OAA computing section circular NK 536 Periodic Comet Vaisala 1
The following improved orbital elements, by S. Nakano, are from 101 observations 1939 to 1982, including full planetary perturbations and non-gravitational effect of style II. The mean residual is +/- 1.41 arc seconds. Epoch = 1982 Aug. 19.0 ET T = 1982 July 30.57985 +/- 0.00115 (m.e.) ET Peri. = 47.93413 +/- 0.00024 Node = 134.51037 +/- 0.00015 (1950.0) Inc. = 11.60686 +/- 0.00006 q = 1.7998087 +/- 0.0000019 AU e = 0.6334241 +/- 0.0000005 a = 4.9097849 +/- 0.0000007 AU nß = 0.09059628 +/- 0.00000002 P = 10.879 +/- 0.0000023 years A1 = -0.039 +/- 0.041 A2 = -0.01336 +/- 0.00100 T = 1939 Apr. 26.07391 ET Epoch = 1939 Apr. 7.0 ET Peri. = 44.33948 e = 0.6342929 Node = 135.56270 (1950.0) a = 4.8191182 AU Inc. = 11.27140 nß= 0.09316498 q = 1.7623859 AU P = 10.579 years T = 1949 Nov. 11.25679 ET Epoch = 1949 Nov. 20.0 ET Peri. = 44.32117 e = 0.6350599 Node = 135.46176 (1950.0) a = 4.8016328 AU Inc. = 11.28174 nß= 0.09367434 q = 1.7523083 AU P = 10.522 years T = 1960 May 10.83636 ET Epoch = 1960 May 26.0 ET Peri. = 44.44076 e = 0.6358057 Node = 135.42761 (1950.0) a = 4.7818113 AU Inc. = 11.29139 nß= 0.09425739 q = 1.7415086 AU P = 10.457 years T = 1971 Sept.12.30737 ET Epoch = 1971 Sept. 6.0 ET Peri. = 49.70690 e = 0.6289658 Node = 134.74017 (1950.0) a = 5.0293962 AU Inc. = 11.48114 nß= 0.08738367 q = 1.8660777 AU P = 11.279 years The predicted orbit for the 1993 return is as follows: T = 1993 Apr. 29.17509 ET Epoch = 1993 May 13.0 ET Peri. = 47.36422 e = 0.6347145 Node = 134.39906 (1950.0) a = 4.8811799 AU Inc. = 11.60120 nß= 0.09139382 q = 1.7830241 AU P = 10.784 years The following residuals in seconds of arc are from the above orbital elements: - continued - P/Vaisala 1 NK 536 - 2 Date/ UT R.A. (1950) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1939 01 18.99058 09 47 52.19 +12 02 06.1 1.3- 2.9- 062/TK 1939 01 19.04449 09 47 52.27 +12 02 34.3 1.4- 2.8- 062/TK 1939 02 08.79927 09 44 40.35 +15 58 24.0 0.1- 1.4- 062/TK 1939 02 12.88625 09 43 19.52 +16 54 09.6 0.8+ 2.6- 062/TK 1939 03 14.92147 09 37 42.79 +23 03 56.8 2.1- 0.3- 062/TK 1939 03 17.93273 09 38 20.68 +23 28 56.6 ( 3.3- 0.4-) 062/TK 1939 03 17.94473 09 38 21.32 +23 29 04.5 3.0+ 0.7+ 536/BI 1939 03 18.86135 09 38 36.64 +23 36 01.2 0.3- 1.8- 029/HM 1939 03 19.01329 09 38 38.95 +23 37 06.4 1.0- 2.6- 062/TK 1939 03 19.01757 09 38 39.15 +23 37 11.3 0.9+ 0.7- 029/HM 1939 03 19.83896 09 38 54.98 +23 43 10.4 0.6- 0.2- 029/HM 1939 03 19.84057 09 38 54.81 +23 43 12.0 2.1- 1.6+ 062/TK 1939 03 19.91402 09 38 56.34 +23 43 41.8 0.2+ 0.8- 029/HM 1939 03 20.10406 09 39 00.40 +23 45 07.1 0.0 2.5+ 754/YK 1939 03 21.12570 09 39 22.26 +23 52 06.4 0.2+ 2.3+ 754/YK 1939 03 