121P/Shoemaker-Holt Orbit by S. Nakano NK 4259 (2020) Observed in 1st half of 2024
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2023 June 29.33710 3.7305642 0.1864929 9.82 11.74949 94.11191 20.16272 0.200 2024 Mar. 31.0 m1 = 1.5 + 5 log Delta + 20.0 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 , ¡ ¡ ¡ ¡ ¡ ¡ 2023 Dec. 22 09 56.89 +28 15.3 09 59.76 +28 00.9 3.129 3.790 -0.06 + 6.9 15.6 6.9/353 125.9 12.1 280/0.73 113 .74 2024 Jan. 1 09 56.25 +29 24.2 09 59.13 +29 09.8 3.031 3.797 -0.26 + 7.5 15.5 8.2/336 135.7 10.4 274/0.64 18 .78 11 09 53.66 +30 38.8 09 56.56 +30 24.6 2.954 3.804 -0.43 + 7.6 15.5 9.4/324 145.4 8.4 265/0.53 141 .01 21 09 49.31 +31 54.6 09 52.24 +31 40.5 2.902 3.812 -0.57 + 7.2 15.4 10.2/315 154.2 6.5 250/0.42 74 .79 31 09 43.56 +33 06.1 09 46.52 +32 52.2 2.878 3.820 -0.66 + 6.2 15.4 10.3/308 160.3 5.0 223/0.32 52 .77 Feb. 10 09 36.97 +34 08.2 09 39.96 +33 54.6 2.883 3.828 -0.67 + 4.9 15.5 9.6/301 160.7 4.9 186/0.32 165 .00 20 09 30.22 +34 56.5 09 33.24 +34 43.2 2.917 3.836 -0.62 + 3.2 15.5 8.2/294 155.1 6.2 158/0.40 36 .82 Mar. 1 09 24.03 +35 28.6 09 27.08 +35 15.5 2.978 3.845 -0.50 + 1.6 15.6 6.3/285 146.7 8.1 141/0.51 88 .75 11 09 19.01 +35 44.1 09 22.08 +35 31.3 3.064 3.854 -0.34 0.0 15.7 4.1/270 137.3 10.1 131/0.61 130 .01 21 09 15.63 +35 43.9 09 18.71 +35 31.3 3.171 3.864 -0.15 - 1.4 15.7 2.3/233 127.9 11.7 124/0.69 15 .84 31 09 14.13 +35 30.2 09 17.21 +35 17.6 3.295 3.873 +0.04 - 2.5 15.9 2.6/168 118.6 13.1 119/0.74 123 .72 Apr. 10 09 14.57 +35 05.1 09 17.64 +34 52.5 3.430 3.883 +0.23 - 3.4 16.0 4.5/140 109.6 14.1 115/0.77 93 .02 20 09 16.90 +34 30.8 09 19.96 +34 18.1 3.575 3.893 +0.40 - 4.2 16.1 6.5/130 101.0 14.7 112/0.77 37 .86 30 09 20.95 +33 49.1 09 23.98 +33 36.2 3.723 3.904 +0.55 - 4.8 16.2 8.4/124 92.8 14.9 110/0.75 155 .66 May 10 09 26.52 +33 01.4 09 29.53 +32 48.3 3.874 3.915 +0.69 - 5.3 16.3 10.2/121 84.9 14.9 108/0.72 60 .05 20 09 33.41 +32 08.9 09 36.38 +31 55.4 4.022 3.926 +0.79 - 5.7 16.4 11.7/119 77.3 14.6 106/0.68 64 .88 30 09 41.39 +31 12.3 09 44.33 +30 58.5 4.167 3.937 +0.89 - 6.0 16.5 12.9/117 70.0 14.0 104/0.64 163 .58 June 9 09 50.29 +30 12.4 09 53.19 +29 58.2 4.305 3.948 +0.96 - 6.3 16.6 14.0/116 63.0 13.2 102/0.58 32 .07 19 09 59.93 +29 09.6 10 02.80 +28 55.1 4.435 3.960 +1.02 - 6.5 16.7 15.0/115 56.2 12.3 100/0.53 89 .90 29 10 10.16 +28 04.6 10 12.99 +27 49.7 4.555 3.972 +1.07 - 6.7 16.8 15.7/115 49.6 11.2 98/0.47 134 .49 July 9 10 20.87 +26 57.7 10 23.67 +26 42.5 4.664 3.984 +1.10 - 6.9 16.9 16.4/114 43.2 10.1 95/0.41 13 .09 19 10 31.94 +25 49.5 10 34.70 +25 34.0 4.760 3.997 +1.13 - 6.9 16.9 16.9/114 37.1 