171P/Spahr Orbit by T. Kobayashi NK 4989 (2022) : T is corrected by +0.01 day.
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2025 Sep. 24.98725 1.7661612 0.5027425 6.69 347.05096 101.69244 21.95438 0.200 2026 June 9.0 m2 = 15.0 + 5 log Delta + 5.0 log r + 0.03 phase 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 , m2 , ¡ ¡ ¡ ¡ ¡ ¡ 2025 Dec. 31 11 10.70 +24 59.3 11 13.37 +24 43.0 1.305 1.970 +0.76 +15.7 17.8 18.7/ 33 118.2 26.1 284/3.39 105 .84 2026 Jan. 10 11 18.28 +27 36.4 11 20.95 +27 20.0 1.264 2.010 +0.38 +17.3 17.7 18.0/ 16 126.4 23.2 278/3.11 40 .56 20 11 22.08 +30 29.8 11 24.74 +30 13.3 1.238 2.052 -0.02 +17.7 17.6 17.7/359 134.5 20.0 269/2.74 147 .01 30 11 21.89 +33 26.8 11 24.56 +33 10.3 1.231 2.096 -0.39 +16.5 17.6 17.2/344 141.9 16.9 256/2.33 68 .89 Feb. 9 11 17.98 +36 11.5 11 20.69 +35 55.1 1.244 2.142 -0.68 +13.6 17.6 15.9/330 147.4 14.4 237/1.98 74 .55 19 11 11.13 +38 27.6 11 13.87 +38 11.3 1.279 2.189 -0.84 + 9.5 17.6 13.6/315 149.5 13.2 213/1.78 146 .03 Mar. 1 11 02.72 +40 02.2 11 05.50 +39 46.0 1.337 2.238 -0.83 + 4.8 17.8 10.7/298 147.7 13.7 189/1.77 35 .93 11 10 54.38 +40 50.5 10 57.21 +40 34.4 1.416 2.288 -0.68 + 0.4 18.0 7.8/274 142.9 15.2 169/1.87 107 .54 21 10 47.54 +40 54.4 10 50.39 +40 38.5 1.514 2.338 -0.44 - 3.4 18.3 6.0/236 136.4 17.1 154/1.97 115 .05 31 10 43.17 +40 20.8 10 46.04 +40 05.0 1.630 2.390 -0.15 - 6.2 18.5 6.5/196 129.2 18.9 143/2.04 35 .95 Apr. 10 10 41.64 +39 18.4 10 44.50 +39 02.6 1.759 2.442 +0.12 - 8.3 18.8 8.5/170 121.9 20.4 135/2.05 135 .52 20 10 42.87 +37 55.1 10 45.71 +37 39.3 1.901 2.494 +0.37 - 9.8 19.0 10.7/155 114.8 21.5 129/2.01 82 .09 30 10 46.58 +36 17.2 10 49.39 +36 01.3 2.052 2.547 +0.57 -10.8 19.3 12.8/146 107.8 22.1 124/1.93 57 .97 May 10 10 52.33 +34 29.8 10 55.11 +34 13.8 2.210 2.600 +0.74 -11.4 19.5 14.7/140 101.1 22.4 120/1.82 154 .49 20 10 59.74 +32 36.2 11 02.49 +32 20.0 2.373 2.653 +0.87 -11.8 19.7 16.2/136 94.6 22.3 117/1.70 52 .15 30 11 08.47 +30 38.8 11 11.18 +30 22.5 2.540 2.706 +0.97 -11.9 19.8 17.4/133 88.3 22.0 114/1.57 80 .98 June 9 11 18.21 +28 39.5 11 20.87 +28 23.0 2.708 2.759 +1.05 -12.0 20.0 18.4/130 82.2 21.4 112/1.44 152 .44 19 11 28.72 +26 39.4 11 31.35 +26 22.8 2.876 2.812 +1.11 -12.0 20.2 19.2/128 76.2 20.5 110/1.31 29 .20 29 11 39.83 +24 39.5 11 42.43 +24 22.9 3.042 2.865 +1.15 -11.9 20.3 19.8/126 70.4 19.5 107/1.19 101 .99 July 9 11 51.38 +22 40.8 11 53.95 +22 24.1 3.205 2.917 +1.19 -11.7 20.4 20.3/125 64.6 18.4 105/1.06 132 .37 19 12 03.27 +20 43.7 12 05.83 +20 27.0 3.363 2.969 +1.21 -11.5 20.5 20.6/123 58.9 17.0 103/0.95 22 .26 29 12 15.42 +18 49.0 12 17.96 +18 32.3 3.515 3.021 +1.23 -11.2 20.6 20.9/122 53.3 15.6 100/0.83 121 1.00 Aug. 8 12 27.76 +16 57.0 12 30.28 +16 40.4 3.660 3.072 +1.25 -10.9 20.7 21.0/121 47.8 14.2 97/0.73 107 .29 18 12 40.24 +15 08.2 12 42.75 +14 51.8 3.796 3.123 +1.26 -10.5 20.7 21.1/119 42.3 12.6 94/0.63 35 .30 28 12 52.82 +13 23.3 12 55.32 +13 07.0 3.922 3.174 +1.26 -10.1 20.8 21.1/118 36.9 11.0 89/0.53 141 1.00 Sept. 7 13 05.44 +11 42.5 13 07.94 +11 26.5 4.037 3.223 +1.27 - 9.6 20.9 21.0/117 31.7 9.5 83/0.44 81 .21 17 13 18.10 +10 06.3 13 20.60 +09 50.6 4.139 3.273 +1.26 - 9.1 20.9 20.8/116 26.7 7.9 76/0.37 53 .33 27 13 30.75 +08 35.4 13 33.24 +08 20.0 4.228 3.322 +1.26 - 8.5 20.9 20.6/114 22.2 6.6 65/0.30 157 1.00 Oct. 7 13 43.34 +07 09.9 13 45.85 +06 54.9 4.302 3.370 +1.25 - 7.9 21.0 20.3/113 18.7 5.4 50/0.24 56 .15 17 13 55.86 +05 50.6 13 58.37 +05 36.0 4.361 3.418 +1.24 - 7.2 21.0 19.9/111 16.7 4.8 29/0.21 72 .34 27 14 08.23 +04 37.7 14 10.75 +04 23.6 4.403 3.465 +1.22 - 6.5 21.1 19.4/110 17.1 4.8 6/0.21 154 .99 Nov. 6 14 20.42 +03 31.8 14 22.95 +03 18.2 4.429 3.512 +1.20 - 5.8 21.1 18.8/108 19.7 5.5 346/0.24 34 .11 16 14 32.37 +02 33.2 14 34.90 +02 20.1 4.438 3.558 +1.16 - 5.0 21.2 18.1/106 24.1 6.5 331/0.28 92 .36 26 14 43.98 +01 42.5 14 46.53 +01 29.9 4.430 3.604 +1.12 - 4.2 21.2 17.3/104 29.5 7.8 320/0.33 132 .97 Dec. 6 14 55.20 +00 59.8 14 57.75 +00 47.8 4.405 3.648 +1.07 - 3.4 21.3 16.4/102 35.6 9.0 312/0.39 22 .09 16 15 05.90 +00 25.7 15 08.46 +00 14.3 4.363 3.693 +1.01 - 2.5 21.3 15.3/ 99 42.1 10.3 306/0.45 113 .38 26 15 15.99 +00 00.3 15 18.56 -00 10.6 4.307 3.736 +0.94 - 1.6 21.4 14.1/ 97 49.0 11.5 302/0.51 105 .94 2027 Jan. 5 15 25.35 -00 16.3 15 27.92 -00 26.7 4.236 3.779 +0.85 - 0.7 21.4 12.7/ 93 56.3 12.5 297/0.56 32 .07 15 15 33.83 -00 23.9 15 36.40 -00 33.8 4.152 3.822 +0.75 + 0.2 21.4 11.2/ 89 63.8 13.4 294/0.61 136 .41 25 15 41.29 -00 22.6 15 43.86 -00 32.0 4.058 3.864 +0.63 + 1.0 21.4 9.5/ 84 71.7 14.0 290/0.65 76 .91 Feb. 4 15 47.58 -00 12.7 15 50.14 -00 21.7 3.957 3.905 +0.49 + 1.8 21.4 7.6/ 76 79.8 14.4 287/0.69 54 .06 14 15 52.52 +00 05.4 15 55.08 -00 03.3 3.851 3.946 +0.34 + 2.6 21.3 5.8/ 64 88.2 14.5 283/0.71 154 .46 24 15 55.98 +00 31.0 15 58.53 +00 22.4 3.743 3.986 +0.18 + 3.2 21.3 4.2/ 41 96.9 14.3 280/0.72 49 .88 Mar. 6 15 57.81 +01 02.8 16 00.36 +00 54.4 3.638 4.025 +0.01 + 3.7 21.2 3.7/ 2 105.9 13.7 276/0.71 81 .05