504P/WISE-PANSTARRS Orbit by S. Nakano CBET 5540 (2025) Observed in 2nd half of 2025
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2025 Apr. 9.15170 2.2243110 0.4062243 7.25 308.56606 221.11350 8.80535 0.200 2026 June 9.0 m1 = 11.0 + 5 log Delta + 15.0 log r m2 = 15.5 + 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 , m1 m2 , ¡ ¡ ¡ ¡ ¡ ¡ 2025 Dec. 31 16 53.95 -19 34.0 16 56.89 -19 38.6 3.747 2.879 +1.65 - 0.5 20.8 20.9 23.3/ 92 24.2 8.1 283/0.41 155 .84 2026 Jan. 10 17 10.42 -19 40.2 17 13.37 -19 43.7 3.722 2.918 +1.58 + 0.3 20.8 21.0 22.3/ 90 30.5 9.9 280/0.50 67 .56 20 17 26.23 -19 38.6 17 29.18 -19 40.9 3.683 2.957 +1.50 + 1.0 20.9 21.0 21.2/ 88 37.0 11.5 278/0.59 51 .01 30 17 41.23 -19 29.5 17 44.19 -19 30.8 3.631 2.996 +1.41 + 1.7 20.9 21.1 20.0/ 86 43.6 13.1 276/0.68 170 .89 Feb. 9 17 55.32 -19 13.8 17 58.27 -19 14.0 3.567 3.035 +1.30 + 2.3 21.0 21.1 18.6/ 84 50.4 14.5 274/0.76 46 .55 19 18 08.35 -18 52.0 18 11.29 -18 51.3 3.492 3.075 +1.18 + 2.8 21.0 21.1 17.0/ 81 57.4 15.7 272/0.84 76 .03 Mar. 1 18 20.17 -18 25.2 18 23.10 -18 23.6 3.407 3.114 +1.05 + 3.2 . 21.1 15.3/ 78 64.6 16.7 270/0.92 146 .93 11 18 30.66 -17 54.2 18 33.57 -17 51.8 3.314 3.154 +0.90 + 3.5 . 21.1 13.3/ 75 72.1 17.4 268/0.98 25 .54 21 18 39.64 -17 20.1 18 42.55 -17 17.1 3.214 3.193 +0.73 + 3.7 . 21.1 11.1/ 71 79.9 17.9 267/1.03 105 .05 31 18 46.96 -16 44.1 18 49.85 -16 40.6 3.111 3.233 +0.55 + 3.7 . 21.1 8.7/ 65 87.9 18.0 265/1.07 117 .95 Apr. 10 18 52.48 -16 07.4 18 55.35 -16 03.5 3.006 3.272 +0.35 + 3.7 . 21.0 6.3/ 55 96.3 17.7 264/1.09 11 .52 20 18 56.04 -15 31.1 18 58.90 -15 27.0 2.904 3.311 +0.15 + 3.5 . 20.9 4.1/ 32 105.1 17.0 262/1.08 138 .09 30 18 57.52 -14 56.6 19 00.37 -14 52.4 2.807 3.350 -0.06 + 3.2 . 20.8 3.3/344 114.4 15.9 260/1.05 85 .97 May 10 18 56.89 -14 25.0 18 59.73 -14 20.8 2.720 3.389 -0.27 + 2.7 . 20.8 4.8/305 124.0 14.3 258/0.97 37 .49 20 18 54.17 -13 57.3 18 57.00 -13 53.3 2.647 3.428 -0.46 + 2.2 . 20.7 7.1/288 134.0 12.3 256/0.86 167 .15 30 18 49.54 -13 34.6 18 52.37 -13 30.9 2.593 3.466 -0.62 + 1.7 . 20.6 9.2/280 144.3 9.8 252/0.70 51 .98 June 9 18 43.35 -13 17.5 18 46.17 -13 14.3 2.560 3.505 -0.73 + 1.1 . 20.5 10.7/275 154.6 7.1 244/0.52 73 .44 19 18 36.07 -13 06.4 18 38.89 -13 03.7 2.554 3.542 -0.77 + 0.4 . 20.4 11.3/272 164.2 4.5 227/0.32 137 .20 29 18 28.33 -13 01.5 18 31.15 -12 59.3 2.575 3.580 -0.75 - 0.1 . 20.4 11.0/269 169.7 2.9 181/0.21 19 .99 July 9 18 20.79 -13 02.3 18 23.61 -13 00.7 2.625 3.618 -0.67 - 0.7 . 