OAA computing section circular NK 540 Periodic Comet Neujmin 3
The following improved orbital elements, by S. Nakano, are from 43 observations 1929 - 1972, including full planetary perturbations and non-gravitational effect of style II. The mean residual is +/- 1.12 arc seconds. Epoch = 1982 Dec. 17.0 ET T = 1982 Dec. 6.03941 +/- 0.00263 (m.e.) ET Peri. = 145.15291 +/- 0.00135 Node = 149.69012 +/- 0.00057 (1950.0) Inc. = 3.93730 +/- 0.00013 q = 2.0594297 +/- 0.0000145 AU e = 0.5813417 +/- 0.0000033 a = 4.9191179 +/- 0.0000060 AU nß = 0.09033857 +/- 0.00000017 P = 10.910 +/- 0.0000196 years A1 = +1.610 +/- 0.245 A2 = +0.03159 +/- 0.01056 T = 1929 June 28.61755 ET Epoch = 1929 July 8.0 ET Peri. = 140.73770 e = 0.5846311 Node = 158.49743 (1950.0) a = 4.9159289 AU Inc. = 3.68543 nß= 0.09042649 q = 2.0419238 AU P = 10.900 years T = 1940 May 13.87259 ET Epoch = 1940 May 11.0 ET Peri. = 141.00731 e = 0.5851506 Node = 158.40504 (1950.0) a = 4.8933793 AU Inc. = 3.69320 nß= 0.09105226 q = 2.0300154 AU P = 10.825 years T = 1951 May 26.83917 ET Epoch = 1951 June 3.0 ET Peri. = 144.77935 e = 0.5879713 Node = 156.17278 (1950.0) a = 4.9307185 AU Inc. = 3.76095 nß= 0.09001995 q = 2.0315974 AU P = 10.949 years T = 1961 Dec. 1.25887 ET Epoch = 1961 Dec. 7.0 ET Peri. = 147.61297 e = 0.5911825 Node = 150.63309 (1950.0) a = 4.8163242 AU Inc. = 3.85567 nß= 0.09324606 q = 1.9689977 AU P = 10.570 years T = 1972 May 16.52239 ET Epoch = 1972 May 3.0 ET Peri. = 146.92130 e = 0.5897104 Node = 150.20069 (1950.0) a = 4.8167490 AU Inc. = 3.88695 nß= 0.09323373 q = 1.9762622 AU P = 10.571 years The predicted orbit for the 1993 return is as follows: T = 1993 Nov. 13.03804 ET Epoch = 1993 Nov. 29.0 ET Peri. = 146.97199 e = 0.5860310 Node = 149.76647 (1950.0) a = 4.8344290 AU Inc. = 3.99279 nß= 0.09272275 q = 2.0013035 AU P = 10.630 years - continued - P/Neujmin 3 NK 540 - 2 The following residuals in seconds of arc are from the above orbital elements: Date/ UT R.A. (1950) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1929 08 04.96930 21 16 28.14 -12 49 51.5 2.4- 0.4+ 024/HE 1929 08 05.98922 21 16 04.69 -12 54 41.8 ( 3.2- 2.9+) 029/HM 1929 08 06.89257 21 15 43.88 -12 59 07.4 ( 4.4- 1.8-) 094/CR 1929 08 06.93180 21 15 43.21 -12 59 15.4 1.9- 1.9+ 024/HE 1929 08 11.21866 21 14 04.68 -13 20 20.6 1.6+ 2.4- 754/YK 1929 08 12.35045 21 13 38.88 -13 25 53.7 0.3+ 0.5- 662/LI 1929 08 12.36980 21 13 38.49 -13 25 58.7 1.8+ 0.2+ 662/LI 1929 