51P/Harrington-D Orbit by S. Nakano NK 4797 (2022) Observed in 2nd half of 2022
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2022 Oct. 1.65567 1.6921287 0.5434342 7.14 269.25991 83.64858 5.42723 0.200 2023 Sep. 13.0 m1 = 15.5 + 5 log Delta + 10.0 log r Date/ 0h TT R.A.(1950) Decl. R.A.(2000) Decl. Delta r Daily motion Magnitude Mot./PA Elong. P PA/Tail Moon Age h m ¡ , h m ¡ , m , m1 , ¡ ¡ ¡ ¡ ¡ ¡ 2022 Dec. 27 00 27.20 -02 07.0 00 29.76 -01 50.5 1.585 1.883 +1.83 +15.7 19.2 31.6/ 60 91.2 31.5 67/3.41 41 .18 2023 Jan. 6 00 45.48 +00 29.9 00 48.04 +00 46.2 1.720 1.925 +1.86 +15.2 19.5 31.7/ 61 86.3 30.6 67/3.09 84 .99 16 01 04.05 +03 02.1 01 06.63 +03 18.2 1.861 1.970 +1.88 +14.6 19.8 31.7/ 62 81.4 29.6 68/2.78 160 .41 26 01 22.86 +05 28.5 01 25.46 +05 44.1 2.007 2.018 +1.90 +13.9 20.1 31.5/ 64 76.5 28.3 69/2.49 19 .23 Feb. 5 01 41.85 +07 47.9 01 44.48 +08 03.0 2.156 2.068 +1.92 +13.1 20.3 31.2/ 65 71.6 26.9 70/2.22 100 .99 15 02 00.98 +09 59.4 02 03.64 +10 13.7 2.307 2.119 +1.93 +12.2 20.6 30.9/ 66 66.6 25.3 71/1.97 139 .36 25 02 20.22 +12 02.2 02 22.92 +12 15.8 2.459 2.172 +1.94 +11.3 20.8 30.4/ 68 61.7 23.7 72/1.74 2 .27 Mar. 7 02 39.55 +13 55.9 02 42.29 +14 08.7 2.610 2.226 +1.94 +10.3 21.1 30.0/ 69 56.7 21.9 73/1.53 117 1.00 17 02 58.92 +15 40.0 03 01.70 +15 51.8 2.760 2.282 +1.94 + 9.3 21.3 29.4/ 71 51.7 20.0 75/1.33 116 .29 27 03 18.31 +17 14.2 03 21.14 +17 24.9 2.907 2.338 +1.94 + 8.3 21.5 28.9/ 73 46.7 18.1 76/1.15 20 .30 Apr. 6 03 37.69 +18 38.2 03 40.56 +18 47.9 3.048 2.395 +1.94 + 7.3 21.7 28.3/ 74 41.6 16.1 78/0.98 136 1.00 16 03 57.01 +19 52.1 03 59.92 +20 00.6 3.184 2.452 +1.93 + 6.3 21.9 27.8/ 76 36.5 14.1 79/0.83 92 .22 26 04 16.23 +20 55.9 04 19.18 +21 03.1 3.313 2.509 +1.91 + 5.2 22.1 27.2/ 78 31.4 12.1 81/0.68 38 .32 May 6 04 35.30 +21 49.7 04 38.28 +21 55.6 3.433 2.567 +1.89 + 4.3 22.3 26.6/ 80 26.2 10.0 82/0.55 157 1.00 16 04 54.16 +22 33.7 04 57.17 +22 38.3 3.544 2.625 +1.86 + 3.3 22.4 26.0/ 82 21.0 7.9 84/0.42 67 .15 26 05 12.77 +23 08.3 05 15.80 +23 11.6 3.644 2.683 +1.83 + 2.4 22.6 25.3/ 84 15.6 5.8 85/0.30 57 .35 June 5 05 31.05 +23 33.9 05 34.09 +23 35.9 3.733 2.741 +1.79 + 1.6 22.7 24.7/ 85 10.3 3.8 86/0.19 176 .99 15 05 48.96 +23 51.1 05 52.01 +23 51.8 3.809 2.798 +1.75 + 0.8 22.9 24.0/ 87 4.8 1.8 84/0.09 42 .10 25 06 06.43 +24 00.4 06 09.49 +23 59.8 3.872 2.855 +1.70 + 0.1 23.0 23.3/ 89 0.9 0.3 309/0.02 76 .37 July 5 06 23.41 +24 02.6 06 26.46 +24 00.8 3.920 2.912 +1.64 - 0.5 23.1 22.5/ 91 6.4 2.2 279/0.11 152 .96 15 06 39.83 +23 58.5 06 42.88 +23 55.5 3.955 2.969 +1.58 - 1.1 23.2 21.7/ 92 12.2 4.2 278/0.20 19 .07 25 06 55.65 +23 48.8 06 58.68 +23 44.7 3.974 3.025 +1.51 - 