261P/Larson Orbit by S. Nakano NK 4032 (2020) Last obs. 2020 02 12 (A77)
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2025 Dec. 27.40195 2.0142042 0.4228262 6.52 67.36082 291.05084 6.07327 0.200 2025 May 5.0 m1 = 11.5 + 5 log Delta + 10.0 log r Date/ 0h TT R.A.(1950) Decl. R.A.(2000) Decl. Delta r Variation Magnitude Mot./PA Elong. P PA/Tail Moon Age h m ¡ , h m ¡ , for T=+1 day m1 , ¡ ¡ ¡ ¡ ¡ ¡ 2024 Dec. 26 17 06.03 -25 43.7 17 09.11 -25 47.5 4.147 3.213 -0.57 0.0 19.7 21.8/ 94 16.1 4.9 265/0.22 41 .23 2025 Jan. 5 17 22.13 -25 56.0 17 25.22 -25 58.6 4.057 3.171 -0.60 - 0.2 19.6 21.8/ 92 22.5 6.8 267/0.32 86 .28 15 17 38.32 -26 02.4 17 41.43 -26 03.9 3.953 3.130 -0.63 - 0.5 19.4 21.8/ 91 29.0 8.8 267/0.42 138 .99 25 17 54.52 -26 02.9 17 57.63 -26 03.2 3.835 3.087 -0.66 - 0.8 19.3 21.7/ 89 35.5 10.7 267/0.53 20 .22 Feb. 4 18 10.63 -25 57.4 18 13.73 -25 56.5 3.704 3.045 -0.70 - 1.1 19.2 21.5/ 87 42.0 12.5 266/0.64 115 .35 14 18 26.51 -25 45.8 18 29.60 -25 43.8 3.563 3.002 -0.73 - 1.4 19.0 21.1/ 86 48.6 14.3 265/0.75 115 .98 24 18 42.06 -25 28.5 18 45.15 -25 25.3 3.412 2.959 -0.77 - 1.8 18.9 20.6/ 84 55.1 15.9 264/0.87 4 .19 Mar. 6 18 57.16 -25 05.8 19 00.23 -25 01.6 3.253 2.916 -0.82 - 2.2 18.7 19.9/ 83 61.7 17.4 263/1.00 143 .42 16 19 11.67 -24 38.4 19 14.72 -24 33.1 3.087 2.874 -0.87 - 2.7 18.5 19.1/ 81 68.4 18.8 262/1.13 93 .97 26 19 25.46 -24 06.8 19 28.49 -24 00.6 2.918 2.831 -0.92 - 3.2 18.3 18.0/ 79 75.1 19.9 261/1.26 28 .16 Apr. 5 19 38.37 -23 31.9 19 41.37 -23 24.9 2.745 2.788 -0.99 - 3.7 18.1 16.7/ 78 82.0 20.8 260/1.39 170 .49 15 19 50.21 -22 54.8 19 53.18 -22 47.0 2.573 2.745 -1.06 - 4.3 17.9 15.2/ 76 89.0 21.4 259/1.52 69 .96 25 20 00.80 -22 16.5 20 03.75 -22 08.0 2.401 2.702 -1.14 - 4.9 17.7 13.2/ 73 96.2 21.7 258/1.64 57 .11 May 5 20 09.90 -21 38.3 20 12.83 -21 29.3 2.233 2.660 -1.23 - 5.6 17.5 10.9/ 70 103.8 21.6 258/1.74 161 .54 15 20 17.27 -21 01.6 20 20.18 -20 52.1 2.071 2.618 -1.33 - 6.3 17.3 8.3/ 66 111.6 21.0 257/1.82 43 .95 25 20 22.64 -20 27.5 20 25.54 -20 17.7 1.917 2.576 -1.45 - 7.0 17.0 5.3/ 55 119.9 19.9 257/1.85 90 .07 June 4 20 25.71 -19 57.4 20 28.60 -19 47.4 1.774 2.535 -1.57 - 7.7 16.8 2.6/ 17 128.7 18.2 257/1.82 132 .58 14 20 26.26 -19 32.1 20 29.14 -19 22.0 1.645 2.494 -1.71 - 8.3 16.6 3.6/304 138.0 15.8 256/1.70 12 .93 24 20 24.14 -19 12.0 20 27.01 -19 02.1 1.533 2.455 -1.85 - 8.9 16.3 6.9/282 148.0 12.7 256/1.46 128 .03 July 4 20 19.41 -18 56.8 20 22.29 -18 47.1 1.441 2.416 -1.97 - 9.3 16.1 9.9/276 158.5 8.9 255/1.08 