.4+ 770908 414 1.0- 1.3- 771011 372 0.3+ 1.7- 780304 993 (0.8- 3.0+) 770908 076 0.2+ 1.8- 771011 372 0.3+ 0.5+ 781201 801(23.7+ 2.7-) 770908 076 0.4- 0.9- 771011 396 0.1+ 1.7- 781203 801(23.8+ 1.3-) 770908 095 0.3- 0.3+ 771011 396 1.7+ 1.5- 1991/ 770908 095 0.3+ 0.9+ 771011 095 (0.7+ 3.1+) 910915 675 0.1+ 1.0- 770909 323 1.1+ 0.2- 771011 095 0.6- 0.4- 910915 675 0.6+ 2.3- 770909 046 0.3+ 1.2- 771011 083 (0.6+ 7.9+) 910917 691 0.8- 1.0- 770909 046 1.3+ 0.1- 771011 083 (3.7+ 2.2+) 910917 691 1.6- 0.8- 770910 414 0.2+ 0.5- 771012 323 0.9- 0.7+ 910917 691 0.9- 0.6- 770910 414 1.3+ 1.2- 771012 083 (0.7- 6.8+) 911005 413 1.4+ 0.5+ 770910 414 0.8- 0.4- 771013 095 1.5+ 0.3+ 911015 691 0.3- 0.7+ 770910 878 1.5+ 2.3+ Y 771013 095 1.0- 0.5- 911015 691 0.4- 0.5+ 770910 885 0.1- 1.0+ 771014 485 1.4+ 1.5+ 911015 691 0.1- 0.9+ 770910 095 0.4+ 0.7- 771014 485 1.4+ 0.0 911016 691 0.1- 0.7+ 770910 095 1.7+ 0.5+ 771014 885 1.0- 0.4+ 911016 691 0.1- 0.6+ 770911 485 0.9+ 0.2- 771014 885 0.6+ 0.8+ 911016 691 0.1- 0.8+ 770911 485 0.6+ 0.4+ 771014 882 0.3- 1.8+ 911105 691 1.0+ 0.6+ 770911 372 0.4- 0.0 771014 882 1.5+ 0.3- 911105 691 0.8+ 0.1+ 770911 323 0.6- 0.2+ 771015 885 1.8+ 0.7- 911105 691 0.9+ 0.7+ 770911 372 1.7+ 0.1+ 771015 885 0.6- 1.3+ 911127 691 0.2+ 1.1+ 770912 323 1.0- 0.4+ 771016 046 0.0 0.6- 911127 691 0.1- 0.8+ 770912 046 1.1- 0.0 771016 046 0.7+ 0.7- 911127 691 0.3+ 0.9+ 770912 046 0.5+ 1.0+ 771017 372 0.5- 0.8+ 911229 691 0.2- 0.0 770913 675 1.6- 0.7- 771017 885 2.3+ 0.0 911229 691 0.2- 0.1+ 770913 372 0.3- 0.4+ 771017 885 1.0+ 1.0+ 911229 691 0.2+ 0.2- 770913 372 0.5- 1.2+ 771017 323 1.4+ 0.3+ 1992/ 770913 323 0.8- 0.8+ 771017 323 0.9+ 0.9+ 920127 691 1.7- 1.5+ 770913 046 1.0- 1.4- 771017 095 0.9- 2.0+ 920127 691 (1.1- 2.7+) 770913 046 0.7- 1.5- 771017 095 0.1+ 0.0 920306 691 0.0 1.0+ 770914 414 0.8- 1.1- 771017 046 1.1+ 0.2- 920306 691 0.6- 0.5+ 770914 414 0.3- 1.0- 771017 046 1.1+ 0.0 2005/ 770914 414 1.1- 1.0- 771018 688 1.0+ 1.0- 051130 704 1.7- 0.7- 770914 885 (0.1- 2.8+) 771018 878 0.5- 1.7+ 051130 704 0.9- 0.5+ 770914 046 0.4+ 1.6- 771018 095 1.8- 0.0 051130 704 1.2- 0.1+ 770915 675 0.1- 0.3+ 771018 046 0.0 0.2+ 051130 704 1.1- 0.3- 770915 414 0.6- 0.4- 771018 046 0.8+ 0.2- 051130 704 0.7- 0.4- 770916 688 1.3+ 1.1- 771019 805 0.5+ 0.7+ 051130 703 0.4- 0.1+ 770916 879 0.3- 0.7+ 771019 046 0.8- 0.4- 051130 703 0.2+ 0.7- 770916 879 0.1+ 2.3+ 771019 046 0.4+ 0.1+ 051130 703 0.5+ 1.0- 770916 414 0.3- 1.1- 771031 323 0.0 0.1- 051130 703 0.3+ 0.0 770916 414 0.9- 0.2- 771102 095 1.9- 0.7+ 051201 G96 0.9+ 0.2- 770916 414 0.4- 0.3- 771102 095 0.1- 0.8+ 051201 G96 1.0+ 0.1- 770916 391 1.1+ 2.3- 771103 885 0.6+ 0.4+ 051201 G96 0.8+ 0.0 770916 414 1.2- 0.3- 771103 885 1.2+ 2.2+ 051201 G96 0.3- 0.9- 770916 391 1.8+ 2.5- 771103 020 0.1+ 2.1+ 051202 703 0.9+ 0.2- 770916 885 1.7+ 1.1- 771105 083 (2.3- 4.5+) 051202 703 0.4+ 0.1+ 770916 885 0.6+ 1.1- 771106 095 2.5- 0.6+ 051202 703 1.4+ 0.3- 770916 046 0.8- 1.2- 771106 095 0.6- 0.6+ 051202 703 0.8+ 0.8- 770917 414 1.1- 0.7+ 771106 046 0.4- 1.4- 051203 349 0.0 0.8- 770917 414 0.9- 0.7- 771106 046 2.3- 2.1- 051203 349 1.0- 0.2+ 770917 414 0.7- 0.2- 771107 046 1.5- 2.4+ 051203 349 0.7- 0.4- 770917 414 0.2- 0.1- 771107 046 0.0 1.4- 051203 232 0.7+ 0.0 770917 396 0.2+ 0.1+ 771110 882 2.3- 2.7- 051203 232 0.6+ 0.2- 770917 396 0.2+ 1.5- 771110 882 0.9- 2.1- 051203 232 0.6- 0.8- 770917 414 0.4- 1.4- 771110 046 0.1- 1.1- 051205 939 0.8+ 0.0 770917 414 0.4- 0.2- 771110 046 0.0 0.6- 051205 939 1.1+ 0.2- 770917 083 (0.5+ 3.9+) 771111 046 0.1- 1.9- 051207 213 0.0 0.1- 770918 688 0.7+ 1.8- 771113 323 2.3- 0.8- 051207 213 0.1+ 0.4- 770918 372 1.3- 1.1- 771113 083 (0.7+ 3.1+) 051207 213 0.5+ 0.7- 770918 323 0.1- 1.9- 771113 083 (3.4+ 4.9+) 051207 147 0.5+ 0.5+ 770918 095 0.7- 0.5+ 771114 805 1.3- 0.1+ ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2005 Dec. 14

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