OAA computing section circular NK 537 Periodic Comet Slaughter-Burnham
The following improved orbital elements, by S. Nakano, are from 27 observations 1958 to 1982. Perturbations by all nine planets were taken into account. The mean residual is +/- 1.17 arc seconds. Epoch = 1982 Jan. 31.0 ET T = 1981 Nov. 19.12304 +/- 0.00316 (m.e.) ET Peri. = 44.20435 +/- 0.00312 Node = 345.92389 +/- 0.00306 (1950.0) Inc. = 8.15297 +/- 0.00043 q = 2.5445228 +/- 0.0000066 AU e = 0.5038437 +/- 0.0000013 a = 5.1284701 +/- 0.0000003 AU nß = 0.08486377 +/- 0.00000001 P = 11.614 +/- 0.0000012 years T = 1958 Sept. 5.24033 ET Epoch = 1958 Aug. 25.0 ET Peri. = 44.36809 e = 0.5039313 Node = 346.25658 (1950.0) a = 5.1277967 AU Inc. = 8.16519 nß= 0.08488049 q = 2.5437397 AU P = 11.612 years T = 1970 Apr. 13.36807 ET Epoch = 1970 Apr. 4.0 ET Peri. = 44.29789 e = 0.5041375 Node = 346.09363 (1950.0) a = 5.1297948 AU Inc. = 8.15900 nß= 0.08483090 q = 2.5436727 AU P = 11.618 years T = 1981 Nov. 19.13765 ET Epoch = 1981 Nov. 12.0 ET Peri. = 44.20753 e = 0.5038919 Node = 345.92490 (1950.0) a = 5.1289905 AU Inc. = 8.15307 nß= 0.08485086 q = 2.5445337 AU P = 11.616 years The predicted orbit for the 1993 return is as follows: T = 1993 June 22.42522 ET Epoch = 1993 June 22.0 ET Peri. = 44.12054 e = 0.5035657 Node = 345.73798 (1950.0) a = 5.1226477 AU Inc. = 8.14930 nß= 0.08500850 q = 2.5430578 AU P = 11.594 years - continued - P/Slaughter-Burnham NK 537 - 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 ¡ , " " " 1958 12 10.15597 02 45 01.62 +28 16 00.6 0.3- 2.0- 690/LW 1958 12 11.20499 02 44 45.30 +28 12 54.4 1.2+ 0.8- 690/LW 1958 12 12.14779 02 44 31.92 +28 10 06.6 2.3- 1.3- 690/LW 1958 12 13.14394 02 44 19.58 +28 07 12.0 1.1- 0.8- 690/LW 1958 12 15.20045 02 43 58.94 +28 01 19.0 0.7+ 1.0+ 690/LW 1959 02 02.12426 03 07 15.90 +27 11 38.3 1.0+ 0.4+ 689/FS 1959 02 02.14850 03 07 17.35 +27 11 39.6 1.4+ 0.5+ 689/FS 1959 02 06.12218 03 11 23.61 +27 15 43.2 0.7+ 0.1- 689/FS 1959 02 06.14850 03 11 25.27 +27 15 45.1 0.8+ 0.1+ 689/FS 1959 02 26.11995 03 35 31.07 +27 47 22.0 0.7+ 1.7+ 689/FS 1959 02 26.16462 03 35 34.62 +27 47 26.9 1.1+ 1.7+ 689/FS 1959 03 08.17646 03 49 24.83 +28 07 10.3 0.1- 0.7+ 689/FS 1959 04 01.15572 04 25 54.60 +28 53 21.1 2.1- 0.2+ 689/FS 1959 04 09.15980 04 38 51.21 +29 06 04.1 1.0- 1.8+ 689/FS 1969 11 04.14653 21 52 45.29 -12 55 14.4 0.4- 1.3- 691/ST 1969 11 05.08634 21 53 13.62 -12 50 18.9 0.8+ 0.0 691/ST 1969 11 05.10966 21 53 14.29 -12 50 11.7 0.6+ 0.1- 691/ST 1981 07 09.28863 00 50 42.84 +06 32 07.5 0.6- 1.6+ 801/HO 1981 07 10.30329 00 51 38.22 +06 40 55.2 2.0- 2.6+ 801/HO 1981 07 28.29563 01 05 47.44 +09 07 19.6 1.0- 1.2- 801/HO 1981 08 26.28417 01 16 44.88 +12 14 27.2 0.3- 0.2- 801/HO 1981 09 25.31454 01 08 48.62 +13 54 56.9 ( 2.6- 3.7+) 801/HO 1981 10 02.09722 01 04 44.0 +14 01 43 ( 7.1- 10.1-) 557/ON Y 1981 10 31.23894 00 46 33.95 +13 47 01.6 0.0 2.8+ 801/HO 1981 11 19.85448 00 41 29.18 +13 35 50.1 2.2+ 1.3- 049/US 1981 11 23.08066 00 41 32.92 +13 36 46.4 1.4- 0.4- 801/HO 1981 11 26.81113 00 41 57.93 +13 39 05.6 0.4+ 0.6- 049/US 1981 11 29.14208 00 42 24.47 +13 41 19.4 0.1+ 0.8- 707/ev 1981 12 20.03963 00 52 21.48 +14 28 27.0 0.6+ 0.3- 801/HO 1981 12 25.74516 00 56 46.22 +14 49 36.2 ( 7.0- 2.3-) 010/IC 1982 01 20.75972 01 24 19.41 +17 03 29.6 (10.1- 2.2-) 010/IC ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1990 May 2