131P/Mueller Orbit by S. Nakano NK 3184 (2016) Last obs. 2020 01 30 (K81)
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2026 Feb. 15.59073 2.4079552 0.3447765 7.05 179.23343 214.13749 7.36174 0.200 2025 May 5.0 m1 = 8.0 + 5 log Delta + 21.0 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 19 22.58 -16 18.9 19 25.44 -16 12.9 4.330 3.402 -0.48 - 1.1 22.3 20.6/ 82 17.2 4.9 63/0.22 73 .23 2025 Jan. 5 19 36.73 -15 49.5 19 39.58 -15 42.5 4.330 3.370 -0.48 - 1.3 22.3 21.1/ 80 11.0 3.2 50/0.14 55 .28 15 19 51.10 -15 13.5 19 53.92 -15 05.6 4.313 3.337 -0.49 - 1.4 22.2 21.4/ 79 6.3 1.9 16/0.08 166 .99 25 20 05.59 -14 31.1 20 08.40 -14 22.3 4.280 3.304 -0.51 - 1.6 22.1 21.7/ 77 6.8 2.0 314/0.09 52 .22 Feb. 4 20 20.13 -13 42.5 20 22.92 -13 32.9 4.230 3.271 -0.52 - 1.7 21.9 21.9/ 76 11.7 3.5 285/0.16 83 .35 14 20 34.63 -12 48.1 20 37.39 -12 37.6 4.165 3.238 -0.53 - 1.9 21.8 21.9/ 74 17.7 5.3 274/0.24 146 .98 24 20 49.03 -11 48.2 20 51.76 -11 36.9 4.086 3.205 -0.55 - 2.1 21.7 21.9/ 73 23.8 7.2 267/0.33 31 .19 Mar. 6 21 03.24 -10 43.4 21 05.95 -10 31.3 3.992 3.172 -0.57 - 2.3 21.5 21.8/ 72 30.0 9.0 263/0.43 110 .42 16 21 17.21 -09 34.3 21 19.89 -09 21.6 3.885 3.139 -0.59 - 2.4 21.4 21.5/ 70 36.3 10.8 260/0.53 125 .97 26 21 30.88 -08 21.5 21 33.54 -08 08.2 3.767 3.107 -0.61 - 2.6 21.2 21.2/ 69 42.5 12.5 258/0.63 11 .16 Apr. 5 21 44.17 -07 05.8 21 46.81 -06 51.9 3.639 3.074 -0.64 - 2.8 21.0 20.7/ 68 48.8 14.2 256/0.73 136 .49 15 21 57.02 -05 48.1 21 59.64 -05 33.6 3.502 3.042 -0.67 - 3.0 20.9 20.1/ 67 55.1 15.7 254/0.84 104 .96 25 22 09.36 -04 29.1 22 11.97 -04 14.2 3.357 3.009 -0.70 - 3.3 20.7 19.3/ 66 61.5 17.1 253/0.95 23 .11 May 5 22 21.11 -03 09.9 22 23.69 -02 54.6 3.206 2.977 -0.74 - 3.5 20.5 18.3/ 65 67.9 18.3 251/1.06 160 .54 15 22 32.15 -01 51.5 22 34.72 -01 36.0 3.050 2.946 -0.78 - 3.7 20.3 17.1/ 63 74.5 19.3 250/1.17 81 .95 25 22 42.39 -00 35.2 22 44.95 -00 19.4 2.892 2.914 -0.83 - 4.0 20.1 15.7/ 62 81.2 20.1 249/1.28 51 .07 June 4 22 51.67 +00 37.7 22 54.23 +00 53.7 2.732 2.883 -0.89 - 4.2 19.8 14.0/ 61 88.1 20.6 248/1.38 169 .58 14 22 59.84 +01 45.6 23 02.40 +02 01.7 2.574 2.853 -0.95 - 4.5 19.6 12.0/ 59 95.3 20.8 246/1.47 55 .93 24 23 06.73 +02 46.8 23 09.27 +03 03.1 2.418 2.823 -1.02 - 4.9 19.4 9.6/ 57 102.7 20.6 245/1.54 82 .03 July 4 23 12.09 +03 39.2 23 14.64 +03 55.6 2.268 2.793 -1.10 - 5.2 19.1 6.9/ 53 110.6 19.9 244/1.59 146 .61 14 23 15.75 +04 20.6 23 18.29 +04 37.0 2.126 2.764 -1.19 - 5.6 18.9 3.8/ 43 118.9 18.8 242/1.59 25 .89 24 23 17.49 +04 48.5 23 20.04 +05 04.9 1.994 2.736 -1.28 - 6.1 18.7 1.3/338 127.7 17.1 240/1.54 117 .01 Aug. 3 23 17.18 +05 00.3 23 19.72 +05 16.7 1.876 2.708 -1.37 - 6.6 18.5 3.6/260 137.0 14.8 237/1.41 117 .64 13 23 14.82 +04 54.1 23 17.36 +05 10.5 1.776 2.682 -1.45 - 7.0 18.2 6.8/248 146.8 11.9 233/1.20 17 .84 23 23 10.60 +04 28.9 23 13.14 +04 45.2 1.696 2.656 -1.52 - 7.5 18.1 9.5/243 156.9 8.6 225/0.90 153 .00 Sept. 2 23 04.97 +03 45.6 23 07.51 +04 01.8 1.639 2.631 -1.56 - 7.8 17.9 11.1/238 166.6 5.1 206/0.55 82 .66 12 22 58.66 +02 47.6 23 01.20 +03 03.8 1.607 2.607 -1.58 - 7.9 17.8 11.4/234 171.3 3.4 147/0.37 59 .77 22 22 52.52 +01 40.6 22 55.08 +01 56.6 1.602 2.584 -1.56 - 7.9 17.7 10.2/228 164.6 5.9 99/0.66 163 .00 Oct. 2 22 47.48 +00 31.8 22 50.04 +00 47.7 1.623 2.562 -1.52 - 7.6 17.6 8.0/217 154.4 9.7 84/1.06 44 .70 12 22 44.28 -00 31.6 22 46.84 -00 15.8 1.666 2.541 -1.45 - 7.2 17.6 5.4/194 143.9 13.4 77/1.43 102 .69 22 22 43.38 -01 24.1 22 45.95 -01 08.2 1.730 2.522 -1.38 - 6.7 17.6 4.5/147 133.7 16.6 74/1.70 129 .00 Nov. 1 22 45.03 -02 01.5 22 47.60 -01 45.7 1.810 2.504 -1.31 - 6.2 17.7 6.6/108 124.0 19.2 71/1.89 9 .73 11 22 49.18 -02 22.1 22 51.76 -02 06.2 1.903 2.487 -1.24 - 5.8 17.7 9.7/ 92 114.9 21.2 70/1.98 139 .63 21 22 55.68 -02 25.6 22 58.25 -02 09.6 2.005 2.472 -1.18 - 5.4 17.8 13.0/ 84 106.3 22.6 69/2.01 99 .01 Dec. 1 23 04.28 -02 12.5 23 06.85 -01 56.3 2.114 2.458 -1.13 - 5.1 17.8 15.9/ 80 98.3 23.4 68/1.98 26 .78 11 23 14.70 -01 44.1 23 17.27 -01 27.7 2.226 2.446 -1.08 - 4.8 17.9 18.4/ 77 90.8 23.7 67/1.92 169 .59 21 23 26.67 -01 01.9 23 29.24 -00 45.4 2.340 2.436 -1.04 - 4.6 18.0 20.7/ 75 83.6 23.7 66/1.82 74 .01 31 23 39.97 -00 07.6 23 42.53 +00 09.1 2.453 2.427 -1.01 - 4.4 18.0 22.5/ 73 76.9 23.2 66/1.72 55 .84 2026 Jan. 10 23 54.36 +00 56.9 23 56.92 +01 13.6 2.565 2.420 -0.98 - 4.3 18.1 24.1/ 72 70.4 22.5 66/1.60 168 .56 20 00 09.68 +02 09.9 00 12.24 +02 26.6 2.674 2.414 -0.96 - 4.1 18.2 25.4/ 72 64.2 21.5 66/1.47 51 .01 30 00 25.79 +03 29.6 00 28.36 +03 46.2 2.778 2.410 -0.94 - 4.0 18.2 26.5/ 71 58.3 20.3 66/1.34 82 .89 Feb. 9 00 42.56 +04 54.1 00 45.14 +05 10.5 2.878 2.408 -0.93 - 3.8 18.3 27.3/ 71 52.5 19.0 67/1.22 148 .55 19 00 59.91 +06 21.7 01 02.51 +06 37.9 2.972 2.408 -0.92 - 3.7 18.4 28.0/ 71 47.0 17.5 67/1.09 28 .03 Mar. 1 01 17.77 +07 50.9 01 20.38 +08 06.6 3.059 2.409 -0.91 - 3.5 18.4 28.5/ 72 41.6 15.8 68/0.96 107 .93