8.8 91/0.35 115 .92 29 10 43.28 +24 40.4 10 46.00 +24 24.6 4.843 4.009 +1.15 - 7.0 17.0 17.2/113 31.2 7.5 86/0.30 105 .40 Aug. 8 10 54.81 +23 31.0 10 57.50 +23 14.9 4.911 4.022 +1.16 - 6.9 17.0 17.5/113 25.7 6.3 79/0.24 23 .11 18 11 06.46 +22 21.7 11 09.12 +22 05.4 4.964 4.035 +1.17 - 6.9 17.1 17.7/112 20.9 5.1 68/0.20 141 .95 28 11 18.17 +21 13.2 11 20.81 +20 56.8 5.002 4.048 +1.17 - 6.7 17.1 17.8/112 17.2 4.2 51/0.16 77 .33 Sept. 7 11 29.89 +20 06.1 11 32.50 +19 49.5 5.023 4.061 +1.16 - 6.5 17.2 17.7/111 15.5 3.8 28/0.15 44 .13 17 11 41.56 +19 01.1 11 44.15 +18 44.4 5.028 4.075 +1.15 - 6.2 17.2 17.6/110 16.5 4.0 4/0.15 163 .98 27 11 53.12 +17 58.8 11 55.69 +17 42.1 5.017 4.088 +1.14 - 5.9 17.2 17.4/109 19.9 4.8 346/0.18 52 .28 Oct. 7 12 04.54 +17 00.1 12 07.09 +16 43.4 4.988 4.102 +1.12 - 5.4 17.2 17.0/108 24.7 5.8 333/0.23 67 .15 17 12 15.73 +16 05.7 12 18.27 +15 49.0 4.944 4.116 +1.09 - 4.9 17.3 16.5/107 30.4 7.0 324/0.27 154 1.00 27 12 26.64 +15 16.5 12 29.17 +14 59.9 4.884 4.130 +1.05 - 4.3 17.3 15.9/105 36.7 8.3 318/0.33 30 .25 Nov. 6 12 37.20 +14 33.3 12 39.71 +14 16.8 4.809 4.144 +1.01 - 3.6 17.3 15.1/104 43.3 9.4 313/0.38 92 .18 16 12 47.31 +13 57.0 12 49.81 +13 40.6 4.721 4.158 +0.96 - 2.8 17.2 14.2/101 50.2 10.5 309/0.43 127 1.00 26 12 56.88 +13 28.4 12 59.38 +13 12.3 4.620 4.173 +0.89 - 2.0 17.2 13.2/ 98 57.4 11.5 306/0.48 18 .24 Dec. 6 13 05.81 +13 08.5 13 08.30 +12 52.5 4.509 4.187 +0.81 - 1.0 17.2 12.0/ 95 64.9 12.3 303/0.52 120 .23 16 13 13.96 +12 58.0 13 16.44 +12 42.2 4.389 4.202 +0.72 0.0 17.2 10.6/ 90 72.7 12.9 300/0.56 98 .99 26 13 21.20 +12 57.5 13 23.67 +12 41.8 4.263 4.216 +0.62 + 1.0 17.1 9.1/ 83 80.7 13.3 297/0.59 32 .23 2025 Jan. 5 13 27.38 +13 07.4 13 29.85 +12 51.9 4.134 4.231 +0.50 + 2.1 17.1 7.5/ 74 88.9 13.4 294/0.62 147 .28 15 13 32.35 +13 27.9 13 34.80 +13 12.5 4.005 4.246 +0.36 + 3.1 17.1 6.1/ 60 97.4 13.3 290/0.63 69 .99 25 13 35.95 +13 58.5 13 38.40 +13 43.2 3.880 4.261 +0.21 + 4.0 17.0 5.0/ 37 106.2 12.8 286/0.63 58 .22 Feb. 4 13 38.06 +14 38.4 13 40.50 +14 23.2 3.763 4.276 +0.05 + 4.7 17.0 4.8/ 9 115.1 12.1 282/0.61 153 .35 14 13 38.59 +15 25.8 13 41.02 +15 10.6 3.659 4.291 -0.11 + 5.2 17.0 5.5/343 124.1 11.0 276/0.57 41 .98 24 13 37.50 +16 18.2 13 39.93 +16 03.0 3.570 4.306 -0.26 + 5.4 16.9 6.6/325 133.0 9.7 269/0.52 89 .19 Mar. 6 13 34.85 +17 12.3 13 37.28 +16 57.0 3.501 4.321 -0.40 + 5.2 16.9 7.7/312 141.4 8.2 258/0.45 122 .42 16 13 30.84 +18 04.0 13 33.26 +17 48.6 3.456 4.336 -0.51 + 4.5 16.9 8.5/302 148.5 6.9 244/0.38 27 .97 26 13 25.75 +18 49.3 13 28.17 +18 33.8 3.437 4.351 -0.58 + 3.5 17.0 8.9/293 153.3 5.9 222/0.33 123 .16