OAA computing section circular NK 460 Comet Cernis 1983l
The following improved orbital elements, by S. Nakano, are from 157 observations 1983 July 21 to 1984 August 27. Pertur- bations by Mercury to Pluto were taken into account. The mean residual is +/- 1.12 arc seconds: Epoch = 1983 July 5.0 ET T = 1983 July 21.21615 +/- 0.00164 (m.e.) ET Peri. = 186.21817 +/- 0.00032 Node = 208.88364 +/- 0.00023 1950.0 Inc. = 134.70383 +/- 0.00021 q = 3.3178681 +/- 0.0000101 AU e = 1.0018680 +/- 0.0000273 1/a = -0.0005630 +/- 0.0000082 1/AU The extension orbit is from the above orbital elements: Epoch = 1985 May 15.0 ET T = 1983 July 21.03439 ET Peri. = 186.23512 Node = 208.89417 1950.0 Inc. = 134.70110 q = 3.3192069 AU e = 1.0007595 1/a = -0.0002288 1/AU m1 = 3.1 (k=10) m2 = 8.3 (k=5) There are the residuals in seconds of arc from the above orbital elements in the next pages: - continued - Comet Cernis NK 460-2 Date/ UT R.A. (1950.0) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1983 July 21.45284 2 42 51.12 +11 15 31.3 0.4+ 0.2+ 675/gb 21.47089 2 42 51.05 +11 15 18.4 0.9+ 0.2+ 675/gb 21.65486 2 42 50.01 +11 13 09.9 0.6- 0.4+ 474/gl 21.67118 2 42 49.99 +11 12 58.0 0.5+ 0.2+ 474/gl 21.93720 2 42 48.60 +11 09 45.6 0.7+ 2.6+ 186/KB 22.89236 2 42 42.79 +10 58 12.7 0.5+ 1.7+ 323/ca 22.94525 2 42 42.52 +10 57 32.3 ( 0.9+ 3.2+) 186/KB 23.95904 2 42 35.18 +10 45 03.1 ( 0.3+ 6.1+) 186/KB 24.76169 2 42 28.47 +10 34 55.1 0.3- 0.2+ 474/gl 24.77141 2 42 28.37 +10 34 47.7 0.4- 0.1+ 474/gl 25.77893 2 42 19.12 +10 21 51.5 0.1+ 0.4+ 372/sk 25.98464 2 42 16.94 +10 19 09.9 1.8- 1.2- 119/AB 26.75648 2 42 08.81 +10 09 10.2 0.1+ 0.1- 474/gl 26.76215 2 42 08.76 +10 09 06.0 0.4+ 0.1+ 474/gl Aug. 3.71806 2 40 00.62 + 8 16 21.3 2.2+ 1.3+ 372/sk 5.67326 2 39 15.81 + 7 45 57.2 0.1+ 3.0- 890/fu 5.68819 2 39 15.50 + 7 45 44.7 1.0+ 1.4- 890/fu 6.08056 2 39 05.71 + 7 39 30.6 0.9- 1.7- 984/ri 6.70069 2 38 50.27 + 7 29 36.3 2.6+ 1.3- 890/fu 7.73576 2 38 22.65 + 7 12 48.5 0.7+ 0.4- 890/fu 7.74063 2 38 22.45 + 7 12 44.3 0.3- 0.2+ 890/fu 7.98735 2 38 15.70 + 7 08 39.9 0.2+ 0.6- 119/AB 9.98056 2 37 17.44 + 6 35 14.7 0.3- 0.0 119/AB 10.00625 2 37 16.65 + 6 34 48.6 0.0 0.1+ 119/AB 11.42083 2 36 31.68 + 6 10 21.2 2.0+ 0.7+ 675/PL 11.42708 2 36 31.45 + 6 10 18.1 ( 1.8+ 4.2+) 675/PL 12.73889 2 35 46.62 + 5 46 58.6 0.5+ 0.1- 890/fu 12.74410 2 35 46.25 + 5 46 54.2 2.2- 1.1+ 890/fu 13.40590 2 35 22.96 + 5 34 56.3 2.3+ 0.0 657/VC 14.08402 2 34 57.75 + 5 22 30.8 1.3- 2.9- 985/mb 14.09375 2 34 57.64 + 5 22 23.3 2.9+ 0.2+ 046/KL 14.10000 2 34 57.07 + 5 22 15.5 