08 12.40876 21 13 37.50 -13 26 08.8 1.6+ 1.5+ 662/LI 1929 08 13.34525 21 13 16.74 -13 30 46.1 0.9+ 1.8+ 662/LI 1929 08 13.94500 21 13 03.47 -13 33 46.6 1.4- 0.3- 024/HE 1929 08 14.23653 21 12 57.42 -13 35 11.7 ( 4.0+ 0.2+) 754/YK 1929 08 15.27784 21 12 34.76 -13 40 19.8 2.4+ 1.1- 754/YK 1929 08 15.36744 21 12 32.60 -13 40 42.6 1.2- 2.0+ 662/LI 1929 08 15.39694 21 12 31.80 -13 40 52.9 2.6- 0.2+ 662/LI 1929 08 28.18044 21 08 59.68 -14 39 17.7 ( 5.8- 1.6+) 754/YK 1929 08 31.86444 21 08 29.31 -14 53 43.3 1.3+ 0.7- 024/HE 1929 09 03.19383 21 08 18.38 -15 02 01.6 0.3+ 0.1- 754/YK 1929 09 04.26387 21 08 15.81 -15 05 35.7 1.7- 1.7+ 662/LI 1929 09 09.14609 21 08 25.35 -15 20 09.0 ( 1.8+ 3.3+) 754/YK 1951 06 01.44826 22 16 33.93 -08 00 40.2 0.2+ 0.5+ 662/LI 1951 06 01.47188 22 16 36.00 -08 00 31.6 0.1+ 1.5- 662/LI 1951 08 07.45763 23 04 43.35 -05 16 05.5 0.3- 1.0+ 662/LI 1951 08 07.47985 23 04 43.03 -05 16 11.3 1.0- 0.3+ 662/LI 1951 11 04.19096 22 51 45.81 -09 32 41.6 0.4- 1.1+ 711/MC 1951 11 04.20381 22 51 46.36 -09 32 39.6 1.3+ 0.8+ 711/MC 1972 04 17.45069 20 59.56 -14 12.5 0.1+ 1.5+ 691/ST Y 1972 04 17.47969 20 59 37.26 -14 12 17.6 0.3- 0.9- 691/ST 1972 05 13.39211 21 51 26.12 -10 23 12.9 0.7+ 0.4+ 805/EL 1972 06 16.30900 22 44 44.39 -06 05 13.5 0.6- 1.0- 821/AL 1972 06 16.33262 22 44 46.16 -06 05 05.3 0.1+ 1.0- 821/AL 1972 06 17.32354 22 45 59.93 -05 59 23.2 1.5+ 0.5+ 821/AL 1972 06 17.34715 22 46 01.48 -05 59 16.3 0.6- 0.6- 821/AL 1972 06 19.36853 22 48 27.58 -05 48 08.4 0.1+ 0.2- 821/AL 1972 06 19.39145 22 48 29.08 -05 48 01.5 1.0- 0.6- 821/AL 1972 07 08.27162 23 06 24.40 -04 37 23.4 0.9- 0.9- 821/AL 1972 07 08.29384 23 06 25.35 -04 37 20.9 0.1+ 1.0- 821/AL 1972 07 09.29264 23 07 06.36 -04 35 29.2 0.3+ 0.8- 821/AL 1972 07 09.31475 23 07 07.08 -04 35 26.6 1.4- 0.5- 821/AL 1972 07 14.34847 23 10 07.64 -04 29 23.0 1.0+ 1.3- 691/ST 1972 07 14.38589 23 10 08.75 -04 29 21.2 1.2+ 1.0- 691/ST 1972 08 12.33354 23 13 10.56 -05 34 53.9 0.1+ 1.8- 801/HO 1972 08 14.33065 23 12 34.13 -05 44 54.8 0.3+ 0.4+ 801/HO 1972 08 14.38681 23 12 33.12 -05 45 11.3 0.2- 0.4+ 691/ST 1972 08 14.41111 23 12 32.57 -05 45 19.0 0.3- 0.2+ 691/ST 1972 08 16.33123 23 11 52.76 -05 55 28.0 1.2+ 1.2+ 801/HO 1972 08 20.28374 23 10 18.27 -06 17 35.8 2.5+ 0.6- 801/HO 1972 09 12.22326 22 58 29.60 -08 33 52.2 0.9- 0.1- 691/ST 1972 09 12.24653 22 58 28.85 -08 34 00.0 0.8- 0.3- 691/ST ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1990 May 2