1.5 23.3 20.8/ 93 18.1 6.0 279/0.29 97 .41 Aug. 4 07 10.78 +23 34.5 07 13.80 +23 29.3 3.978 3.081 +1.44 - 1.9 23.4 19.9/ 95 24.2 7.8 280/0.37 124 .92 14 07 25.17 +23 16.5 07 28.18 +23 10.4 3.967 3.136 +1.36 - 2.1 23.5 18.9/ 96 30.5 9.4 281/0.45 6 .05 24 07 38.76 +22 56.0 07 41.75 +22 48.9 3.940 3.191 +1.27 - 2.3 23.5 17.7/ 97 37.0 11.0 282/0.53 122 .46 Sept. 3 07 51.46 +22 33.9 07 54.43 +22 26.0 3.899 3.245 +1.17 - 2.3 23.6 16.4/ 98 43.7 12.4 283/0.60 96 .88 13 08 03.18 +22 11.5 08 06.13 +22 02.8 3.844 3.299 +1.06 - 2.2 23.6 15.0/ 98 50.6 13.6 283/0.67 28 .04 23 08 13.83 +21 49.9 08 16.76 +21 40.6 3.775 3.352 +0.94 - 2.0 23.6 13.3/ 98 57.9 14.7 284/0.73 150 .52 Oct. 3 08 23.29 +21 30.6 08 26.20 +21 20.7 3.695 3.405 +0.81 - 1.6 23.7 11.5/ 98 65.5 15.5 285/0.79 67 .84 13 08 31.43 +21 14.7 08 34.33 +21 04.4 3.606 3.457 +0.67 - 1.1 23.7 9.4/ 97 73.5 16.1 285/0.84 54 .03 23 08 38.10 +21 03.7 08 40.99 +20 53.0 3.508 3.508 +0.50 - 0.5 23.7 7.1/ 94 81.8 16.3 285/0.87 176 .60 Nov. 2 08 43.13 +20 58.8 08 46.02 +20 47.9 3.406 3.559 +0.32 + 0.2 23.7 4.6/ 87 90.6 16.2 285/0.89 37 .81 12 08 46.38 +21 01.1 08 49.26 +20 50.0 3.304 3.609 +0.13 + 1.0 23.7 2.1/ 61 99.9 15.7 285/0.89 83 .02 22 08 47.68 +21 11.4 08 50.56 +21 00.2 3.204 3.658 -0.07 + 1.9 23.7 2.1/331 109.8 14.7 285/0.86 140 .67 Dec. 2 08 46.93 +21 29.9 08 49.81 +21 18.7 3.113 3.707 -0.28 + 2.6 23.7 4.7/304 120.1 13.3 284/0.80 6 .79 12 08 44.09 +21 56.1 08 46.99 +21 45.0 3.036 3.755 -0.48 + 3.3 23.7 7.5/296 130.9 11.4 282/0.70 119 .01 22 08 39.26 +22 28.5 08 42.17 +22 17.7 2.977 3.803 -0.65 + 3.7 23.7 9.8/292 142.3 9.1 280/0.57 99 .74 2024 Jan. 1 08 32.70 +23 04.7 08 35.63 +22 54.3 2.942 3.850 -0.78 + 3.8 23.7 11.4/290 153.9 6.4 276/0.41 30 .78 11 08 24.88 +23 41.8 08 27.83 +23 31.9 2.936 3.896 -0.85 + 3.5 23.7 12.1/287 165.7 3.6 267/0.23 160 .01 21 08 16.39 +24 16.6 08 19.37 +24 07.1 2.960 3.942 -0.84 + 3.0 23.8 11.9/285 175.4 1.2 212/0.07 56 .79 31 08 07.97 +24 46.3 08 10.96 +24 37.3 3.017 3.987 -0.77 + 2.3 23.9 10.7/283 168.4 2.8 125/0.18 68 .77 Feb. 10 08 00.28 +25 09.2 08 03.29 +25 00.8 3.105 4.031 -0.64 + 1.6 24.0 8.8/281 156.9 5.5 112/0.33 157 .00 20 07 53.89 +25 24.8 07 56.92 +25 16.7 3.221 4.075 -0.47 + 0.9 24.1 6.4/278 145.5 7.9 108/0.46 16 .82 Mar. 1 07 49.20 +25 33.2 07 52.23 +25 25.5 3.363 4.118 -0.28 + 0.2 24.3 3.8/274 134.5 9.9 105/0.55 105 .75 11 07 46.36 +25 35.3 07 49.40 +25 27.7 3.524 4.160 -0.09 - 0.3 24.4 1.3/255 123.9 11.4 103/0.61 115 .01 21 07 45.43 +25 31.9 07 48.46 +25 24.4 3.701 4.202 +0.09 - 0.8 24.6 1.4/125 113.8 12.5 102/0.64 20 .84 31 07 46.30 +25 23.8 07 49.33 +25 16.2 3.888 4.243 +0.25 - 1.2 24.7 3.6/110 104.1 13.2 102/0.64 140 .72