2.1- 0.8- 046/KL 14.11361 2 34 56.68 + 5 21 58.2 0.6- 2.9- 985/mb 14.43579 2 34 44.52 + 5 16 05.3 1.2- 0.1+ 657/VC 14.99549 2 34 23.09 + 5 05 42.3 0.2- 0.0 119/AB 15.00000 2 34 22.89 + 5 05 36.8 0.5- 0.4- 119/AB 15.06432 2 34 20.45 + 5 04 24.7 0.4+ 0.2- 046/KL 15.06872 2 34 20.26 + 5 04 20.1 0.2+ 0.1+ 046/KL 15.99238 2 33 43.4 + 4 46 58 2.5- 1.1+ 024/HE Y 16.06177 2 33 40.68 + 4 45 38.1 0.4- 0.1+ 046/KL 16.06478 2 33 40.58 + 4 45 34.2 0.1- 0.3- 046/KL 16.44792 2 33 25.15 + 4 38 19.2 ( 4.0+ 2.7+) 657/VC 16.99792 2 33 01.87 + 4 27 43.2 0.5- 0.2+ 119/AB 17.45937 2 32 42.18 + 4 18 45.0 0.6- 1.4- 657/VC 17.98194 2 32 19.46 + 4 08 35.4 0.8- 1.1+ 119/AB 18.00694 2 32 18.36 + 4 08 04.6 0.5- 0.3- 119/AB 19.42135 2 31 14.42 + 3 39 59.0 0.6- 0.6- 657/VC 20.44903 2 30 25.81 + 3 19 11.6 0.6+ 1.0+ 657/VC 21.42127 2 29 37.99 + 2 59 10.5 0.4- 0.8+ 657/VC 22.44444 2 28 45.89 + 2 37 45.6 0.1+ 0.1- 657/VC - continued - Comet Cernis NK 460-3 Date/ UT R.A. (1950.0) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1983 Aug. 31.95195 2 19 08.45 - 0 57 27.8 0.7- 0.2- 085/KI Sept. 1.42743 2 18 34.98 - 1 08 57.6 0.3- 0.7+ 707/ev 2.04031 2 17 51.18 - 1 23 56.6 1.5- 1.0- 085/KI 2.06813 2 17 49.23 - 1 24 37.2 0.4- 0.7- 085/KI 2.37176 2 17 27.07 - 1 32 03.9 ( 3.2- 0.7-) 801/HO 2.94826 2 16 45.24 - 1 46 14.3 0.4+ 2.6+ 102/ZV 2.99274 2 16 41.94 - 1 47 21.2 0.3+ 1.6+ 085/KI 3.00789 2 16 40.81 - 1 47 44.7 0.3+ 0.6+ 085/KI 3.03351 2 16 38.88 - 1 48 23.2 0.1+ 0.2+ 085/KI 4.02066 2 15 25.14 - 2 12 59.1 1.5+ 0.2+ 046/KL 4.02581 2 15 24.69 - 2 13 07.9 0.6+ 0.9- 046/KL 4.07207 2 15 21.05 - 2 14 16.9 0.1- 0.2- 085/KI 4.28097 2 15 05.24 - 2 19 28.3 0.0 1.1- 809/ES 4.28928 2 15 04.58 - 2 19 41.1 0.2- 1.4- 809/ES 4.29759 2 15 03.92 - 2 19 53.9 0.4- 1.6- 809/ES 4.99042 2 14 10.70 - 2 37 26.5 1.1+ 1.0- 046/KL 4.99354 2 14 10.40 - 2 37 30.3 0.3+ 0.1- 046/KL 5.00173 2 14 09.63 - 2 37 43.1 0.8- 0.2- 102/ZV 5.36476 2 13 41.51 - 2 46 58.7 1.6+ 3.0- 657/VC 5.71840 2 13 13.55 - 2 55 55.8 1.1+ 0.1+ 890/fu 6.33824 2 12 24.28 - 3 11 52.4 ( 2.1+ 3.3-) 657/VC 6.38542 2 12 20.39 - 3 13 03.0 1.4+ 1.6- 688/LO 6.73854 2 11 51.81 - 3 22 07.9 1.5+ 0.7- 890/fu 7.38775 2 10 58.53 - 3 38 52.2 0.5- 0.2- 809/ES 7.39606 2 10 57.85 - 3 39 05.1 0.2- 0.2- 809/ES 7.40437 2 10 57.19 - 3 39 18.1 0.3+ 0.3- 809/ES 7.99225 2 10 08.56 - 3 54 41.3 0.1- 0.5- 046/KL 7.99525 2 10 08.33 - 3 54 46.1 0.3+ 0.6- 046/KL 7.99690 2 10 08.21 - 3 54 41.9 ( 0.7+ 5.8+) 066/AT 8.40648 2 09 33.53 - 4 05 27.0 1.1- 0.1+ 809/ES 8.41220 2 09 33.06 - 4 05 35.9 0.9- 0.2+ 809/ES 8.47083 2 09 28.25 - 4 