21.86661 09 39 39.13 +23 56 51.6 ( 4.2- 0.1-) 062/TK 1939 03 22.12266 09 39 45.83 +23 58 31.7 0.1- 0.0 754/YK 1939 03 22.80870 09 40 03.10 +24 02 44.0 3.0- 0.6+ 062/TK 1939 03 23.18356 09 40 13.26 +24 04 59.9 1.6+ 0.7- 754/YK 1939 03 23.80897 09 40 30.54 +24 08 35.5 2.1- 0.3- 062/TK 1939 03 24.15153 09 40 40.70 +24 10 33.1 2.7+ 1.0- 754/YK 1939 03 25.16303 09 41 11.65 +24 16 00.8 2.4+ 0.4- 662/LI 1939 03 25.18178 09 41 12.22 +24 16 07.5 2.9+ 0.3+ 662/LI 1939 03 26.82907 09 42 06.63 +24 24 09.4 2.6- 2.0+ 062/TK 1939 03 27.19538 09 42 19.80 +24 25 48.5 1.5+ 0.7- 754/YK 1939 04 07.09494 09 51 02.02 +24 52 59.0 1.3+ 2.3- 754/YK 1939 04 07.81482 09 51 44.95 +24 53 17.8 1.8- 0.1- 062/TK 1939 04 08.17473 09 52 07.26 +24 53 25.8 0.8+ 0.7- 662/LI 1939 04 09.08671 09 53 04.18 +24 53 25.7 1.5+ 1.8- 754/YK 1939 04 09.84971 09 53 52.53 +24 53 13.6 ( 3.2- 0.2+) 062/TK 1939 04 09.88826 09 53 55.17 +24 53 13.4 0.8- 0.1+ 029/HM 1939 04 09.89218 09 53 55.48 +24 53 13.2 0.1+ 1.2- 022/PN 1939 04 09.92910 09 53 57.69 +24 53 11.8 1.4- 0.3- 029/HM 1939 04 10.93469 09 55 03.86 +24 52 34.7 2.4- 1.0- 062/TK 1939 04 14.93850 09 59 46.35 +24 46 54.2 ( 4.7- 1.7+) 062/TK 1939 04 17.87931 10 03 32.60 +24 39 20.1 2.6- 0.3+ 029/HM 1939 04 17.90771 10 03 34.83 +24 39 14.1 2.1- 0.3- 029/HM 1939 04 17.94074 10 03 37.39 +24 39 05.2 2.2- 1.9- 062/TK 1939 04 21.94539 10 09 08.95 +24 24 19.1 1.2- 0.9+ 062/TK 1939 04 22.19425 10 09 30.64 +24 23 17.2 2.4+ 1.5+ 754/YK 1939 04 25.26076 10 14 02.28 +24 08 23.0 0.9+ 1.5+ 754/YK 1939 04 26.22908 10 15 31.28 +24 03 07.4 2.4+ 0.6+ 662/LI 1939 04 26.24853 10 15 33.04 +24 03 01.3 2.6+ 1.2+ 662/LI 1939 05 06.13064 10 31 45.05 +22 54 23.7 0.7+ 1.0+ 754/YK 1939 06 05.14329 11 28 54.05 +17 14 12.2 0.0 2.0+ 754/YK 1939 06 08.21573 11 35 06.37 +16 31 13.2 1.3+ 0.0 662/LI 1939 06 08.23517 11 35 08.68 +16 30 57.5 1.0+ 0.9+ 662/LI 1949 12 19.16759 14 49 50.90 -08 12 29.8 1.0+ 0.8+ 056/SP 1950 04 16.39147 18 11 53.74 -09 40 03.4 2.6- 0.5- 711/MC 1950 04 20.43644 18 12 58.69 -09 29 11.1 2.4+ 0.8- 711/MC 1950 05 13.32694 18 09 44.14 -08 49 32.7 0.3- 2.2- 711/MC 1950 05 13.34465 18 09 43.45 -08 49 29.5 2.7- 0.3+ 711/MC 1959 11 11.50662 08 29 03.77 +11 40 48.5 1.0+ 0.4+ 662/LI 1959 11 12.53696 08 30 05.84 +11 37 35.0 1.7- 1.3+ 662/LI 1959 11 25.50706 08 41 55.00 +11 03 05.0 2.2+ 1.0+ 689/FS - continued - P/Vaisala 1 NK 536 - 3 Date/ UT R.A. (1950) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1959 11 25.52992 08 41 56.10 +11 03 02.8 2.5+ 1.6+ 689/FS 1959 12 01.54387 08 46 29.82 +10 52 25.5 1.6- 0.1+ 662/LI 1959 12 03.49833 08 47 50.52 +10 49 56.6 0.1- 0.2+ 662/LI 1959 12 03.55319 08 47 52.49 +10 49 53.2 2.0- 0.6+ 662/LI 1959 12 04.34374 08 48 24.14 +10 49 02.2 1.0- 0.7+ 689/FS 1959 