121P/Shoemaker-Holt Orbit by S. Nakano NK 4259 (2020) Last obs. 2025 05 19 (F51)
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2023 July 1.71687 3.7353257 0.1865727 9.84 12.14627 94.10712 20.16123 0.200 2026 June 9.0 m1 = 10.0 + 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 , ¡ ¡ ¡ ¡ ¡ ¡ 2025 Dec. 31 15 21.95 -03 13.6 15 24.56 -03 24.1 5.324 4.769 +0.75 - 1.7 20.4 11.4/ 99 51.1 9.2 297/0.33 160 .84 2026 Jan. 10 15 29.46 -03 31.5 15 32.07 -03 41.6 5.215 4.783 +0.68 - 1.1 20.4 10.2/ 96 59.0 10.2 294/0.37 43 .56 20 15 36.24 -03 42.9 15 38.86 -03 52.6 5.094 4.797 +0.59 - 0.5 20.3 8.9/ 93 67.1 10.9 290/0.41 81 .01 30 15 42.15 -03 48.0 15 44.78 -03 57.3 4.963 4.811 +0.49 + 0.1 20.3 7.4/ 89 75.5 11.4 287/0.44 139 .89 Feb. 9 15 47.08 -03 46.9 15 49.70 -03 56.0 4.827 4.825 +0.38 + 0.7 20.3 5.7/ 83 84.0 11.7 285/0.46 24 .55 19 15 50.87 -03 40.1 15 53.50 -03 48.9 4.688 4.839 +0.25 + 1.2 20.2 4.0/ 72 92.9 11.8 282/0.48 110 .03 Mar. 1 15 53.42 -03 28.1 15 56.04 -03 36.8 4.550 4.852 +0.12 + 1.6 20.1 2.4/ 48 101.9 11.5 279/0.48 107 .93 11 15 54.63 -03 11.9 15 57.24 -03 20.5 4.417 4.866 -0.02 + 1.9 20.1 2.0/351 111.2 11.0 276/0.47 28 .54 21 15 54.43 -02 52.4 15 57.04 -03 01.0 4.294 4.879 -0.16 + 2.1 20.0 3.2/311 120.7 10.1 272/0.45 142 .05 31 15 52.83 -02 31.1 15 55.44 -02 39.9 4.186 4.892 -0.29 + 2.1 20.0 4.9/296 130.3 9.0 267/0.41 73 .95 Apr. 10 15 49.92 -02 09.7 15 52.52 -02 18.6 4.096 4.905 -0.41 + 2.0 20.0 6.4/288 139.9 7.6 261/0.35 55 .52 20 15 45.82 -01 49.9 15 48.42 -01 59.0 4.028 4.918 -0.50 + 1.6 19.9 7.7/282 149.2 6.0 251/0.28 156 .09 30 15 40.81 -01 33.6 15 43.40 -01 43.1 3.987 4.931 -0.56 + 1.1 19.9 8.5/277 157.3 4.5 234/0.22 40 .97 May 10 15 35.21 -01 22.6 15 37.80 -01 32.4 3.973 4.944 -0.58 + 0.4 19.9 8.7/273 162.3 3.6 206/0.17 88 .49 20 15 29.38 -01 18.4 15 31.97 -01 28.5 3.987 4.956 -0.56 - 0.4 20.0 8.5/267 161.3 3.7 170/0.18 124 .15 30 15 23.74 -01 21.8 15 26.32 -01 32.3 4.031 4.969 -0.51 - 1.2 20.0 7.8/261 155.2 4.9 145/0.23 22 .98 June 9 15 18.62 -01 33.4 15 21.21 -01 44.1 4.101 4.981 -0.43 - 2.0 20.0 6.7/253 146.7 6.4 132/0.30 124 .44 19 15 14.34 -01 53.0 15 16.94 -02 04.0 4.197 4.994 -0.32 - 2.7 20.1 5.5/241 137.5 7.9 123/0.36 86 .20 29 15 11.13 -02 20.0 15 13.72 -02 31.2 4.313 5.006 -0.20 - 3.4 20.2 4.5/222 128.2 9.2 118/0.41 44 .99 July 9 15 09.10 -02 53.6 15 11.70 -03 04.9 4.447 5.018 -0.08 - 3.9 20.2 4.1/196 118.9 10.2 114/0.44 156 .37 19 15 08.32 -03 32.8 15 10.93 -03 44.1 4.594 