07 10.1 0.0 1.8+ 675/PL 8.49583 2 09 26.12 - 4 07 52.4 0.2+ 1.1- 675/PL 9.29808 2 08 17.77 - 4 28 58.6 0.2+ 0.9+ 801/HO 9.99376 2 07 17.28 - 4 47 21.4 ( 2.7- 4.5+) 066/AT 10.10606 2 07 07.46 - 4 50 25.1 1.9- 0.7+ 494/mn 10.97372 2 05 50.65 - 5 13 33.7 ( 4.1- 1.9+) 066/AT 11.96831 2 04 20.93 - 5 40 17.2 ( 4.4- 3.7+) 066/AT 12.37410 2 03 43.90 - 5 51 16.6 0.4- 1.2- 809/ES 12.37963 2 03 43.43 - 5 51 25.5 0.2+ 1.1- 809/ES 12.38518 2 03 42.93 - 5 51 34.3 0.5+ 0.9- 809/ES 12.41383 2 03 40.37 - 5 52 21.2 0.4- 3.0+ 657/VC 12.44375 2 03 37.69 - 5 53 15.0 1.6+ 2.7- 688/LO 12.94736 2 02 51.01 - 6 06 48.7 ( 2.0- 3.6+) 066/AT 13.46543 2 02 02.69 - 6 20 56.7 0.9+ 2.3+ 657/VC 13.96104 2 01 16.06 - 6 34 30.3 0.4+ 0.5+ 491/CN 13.96469 2 01 15.65 - 6 34 29.9 ( 0.3+ 6.9+) 066/AT 14.03541 2 01 08.91 - 6 36 29.3 ( 1.5+ 4.2+) 102/ZV 14.04449 2 01 08.12 - 6 36 47.3 1.1+ 0.6+ 491/CN 14.10190 2 01 02.72 - 6 38 20.8 2.9+ 1.8+ 494/mn - continued - Comet Cernis NK 460-4 Date/ UT R.A. (1950.0) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1983 Sept.14.97977 1 59 38.35 - 7 02 21.6 ( 1.5- 6.0+) 066/AT 15.38529 1 58 59.13 - 7 13 34.8 2.7+ 0.9- 809/ES 15.39083 1 58 58.59 - 7 13 43.8 2.8+ 0.8- 809/ES 15.39637 1 58 58.03 - 7 13 52.9 2.5+ 0.7- 809/ES 16.39296 1 57 19.98 - 7 41 24.6 0.5+ 0.1+ 809/ES 16.39849 1 57 19.43 - 7 41 33.8 0.5+ 0.0 809/ES 16.40404 1 57 18.88 - 7 41 43.0 0.6+ 0.1+ 809/ES 16.75556 1 56 43.88 - 7 51 29.9 1.1- 1.6+ 890/fu 16.98020 1 56 21.56 - 7 57 46.9 0.5- 0.7- 085/KI 17.00756 1 56 18.82 - 7 58 31.5 0.1- 0.2+ 085/KI 17.02619 1 56 16.80 - 7 59 03.3 2.1- 0.5- 085/KI 17.39991 1 55 39.21 - 8 09 21.6 0.7- 0.0 809/ES 17.40407 1 55 38.79 - 8 09 28.3 0.6- 0.2+ 809/ES 17.40823 1 55 38.37 - 8 09 35.1 0.6- 0.4+ 809/ES 18.04529 1 54 33.91 - 8 27 24.4 0.9- 0.5- 020/NI 18.04529 1 54 33.71 - 8 27 26.2 ( 3.9- 2.3-) 020/NI 18.40135 1 53 57.33 - 8 37 15.1 1.1- 0.4+ 809/ES 18.40550 1 53 56.91 - 8 37 22.0 0.9- 0.5+ 809/ES 18.40966 1 53 56.49 - 8 37 28.9 0.8- 0.5+ 809/ES 20.00275 1 51 11.25 - 9 22 06.2 0.5+ 0.4+ 085/KI 20.01968 1 51 09.45 - 9 22 35.4 0.4+ 0.3- 085/KI 20.04400 1 51 06.85 - 9 23 15.5 0.1+ 0.4+ 085/KI 29.90903 1 32 39.51 -13 58 47.8 0.2- 2.4- 046/KL 29.91146 1 32 39.24 -13 58 49.7 0.1+ 0.3- 046/KL Oct. 1.26076 1 29 58.52 -14 35 45.1 2.0- 0.2- 707/ev 1.33333 1 29 49.88 -14 37 43.9 0.8- 0.0 657/VC 1.93206 1 28 38.13 -14 54 02.5 0.1+ 2.5- 046/KL 1.93374 1 28 38.05 -14 54 05.3 1.9+ 2.5- 046/KL 1.93796 1 28 37.26 -14 54 06.5 1.8- 2.8+ 066/AT 2.59340 1 27 18.35 -15 11 51.1 1.0- 1.6+ 890/fu 2.59688 1 27 17.98 -15 11 56.2 0.2- 