12 04.41022 08 48 26.58 +10 48 58.0 1.8- 0.4+ 689/FS 1959 12 30.30860 08 57 57.33 +11 23 09.7 2.3+ 0.7+ 689/FS 1959 12 30.35500 08 57 57.39 +11 23 20.9 2.4+ 0.1+ 689/FS 1960 01 05.44993 08 57 47.41 +11 53 30.5 1.3+ 0.8+ 662/LI 1960 01 05.49022 08 57 47.06 +11 53 44.0 1.3+ 0.5+ 662/LI 1960 01 24.21443 08 51 46.76 +14 26 49.6 0.7+ 1.1+ 689/FS 1960 01 24.22863 08 51 46.31 +14 26 58.7 0.9+ 1.2+ 689/FS 1960 02 16.23801 08 38 52.10 +19 00 50.5 0.9+ 1.2+ 662/LI 1960 02 16.25607 08 38 51.44 +19 01 04.3 0.2- 1.5+ 662/LI 1960 02 17.26561 08 38 22.45 +19 13 28.0 0.0 0.0 689/FS 1960 02 17.27116 08 38 22.29 +19 13 32.4 0.2+ 0.3+ 689/FS 1960 03 16.18522 08 37 11.16 +23 53 27.3 2.2- 1.2- 689/FS 1960 03 16.19699 08 37 11.49 +23 53 31.7 1.9- 1.7- 689/FS 1960 03 19.27564 08 38 53.19 +24 13 30.6 1.9+ 0.2+ 689/FS 1960 03 19.28464 08 38 53.45 +24 13 34.1 1.2+ 0.5+ 689/FS 1960 03 19.83522 08 39 14.07 +24 16 46.0 2.9- 2.7- 062/TK 1960 03 20.16177 08 39 26.97 +24 18 46.0 1.6- 0.7- 662/LI 1960 03 20.17913 08 39 27.61 +24 18 52.1 1.4- 0.7- 662/LI 1960 03 20.29020 08 39 31.56 +24 19 32.6 0.4- 1.1+ 711/MC 1960 03 21.09450 08 40 04.70 +24 24 06.5 1.1+ 0.0 711/MC 1960 03 21.82072 08 40 34.93 +24 28 00.7 1.7- 0.3- 062/TK 1960 03 22.09768 08 40 47.37 +24 29 33.2 0.9+ 0.3- 711/MC 1960 04 16.24763 09 11 06.66 +25 14 00.9 1.1+ 0.0 689/FS 1960 04 16.26079 09 11 07.96 +25 13 59.2 1.7+ 0.2- 689/FS 1960 04 22.21307 09 21 16.11 +24 58 52.0 1.5+ 1.4+ 754/YK 1960 05 14.13580 10 04 58.12 +22 44 20.9 2.6- 1.9+ 754/YK 1960 05 17.17242 10 11 34.18 +22 16 45.0 0.9- 0.8+ 689/FS 1960 05 17.20081 10 11 37.92 +22 16 28.5 0.0 0.5+ 689/FS 1960 06 15.14623 11 17 19.99 +16 27 14.0 1.3- 2.9+ 754/YK 1960 06 18.19205 11 24 21.14 +15 43 25.6 1.3+ 2.1+ 689/FS 1960 06 18.21905 11 24 24.88 +15 43 01.2 1.8+ 1.5+ 689/FS 1970 12 25.30839 06 27 05.23 +12 27 52.9 0.6- 0.8+ 691/ST 1970 12 25.35272 06 27 02.93 +12 27 58.8 0.0 0.8+ 691/ST 1971 01 21.24647 06 04 11.73 +14 00 40.5 0.7+ 1.0+ 691/ST 1971 03 03.18166 05 54 42.00 +17 32 23.7 0.1+ 0.8- 691/ST 1971 03 03.22633 05 54 42.82 +17 32 39.1 0.6- 0.5+ 691/ST 1971 04 20.14635 06 40 42.68 +20 57 33.4 0.2- 0.4+ 691/ST 1971 04 20.16991 06 40 44.77 +20 57 37.4 0.2- 0.8+ 691/ST 1981 12 07.47953 07 06 17.07 +11 56 01.9 0.3- 0.3- 675/PL 1981 12 18.33474 07 00 08.55 +12 10 49.9 1.1- 0.7- 675/PL 1981 12 18.36946 07 00 07.21 +12 10 54.0 0.9+ 0.9- 675/PL 1981 12 18.39724 07 00 05.94 +12 10 56.8 0.3- 1.5- 675/PL 1981 12 31.18602 06 49 59.99 +12 47 49.0 ( 0.0 4.8-) 801/HO 1982 02 27.04226 06 17 29.16 +18 26 04.7 0.8- 0.0 801/HO 1982 03 24.02465 06 32 43.82 +20 49 06.4 0.3- 0.4- 801/HO 1982 04 22.04752 07 12 58.70 +22 29 57.0 2.7+ 0.6- 801/HO ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1990 May 2