5.029 +0.05 - 4.4 20.3 4.4/170 109.8 11.0 111/0.45 52 .26 29 15 08.80 -04 16.4 15 11.43 -04 27.6 4.751 5.041 +0.17 - 4.7 20.4 5.3/152 100.8 11.4 108/0.46 73 1.00 Aug. 8 15 10.48 -05 03.3 15 13.12 -05 14.5 4.912 5.053 +0.28 - 4.9 20.5 6.5/139 92.1 11.6 106/0.45 151 .29 18 15 13.31 -05 52.8 15 15.96 -06 03.8 5.075 5.064 +0.39 - 5.1 20.6 7.7/131 83.6 11.5 104/0.43 24 .30 28 15 17.18 -06 43.6 15 19.84 -06 54.5 5.236 5.075 +0.48 - 5.1 20.6 8.8/126 75.3 11.1 102/0.41 103 1.00 Sept. 7 15 21.99 -07 35.2 15 24.67 -07 45.7 5.392 5.086 +0.57 - 5.1 20.7 9.9/121 67.2 10.5 100/0.37 120 .21 17 15 27.66 -08 26.7 15 30.35 -08 36.9 5.539 5.097 +0.64 - 5.0 20.8 10.8/118 59.2 9.8 98/0.34 19 .33 27 15 34.07 -09 17.5 15 36.78 -09 27.3 5.675 5.108 +0.71 - 4.9 20.9 11.6/115 51.3 8.8 96/0.30 132 1.00 Oct. 7 15 41.14 -10 06.9 15 43.86 -10 16.3 5.797 5.119 +0.76 - 4.7 20.9 12.2/113 43.5 7.7 93/0.26 88 .15 17 15 48.76 -10 54.6 15 51.51 -11 03.5 5.904 5.129 +0.81 - 4.5 21.0 12.7/111 35.8 6.5 90/0.21 39 .34 27 15 56.85 -11 39.9 15 59.61 -11 48.4 5.994 5.140 +0.85 - 4.2 21.0 13.1/109 28.3 5.3 85/0.17 159 .99 Nov. 6 16 05.30 -12 22.6 16 08.08 -12 30.5 6.064 5.150 +0.88 - 3.9 21.0 13.4/107 20.9 3.9 78/0.12 59 .11 16 16 14.04 -13 02.2 16 16.83 -13 09.6 6.115 5.160 +0.89 - 3.6 21.1 13.5/106 13.9 2.6 65/0.08 63 .36 26 16 22.95 -13 38.6 16 25.76 -13 45.3 6.144 5.170 +0.90 - 3.2 21.1 13.5/104 8.6 1.6 33/0.05 160 .97 Dec. 6 16 31.95 -14 11.4 16 34.78 -14 17.6 6.152 5.180 +0.90 - 2.9 21.1 13.4/103 8.7 1.7 338/0.05 32 .09 16 16 40.94 -14 40.6 16 43.78 -14 46.2 6.137 5.189 +0.89 - 2.5 21.1 13.1/101 14.3 2.7 308/0.09 88 .38 26 16 49.82 -15 06.2 16 52.67 -15 11.1 6.102 5.199 +0.87 - 2.1 21.1 12.7/100 21.4 4.0 296/0.13 132 .94 2027 Jan. 5 16 58.47 -15 28.1 17 01.33 -15 32.4 6.045 5.208 +0.83 - 1.8 21.1 12.2/ 99 29.1 5.3 289/0.17 12 .07 15 17 06.79 -15 46.5 17 09.65 -15 50.2 5.969 5.217 +0.79 - 1.4 21.1 11.4/ 98 37.0 6.5 284/0.21 115 .41 25 17 14.65 -16 01.6 17 17.53 -16 04.7 5.874 5.226 +0.73 - 1.2 21.0 10.6/ 96 45.1 7.7 281/0.25 101 .91 Feb. 4 17 21.95 -16 13.6 17 24.83 -16 16.2 5.763 5.235 +0.66 - 0.9 21.0 9.6/ 96 53.4 8.7 279/0.29 26 .06 14 17 28.55 -16 22.9 17 31.44 -16 25.1 5.637 5.243 +0.58 - 0.7 21.0 8.4/ 95 61.8 9.6 277/0.33 145 .46 24 17 34.34 -16 30.1 17 37.23 -16 31.8 5.500 5.252 +0.48 - 0.5 20.9 7.0/ 94 70.4 10.2 275/0.36 70 .88 Mar. 6 17 39.18 -16 35.5 17 42.07 -16 36.9 5.355 5.260 +0.38 - 0.4 20.9 5.4/ 94 79.2 10.7 273/0.38 52 .05