2.1+ 890/fu 3.89979 1 24 39.22 -15 46 52.4 (11.1- 2.7+) 066/AT 4.30208 1 23 50.83 -15 57 43.9 ( 1.3- 6.4-) 688/LO 5.09190 1 22 14.21 -16 18 31.1 0.2- 0.5+ 491/CN 5.34514 1 21 43.30 -16 25 09.3 0.4+ 2.5+ 657/VC 5.63135 1 21 08.08 -16 32 37.4 0.8+ 0.1+ 474/JN 5.63541 1 21 07.62 -16 32 43.7 1.4+ 0.2+ 474/JN 5.89180 1 20 36.39 -16 39 27.8 ( 3.0+ 3.2+) 066/AT 6.09870 1 20 10.66 -16 44 54.4 1.3+ 0.7+ 491/CN 7.29063 1 17 43.41 -17 15 47.4 2.0- 0.8- 292/h3 9.17184 1 13 50.60 -18 03 29.4 0.7+ 0.2+ 808/YS 9.19955 1 13 47.09 -18 04 10.4 0.3+ 0.9+ 808/YS 10.13691 1 11 50.66 -18 27 31.8 0.0 0.1+ 808/YS 10.15561 1 11 48.28 -18 27 59.8 0.4- 0.1- 808/YS 10.21863 1 11 40.47 -18 29 31.6 1.2+ 1.6+ 808/YS 10.23733 1 11 38.08 -18 29 59.7 0.6+ 1.2+ 808/YS 10.33998 1 11 25.19 -18 32 36.6 2.0- 0.4+ 657/VC 11.14803 1 09 44.85 -18 52 20.4 0.1- 0.8+ 808/YS 11.16673 1 09 42.46 -18 52 48.1 0.7- 0.4+ 808/YS 11.25208 1 09 31.93 -18 54 58.1 0.0 1.4- 688/LO - continued - Comet Cernis NK 460-5 Date/ UT R.A. (1950.0) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1983 Oct. 11.33529 1 09 21.54 -18 56 57.2 0.5+ 1.3+ 657/VC 11.59167 1 08 49.49 -19 03 10.1 1.8- 0.9+ 890/fu 11.60069 1 08 48.38 -19 03 20.9 ( 1.5- 3.2+) 890/fu 11.85128 1 08 17.29 -19 09 24.3 1.4- 2.6+ 066/AT 14.61250 1 02 34.04 -20 14 24.6 1.2- 0.5+ 890/fu 28.19375 0 35 31.19 -24 43 43.0 0.1+ 0.4- 707/ev 30.53143 0 31 11.79 -25 21 06.7 1.3+ 0.7+ 381/ks 30.55341 0 31 09.34 -25 21 26.4 1.0+ 1.3+ 381/ks 30.59924 0 31 04.22 -25 22 09.0 0.2+ 1.0+ 381/ks Nov. 4.15764 0 23 02.55 -26 27 31.3 1.6- 0.8- 688/LO 7.05599 0 18 14.24 -27 04 04.9 ( 3.5- 2.2-) 808/YS 7.07950 0 18 12.01 -27 04 20.8 2.5- 1.2- 808/YS 9.13367 0 14 57.05 -27 28 04.5 1.7- 0.7- 801/HO Dec. 2.04448 23 47 53.85 -30 10 22.7 0.8- 0.6+ 808/YS 2.06822 23 47 52.69 -30 10 28.2 0.4- 0.5+ 808/YS 4.47150 23 46 00.41 -30 19 06.7 0.3+ 0.1- 474/JN 4.47648 23 46 00.20 -30 19 07.7 0.4+ 0.1- 474/JN 8.05407 23 43 31.98 -30 29 54.7 0.5- 0.5- 808/YS 8.07277 23 43 31.23 -30 29 58.2 0.7- 1.1- 808/YS 1984 Feb. 2.51944 23 40 46.84 -30 49 08.0 ( 5.8- 0.9-) 323/PR May 31.76564 0 37 14.03 -40 47 26.6 0.6+ 1.6- 474/JN 31.78346 0 37 14.18 -40 47 40.6 0.1+ 0.9- 474/JN June 26.87083 0 36 31.26 -47 46 24.3 1.5- 2.4- 323/PR July 26.58160 0 13 28.09 -57 10 10.9 0.0 0.6+ 474/JN 26.59167 0 13 27.34 -57 10 22.1 0.6+ 0.7+ 474/JN Aug. 25.69318 23 11 30.48 -64 46 00.8 1.4+ 0.1+ 474/JN 25.70742 23 11 28.00 -64 46 10.1 0.3+ 0.7- 474/JN 27.78681 23 05 49.50 -65 06 17.1 1.4+ 0.4+ 323/PR ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1984 November 30