20.5 9.8/266 165.2 4.1 131/0.29 114 .37 19 18 14.07 -13 08.5 18 16.89 -13 07.3 2.703 3.655 -0.54 - 1.1 . 20.7 8.0/262 156.0 6.5 112/0.45 98 .26 29 18 08.66 -13 19.0 18 11.48 -13 18.3 2.806 3.691 -0.38 - 1.4 . 20.8 5.7/255 145.9 8.9 104/0.59 29 1.00 Aug. 8 18 04.88 -13 33.0 18 07.71 -13 32.5 2.932 3.728 -0.20 - 1.7 . 21.0 3.3/240 135.9 10.9 100/0.69 154 .29 18 18 02.91 -13 49.4 18 05.75 -13 49.1 3.078 3.764 -0.01 - 1.8 . 21.2 1.8/186 126.1 12.6 97/0.76 62 .30 28 18 02.78 -14 07.0 18 05.62 -14 06.7 3.238 3.800 +0.16 - 1.8 . 21.4 3.0/127 116.6 13.7 94/0.79 61 1.00 Sept. 7 18 04.42 -14 24.9 18 07.26 -14 24.5 3.409 3.835 +0.33 - 1.7 . 21.5 5.1/110 107.5 14.5 92/0.80 158 .21 17 18 07.69 -14 42.1 18 10.54 -14 41.5 3.588 3.870 +0.48 - 1.5 . 21.7 7.1/103 98.7 14.9 90/0.78 32 .33 27 18 12.45 -14 57.6 18 15.31 -14 56.6 3.771 3.905 +0.61 - 1.3 . 21.8 8.9/ 98 90.2 14.9 88/0.74 93 1.00 Oct. 7 18 18.50 -15 10.7 18 21.37 -15 09.3 3.953 3.939 +0.72 - 0.9 . 21.9 10.5/ 95 81.9 14.6 87/0.69 127 .15 17 18 25.69 -15 20.7 18 28.56 -15 18.7 4.133 3.973 +0.82 - 0.6 . 22.0 11.8/ 93 73.8 13.9 85/0.64 12 .34 27 18 33.85 -15 27.0 18 36.71 -15 24.4 4.307 4.006 +0.90 - 0.2 . 22.1 12.9/ 91 66.0 13.1 83/0.58 124 .99 Nov. 6 18 42.80 -15 29.1 18 45.67 -15 25.9 4.473 4.039 +0.96 + 0.3 . 22.1 13.9/ 89 58.2 12.0 81/0.51 97 .11 16 18 52.42 -15 26.8 18 55.28 -15 22.9 4.628 4.072 +1.01 + 0.8 . 22.2 14.7/ 87 50.6 10.8 78/0.45 25 .36 26 19 02.55 -15 19.8 19 05.40 -15 15.2 4.770 4.104 +1.05 + 1.3 . 22.2 15.3/ 86 43.0 9.4 76/0.38 154 .97 Dec. 6 19 13.06 -15 07.9 19 15.91 -15 02.6 4.897 4.136 +1.08 + 1.7 . 22.3 15.7/ 84 35.6 8.0 72/0.31 70 .09 16 19 23.85 -14 51.2 19 26.68 -14 45.1 5.008 4.168 +1.09 + 2.2 . 22.3 16.0/ 82 28.3 6.4 68/0.25 49 .38 26 19 34.78 -14 29.8 19 37.61 -14 23.0 5.101 4.199 +1.10 + 2.7 . 22.3 16.2/ 81 21.1 4.8 62/0.18 168 .94 2027 Jan. 5 19 45.77 -14 03.8 19 48.58 -13 56.2 5.175 4.229 +1.09 + 3.1 . 22.3 16.2/ 79 14.3 3.3 50/0.12 45 .07 15 19 56.70 -13 33.5 19 59.49 -13 25.2 5.229 4.259 +1.08 + 3.5 . 22.3 16.1/ 78 8.6 2.0 24/0.07 74 .41 25 20 07.48 -12 59.2 20 10.26 -12 50.3 5.263 4.289 +1.05 + 3.8 . 22.3 15.9/ 76 7.5 1.7 328/0.06 143 .91 Feb. 4 20 18.03 -12 21.5 20 20.79 -12 12.0 5.277 4.318 +1.02 + 4.1 . 22.4 15.5/ 75 12.2 2.8 292/0.10 22 .06 14 20 28.24 -11 40.8 20 30.99 -11 30.7 5.270 4.347 +0.98 + 4.4 . 22.4 15.0/ 73 18.9 4.2 278/0.15 102 .46 24 20 38.05 -10 57.7 20 40.77 -10 47.0 5.243 4.375 +0.93 + 4.5 . 22.5 14.4/ 72 26.0 5.7 270/0.21 115 .88 Mar. 6 20 47.35 -10 12.8 20 50.06 -10 01.6 5.198 4.403 +0.87 + 4.6 . 22.5 13.7/ 70 33.4 7.1 266/0.26 9 .05