C/2021 S1 (ATLAS) Orbit by S. Nakano NK 4837 (2022) Last obs. 2024 02 07 (E94)

Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2022 Mar. 1.97690 6.1245968 1.0028805 148.30186 299.85737 52.03916 0.200 2025 May 5.0 m1 = 8.0 + 5 log Delta + 7.5 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 , ¡ ¡ ¡ ¡ ¡ ¡ 2024 Dec. 26 09 28.95 -18 33.8 09 31.28 -18 47.1 8.716 9.204 -0.28 - 3.3 19.9 5.2/230 116.9 5.5 310/0.12 67 .23 2025 Jan. 5 09 26.16 -19 07.2 09 28.48 -19 20.3 8.651 9.250 -0.33 - 2.6 19.9 5.4/241 125.0 5.0 318/0.11 143 .28 15 09 22.84 -19 33.4 09 25.15 -19 46.4 8.604 9.297 -0.37 - 1.8 19.9 5.5/250 132.5 4.5 328/0.10 43 .99 25 09 19.14 -19 51.9 09 21.45 -20 04.7 8.580 9.344 -0.39 - 1.1 19.9 5.6/259 138.8 4.0 341/0.09 95 .22 Feb. 4 09 15.24 -20 02.6 09 17.53 -20 15.3 8.581 9.390 -0.39 - 0.3 20.0 5.5/267 143.4 3.6 357/0.08 117 .35 14 09 11.31 -20 05.8 09 13.60 -20 18.2 8.608 9.437 -0.38 + 0.4 20.0 5.3/274 145.4 3.4 16/0.08 38 .98 24 09 07.55 -20 02.0 09 09.83 -20 14.3 8.662 9.484 -0.34 + 1.0 20.0 4.9/281 144.5 3.5 35/0.08 122 .19 Mar. 6 09 04.12 -19 52.4 09 06.41 -20 04.4 8.742 9.532 -0.29 + 1.4 20.1 4.4/289 140.9 3.8 52/0.08 85 .42 16 09 01.19 -19 38.1 09 03.47 -19 50.1 8.846 9.579 -0.23 + 1.7 20.1 3.7/298 135.3 4.2 66/0.09 56 .97 26 08 58.85 -19 20.8 09 01.14 -19 32.6 8.973 9.626 -0.17 + 1.9 20.1 3.0/309 128.6 4.6 76/0.10 141 .16 Apr. 5 08 57.19 -19 01.8 08 59.48 -19 13.5 9.118 9.674 -0.09 + 1.9 20.2 2.3/325 121.1 5.1 85/0.11 55 .49 15 08 56.25 -18 42.6 08 58.54 -18 54.3 9.279 9.721 -0.02 + 1.8 20.2 1.8/350 113.4 5.4 93/0.11 82 .96 25 08 56.03 -18 24.5 08 58.32 -18 36.1 9.452 9.769 +0.05 + 1.6 20.3 1.7/ 24 105.5 5.7 99/0.12 135 .11 May 5 08 56.51 -18 08.5 08 58.81 -18 20.2 9.633 9.816 +0.12 + 1.3 20.4 2.1/ 52 97.5 5.8 105/0.12 37 .54 15 08 57.66 -17 55.6 08 59.97 -18 07.4 9.817 9.864 +0.18 + 0.9 20.4 2.7/ 70 89.7 5.9 110/0.12 108 .95 25 08 59.42 -17 46.5 09 01.73 -17 58.3 10.002 9.912 +0.23 + 0.5 20.5 3.3/ 82 82.0 5.8 115/0.11 109 .07 June 4 09 01.72 -17 41.7 09 04.03 -17 53.6 10.183 9.960 +0.28 0.0 20.5 4.0/ 90 74.5 5.6 120/0.11 42 .58 14 09 04.50 -17 41.5 09 06.81 -17 53.6 10.357 10.008 +0.32 - 0.5 20.6 4.6/ 96 67.2 5.4 126/0.10 132 .93 24 09 07.68 -17 46.2 09 10.00 -17 58.5 10.521 10.056 +0.35 - 1.0 20.6 5.1/101 60.3 5.0 132/0.09 79 .03 July 4 09 11.19 -17 55.8 09 13.51 -18 08.3 10.673 10.104 +0.38 - 1.5 20.7 5.6/106 53.7 4.6 139/0.09 61 .61 14 09 14.95 -18 10.4 09 17.27 -18 23.0 10.810 10.152 +0.39 - 2.0 20.7 5.9/109 47.6 4.2 