OAA computing section circular NK 553 Periodic Comet Mueller 3 (1990l)
The following improved orbital elements, by S. Nakano, are from 19 observations 1990 Sept. 17 to Dec. 15. Perturbations by all nine planets and five minor planets were taken into account. The mean residual is +/- 0.99 arc seconds. Epoch = 1990 Aug. 17.0 ET T = 1990 Aug. 1.92712 +/- 0.28291 (m.e.) ET Peri. = 226.01032 +/- 0.12002 Node = 137.33177 +/- 0.10768 (1950.0) Inc. = 9.43614 +/- 0.01811 q = 2.9981142 +/- 0.0003238 AU e = 0.2883400 +/- 0.0000628 a = 4.2128465 +/- 0.0002624 AU nß = 0.11398314 +/- 0.00001065 P = 8.647 +/- 0.0008080 years (+/- 0.30 day) The predicted orbit for the 1999 return is as follows: T = 1999 Mar. 21.31735 ET Epoch = 1999 Mar. 3.0 ET Peri. = 225.43667 e = 0.2887480 Node = 137.28805 (1950.0) a = 4.2331265 AU Inc. = 9.41916 nß= 0.11316502 q = 3.0108197 AU P = 8.709 years 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 ¡ , " " " 1990 09 17.41736 01 38 56.91 -01 46 30.1 ( 4.0+ 3.0+) 675/PL 1990 09 17.45139 01 38 55.92 -01 46 45.6 0.2+ 0.5- 675/PL 1990 09 19.44965 01 38 13.76 -01 58 34.7 1.7+ 0.3- 675/PL 1990 09 19.48385 01 38 12.94 -01 58 46.0 1.4+ 0.6+ 675/PL 1990 09 24.35833 01 36 13.41 -02 28 01.9 0.6- 2.2- 675/PL 1990 09 24.41389 01 36 12.20 -02 28 16.7 ( 4.8+ 3.0+) 675/PL 1990 09 25.35486 01 35 45.97 -02 34 02.2 ( 6.4- 2.7-) 675/PL 1990 09 25.39306 01 35 45.21 -02 34 11.6 1.1- 1.7+ 675/PL 1990 09 30.77326 01 33 05.63 -03 06 21.1 1.3- 0.5+ 372/sk 1990 09 30.78472 01 33 05.24 -03 06 25.0 1.5- 0.6+ 372/sk 1990 10 16.21639 01 24 09.54 -04 29 50.7 1.0+ 0.6+ 801/HO 1990 10 19.62917 01 22 06.18 -04 45 06.5 0.5- 0.5+ 372/sk 1990 10 20.58472 01 21 32.10 -04 49 07.4 0.1+ 0.5- 372/sk 1990 10 21.20338 01 21 10.03 -04 51 38.4 0.3+ 0.2+ 801/HO 1990 11 14.11650 01 09 47.71 -05 41 30.2 0.2+ 0.4- 801/HO 1990 11 14.15161 01 09 46.97 -05 41 29.8 0.6- 0.0 801/HO 1990 11 19.47045 01 08 24.19 -05 38 57.2 1.4+ 0.5- 413/SS 1990 11 21.49340 01 08 00.81 -05 36 47.7 0.8- 0.7- 372/sk 1990 11 23.61336 01 07 41.51 -05 33 43.7 1.6+ 1.5- 372/sk 1990 12 07.48542 01 07 45.94 -04 56 09.4 1.6- 1.5+ 372/sk 1990 12 15.03271 01 09 22.86 -04 24 29.0 0.1- 1.3+ 801/HO 1990 12 15.06027 01 09 23.34 -04 24 23.3 0.4+ 0.7- 801/HO ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1991 September 4