172P/Yeung Orbit by T. Kobayashi NK 4990 (2022) Observed in 1st half of 2025
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2025 Nov. 2.55468 3.3581312 0.2048697 8.68 208.89999 30.88276 11.22330 0.200 2025 May 5.0 m1 = 10.5 + 5 log Delta + 10.0 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 13 28.74 -04 46.4 13 31.34 -05 01.9 3.786 3.595 +0.79 - 5.3 18.9 12.9/114 71.4 15.0 293/0.75 16 .23 2025 Jan. 5 13 36.59 -05 39.6 13 39.19 -05 54.8 3.629 3.582 +0.68 - 4.7 18.8 11.1/115 79.4 15.7 292/0.81 143 .28 15 13 43.36 -06 26.4 13 45.98 -06 41.4 3.469 3.568 +0.55 - 4.0 18.7 9.1/116 87.7 16.0 291/0.86 79 .99 25 13 48.88 -07 06.2 13 51.50 -07 21.0 3.308 3.555 +0.41 - 3.2 18.6 6.8/118 96.4 16.0 290/0.90 42 .22 Feb. 4 13 52.92 -07 38.5 13 55.56 -07 53.2 3.151 3.542 +0.24 - 2.5 18.5 4.3/125 105.4 15.6 289/0.92 173 .35 14 13 55.31 -08 03.1 13 57.95 -08 17.7 3.000 3.530 +0.06 - 1.7 18.4 1.9/153 114.8 14.7 289/0.91 49 .98 24 13 55.89 -08 19.8 13 58.54 -08 34.4 2.860 3.518 -0.13 - 0.9 18.2 2.1/246 124.6 13.4 288/0.87 73 .19 Mar. 6 13 54.57 -08 28.6 13 57.21 -08 43.2 2.735 3.506 -0.32 - 0.2 18.1 4.7/268 134.9 11.6 287/0.78 143 .42 16 13 51.39 -08 30.0 13 54.03 -08 44.7 2.628 3.495 -0.49 + 0.5 18.0 7.2/274 145.6 9.3 286/0.65 16 .97 26 13 46.54 -08 25.0 13 49.17 -08 39.9 2.545 3.484 -0.62 + 1.0 17.9 9.2/276 156.7 6.5 285/0.47 110 .16 Apr. 5 13 40.38 -08 15.2 13 43.01 -08 30.3 2.488 3.473 -0.69 + 1.2 17.9 10.3/277 168.0 3.4 281/0.26 103 .49 15 13 33.46 -08 03.0 13 36.09 -08 18.3 2.460 3.463 -0.70 + 1.2 17.8 10.5/276 178.4 0.5 214/0.04 22 .96 25 13 26.43 -07 51.1 13 29.05 -08 06.6 2.461 3.453 -0.65 + 0.8 17.8 9.7/275 168.8 3.2 117/0.24 151 .11 May 5 13 19.94 -07 42.5 13 22.55 -07 58.2 2.490 3.444 -0.54 + 0.3 17.9 8.0/272 157.6 6.4 113/0.47 63 .54 15 13 14.57 -07 39.7 13 17.18 -07 55.5 2.545 3.435 -0.38 - 0.5 17.9 5.7/265 146.7 9.3 112/0.67 59 .95 25 13 10.72 -07 44.6 13 13.33 -08 00.5 2.623 3.426 -0.21 - 1.4 17.9 3.4/246 136.2 11.8 112/0.83 166 .07 June 4 13 08.65 -07 58.2 13 11.26 -08 14.2 2.719 3.418 -0.02 - 2.3 18.0 2.3/188 126.3 13.8 112/0.94 27 .58 14 13 08.44 -08 21.1 13 11.05 -08 37.1 2.830 3.411 +0.16 - 3.2 18.1 4.0/143 116.8 15.4 112/1.01 94 .93 24 13 10.06 -08 52.9 13 12.67 -09 08.8 2.952 3.404 +0.34 - 4.0 18.2 6.4/129 107.8 16.5 112/1.04 128 .03 July 4 13 13.41 -09 33.1 13 16.03 -09 48.9 3.081 3.397 +0.49 - 4.8 18.3 8.7/123 99.3 17.2 112/1.03 4 .61 14 13 18.34 -10 20.7 13 20.97 -10 36.4 3.214 3.391 +0.64 - 5.4 18.3 10.8/120 91.2 17.4 112/1.01 127 .89 24 13 24.70 -11 14.9 13 27.34 -11 30.4 3.348 3.386 +0.77 - 6.0 18.4 12.7/118 83.4 17.3 112/0.97 94 .01 Aug. 3 13 32.35 -12 14.6 13 35.01 -12 29.9 3.479 3.380 +0.88 - 6.4 18.5 14.4/117 76.0 16.9 112/0.91 30 .64 13 13 41.14 -13 18.8 13 43.82 -13 33.9 3.607 3.376 +0.98 - 6.7 18.6 15.8/116 68.8 16.3 112/0.84 159 .84 23 13 50.95 -14 26.5 13 53.65 -14 41.3 3.729 3.372 +1.08 - 7.0 18.6 17.1/115 61.8 15.3 112/0.77 65 .00 Sept. 2 14 01.68 -15 36.9 14 04.40 -15 51.2 3.843 3.368 +1.16 - 7.2 18.7 18.1/114 55.0 14.2 112/0.70 54 .66 12 14 13.23 -16 48.8 14 15.98 -17 02.7 3.949 3.365 +1.23 - 7.2 18.8 19.0/113 48.4 12.9 112/0.62 171 .77 22 14 25.51 -18 01.6 14 28.29 -18 15.0 4.043 3.363 +1.30 - 7.2 18.8 19.8/112 41.8 11.5 112/0.54 40 .00 Oct. 2 14 38.47 -19 14.3 14 41.28 -19 27.1 4.127 3.361 +1.36 - 7.1 18.8 20.4/111 35.4 9.9 113/0.46 78 .70 12 14 52.02 -20 26.0 14 54.87 -20 38.2 4.198 3.359 +1.41 - 6.9 18.9 20.9/110 29.0 8.3 114/0.37 142 .69 22 15 06.11 -21 36.2 15 09.00 -21 47.6 4.255 3.359 +1.46 - 6.7 18.9 21.3/109 22.7 6.6 115/0.29 17 .00 Nov. 1 15 20.68 -22 44.0 15 23.60 -22 54.6 4.298 3.358 +1.50 - 6.4 18.9 21.6/108 16.4 4.8 119/0.21 102 .73 11 15 35.64 -23 48.8 15 38.61 -23 58.6 4.327 3.358 +1.53 - 6.0 18.9 21.8/107 10.4 3.1 128/0.13 115 .63 21 15 50.95 -24 50.1 15 53.96 -24 59.0 4.341 3.359 +1.56 - 5.6 19.0 21.9/106 5.5 1.6 159/0.07 5 .01 Dec. 1 16 06.53 -25 47.4 16 09.57 -25 55.2 4.340 3.360 +1.58 - 5.2 19.0 21.8/105 5.9 1.7 226/0.08 128 .78 11 16 22.27 -26 40.3 16 25.35 -26 47.1 4.323 3.362 +1.59 - 4.7 18.9 21.7/103 11.1 3.2 253/0.14 90 .59 21 16 38.11 -27 28.5 16 41.22 -27 34.2 4.291 3.365 +1.58 - 4.2 18.9 21.4/102 17.3 5.0 260/0.22 27 .01 31 16 53.93 -28 12.0 16 57.07 -28 16.7 4.244 3.367 +1.57 - 3.8 18.9 21.0/101 23.7 6.7 263/0.30 155 .84 2026 Jan. 10 17 09.62 -28 50.9 17 12.79 -28 54.5 4.183 3.371 +1.55 - 3.3 18.9 20.5/100 30.3 8.5 264/0.39 67 .56 20 17 25.07 -29 25.4 17 28.26 -29 27.8 4.109 3.375 +1.51 - 2.9 18.9 19.9/ 99 37.0 10.1 265/0.47 50 .01 30 17 40.14 -29 55.9 17 43.34 -29 57.3 4.021 3.379 +1.46 - 2.6 18.8 19.1/ 99 43.8 11.6 265/0.55 176 .89 Feb. 9 17 54.69 -30 23.1 17 57.91 -30 23.4 3.922 3.384 +1.39 - 2.4 18.8 18.1/ 98 50.7 13.0 264/0.63 45 .55 19 18 08.58 -30 47.7 18 11.81 -30 46.9 3.813 3.390 +1.31 - 2.2 18.7 17.0/ 98 57.7 14.3 264/0.71 76 .03 Mar. 1 18 21.65 -31 10.6 18 24.88 -31 08.9 3.695 3.396 +1.21 - 2.1 18.6 15.6/ 99 64.9 15.3 264/0.78 146 .93