146/0.08 146 .89 24 09 18.90 -18 29.9 09 21.22 -18 42.7 10.931 10.200 +0.41 - 2.4 20.8 6.3/113 42.1 3.8 156/0.07 52 .01 Aug. 3 09 22.95 -18 54.1 09 25.27 -19 07.1 11.034 10.248 +0.41 - 2.9 20.8 6.5/117 37.6 3.5 167/0.06 84 .64 13 09 27.05 -19 22.8 09 29.37 -19 36.0 11.117 10.297 +0.41 - 3.3 20.8 6.6/120 34.4 3.2 181/0.06 135 .84 23 09 31.12 -19 55.8 09 33.44 -20 09.1 11.181 10.345 +0.40 - 3.7 20.9 6.7/124 32.8 3.0 196/0.05 35 .00 Sept. 2 09 35.09 -20 32.7 09 37.40 -20 46.3 11.224 10.394 +0.38 - 4.1 20.9 6.7/128 33.1 3.0 212/0.05 107 .66 12 09 38.89 -21 13.3 09 41.20 -21 27.0 11.247 10.442 +0.36 - 4.4 20.9 6.6/132 35.3 3.2 226/0.06 109 .77 22 09 42.45 -21 57.0 09 44.76 -22 10.9 11.250 10.491 +0.32 - 4.7 20.9 6.5/136 39.2 3.5 239/0.06 39 .00 Oct. 2 09 45.70 -22 43.5 09 48.00 -22 57.4 11.234 10.539 +0.29 - 4.9 20.9 6.3/141 44.2 3.8 250/0.07 129 .70 12 09 48.57 -23 32.1 09 50.87 -23 46.1 11.200 10.588 +0.24 - 5.0 20.9 6.0/147 50.1 4.1 259/0.07 80 .69 22 09 51.01 -24 22.2 09 53.30 -24 36.4 11.151 10.636 +0.19 - 5.1 20.9 5.7/153 56.6 4.5 267/0.08 58 .00 Nov. 1 09 52.93 -25 13.1 09 55.21 -25 27.4 11.089 10.685 +0.13 - 5.1 20.9 5.4/160 63.6 4.8 274/0.09 143 .73 11 09 54.28 -26 04.0 09 56.56 -26 18.3 11.016 10.734 +0.07 - 5.0 20.9 5.1/169 71.0 5.0 281/0.09 54 .63 21 09 55.01 -26 54.1 09 57.28 -27 08.4 10.935 10.783 +0.01 - 4.8 20.9 4.8/179 78.6 5.2 287/0.09 82 .01 Dec. 1 09 55.09 -27 42.2 09 57.35 -27 56.5 10.850 10.831 -0.06 - 4.5 20.9 4.6/190 86.3 5.2 293/0.10 136 .78 11 09 54.49 -28 27.3 09 56.74 -28 41.6 10.766 10.880 -0.13 - 4.1 20.9 4.4/202 94.1 5.2 299/0.10 39 .59 21 09 53.22 -29 08.5 09 55.46 -29 22.7 10.685 10.929 -0.19 - 3.6 20.9 4.4/215 101.8 5.1 306/0.09 107 .01 31 09 51.32 -29 44.5 09 53.54 -29 58.7 10.611 10.978 -0.25 - 3.0 20.9 4.4/227 109.4 4.8 313/0.09 110 .84 2026 Jan. 10 09 48.84 -30 14.4 09 51.05 -30 28.5 10.550 11.027 -0.30 - 2.3 20.9 4.5/239 116.7 4.6 321/0.09 46 .56 20 09 45.88 -30 37.5 09 48.08 -30 51.5 10.503 11.076 -0.33 - 1.6 20.9 4.5/250 123.4 4.3 331/0.08 129 .01 30 09 42.57 -30 53.2 09 44.76 -31 07.0 10.475 11.125 -0.35 - 0.8 20.9 4.6/260 129.3 3.9 342/0.07 80 .89 Feb. 9 09 39.05 -31 01.2 09 41.23 -31 14.9 10.468 11.174 -0.36 0.0 21.0 4.6/269 133.8 3.7 355/0.07 67 .55 19 09 35.49 -31 01.7 09 37.66 -31 15.2 10.483 11.223 -0.34 + 0.7 21.0 4.5/278 136.6 3.5 10/0.07 138 .03 Mar. 1 09 32.05 -30 55.2 09 34.21 -31 08.6 10.523 11.272 -0.32 + 1.3 21.0 4.3/287 137.4 3.4 25/0.06 53 .93

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