99 .61 14 20 12.50 -18 45.1 20 15.38 -18 35.9 1.371 2.377 -2.06 - 9.4 15.9 11.9/274 169.5 4.5 251/0.57 28 .89 24 20 04.17 -18 35.3 20 07.05 -18 26.6 1.325 2.340 -2.11 - 9.4 15.8 12.3/274 178.0 0.9 137/0.12 169 .01 Aug. 3 19 55.54 -18 25.4 19 58.42 -18 17.2 1.304 2.305 -2.10 - 9.2 15.7 10.9/276 167.2 5.6 89/0.74 62 .64 13 19 47.90 -18 13.7 19 50.78 -18 06.0 1.307 2.270 -2.05 - 8.9 15.6 8.0/280 155.9 10.5 86/1.39 71 .84 23 19 42.35 -17 59.5 19 45.23 -17 52.2 1.332 2.237 -1.96 - 8.5 15.6 4.1/294 145.1 15.0 85/1.94 148 .00 Sept. 2 19 39.71 -17 42.4 19 42.59 -17 35.2 1.375 2.206 -1.85 - 8.2 15.6 2.3/ 24 134.9 18.9 84/2.37 27 .66 12 19 40.37 -17 21.6 19 43.24 -17 14.5 1.433 2.177 -1.74 - 8.0 15.7 6.2/ 66 125.4 22.1 83/2.67 111 .77 22 19 44.34 -16 56.7 19 47.20 -16 49.3 1.503 2.149 -1.64 - 7.8 15.7 10.7/ 74 116.7 24.7 82/2.84 115 .00 Oct. 2 19 51.46 -16 26.4 19 54.31 -16 18.5 1.580 2.124 -1.55 - 7.7 15.8 14.8/ 76 108.7 26.5 81/2.91 9 .70 12 20 01.39 -15 49.5 20 04.22 -15 41.0 1.664 2.101 -1.47 - 7.7 15.8 18.4/ 76 101.3 27.8 79/2.90 144 .69 22 20 13.73 -15 04.7 20 16.54 -14 55.4 1.751 2.080 -1.40 - 7.7 15.9 21.6/ 76 94.5 28.5 77/2.84 90 .00 Nov. 1 20 28.14 -14 10.7 20 30.92 -14 00.5 1.841 2.062 -1.35 - 7.8 16.0 24.3/ 75 88.1 28.8 76/2.73 30 .73 11 20 44.23 -13 06.8 20 46.98 -12 55.7 1.931 2.047 -1.30 - 7.9 16.0 26.6/ 74 82.2 28.6 74/2.61 169 .63 21 21 01.68 -11 52.5 21 04.41 -11 40.5 2.023 2.034 -1.26 - 8.0 16.1 28.6/ 73 76.6 28.2 72/2.46 69 .01 Dec. 1 21 20.23 -10 27.6 21 22.92 -10 14.7 2.114 2.025 -1.22 - 8.1 16.2 30.2/ 72 71.3 27.5 70/2.31 53 .78 11 21 39.60 -08 52.4 21 42.26 -08 38.7 2.204 2.018 -1.19 - 8.1 16.3 31.5/ 71 66.2 26.5 69/2.15 165 .59 21 21 59.62 -07 07.7 22 02.25 -06 53.2 2.293 2.015 -1.16 - 8.2 16.3 32.6/ 70 61.3 25.4 67/1.99 52 .01 31 22 20.11 -05 14.2 22 22.71 -04 59.1 2.381 2.014 -1.14 - 8.2 16.4 33.4/ 69 56.6 24.0 66/1.82 75 .84 2026 Jan. 10 22 40.94 -03 13.5 22 43.52 -02 57.7 2.468 2.017 -1.12 - 8.1 16.5 34.0/ 68 52.0 22.6 64/1.66 149 .56 20 23 02.02 -01 06.8 23 04.59 -00 50.6 2.552 2.023 -1.10 - 8.0 16.6 34.5/ 68 47.5 21.0 63/1.50 34 .01 30 23 23.28 +01 04.2 23 25.84 +01 20.7 2.635 2.031 -1.08 - 7.9 16.7 34.7/ 67 43.2 19.4 62/1.35 97 .89 Feb. 9 23 44.66 +03 17.8 23 47.22 +03 34.4 2.716 2.043 -1.06 - 7.6 16.8 34.8/ 67 38.8 17.6 61/1.20 135 .55 19 00 06.14 +05 32.2 00 08.71 +05 48.9 2.793 2.058 -1.05 - 7.3 16.9 34.8/ 67 34.6 15.8 60/1.05 16 .03 Mar. 1 00 27.70 +07 45.9 00 30.28 +08 02.4 2.868 2.075 -1.03 - 7.0 17.0 34.6/ 67 30.4 14.0 59/0.91 118 .93