50P/Arend Orbit by S. Nakano NK 4721 (2022) Observed in 1st half of 2025
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2024 May 12.64202 1.9219578 0.5297241 8.26 49.31661 355.14511 19.10024 0.200 2025 May 5.0 m1 = 9.5 + 5 log Delta + 15.0 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 10 10.21 +32 38.4 10 13.09 +32 23.5 1.992 2.712 -0.50 + 3.2 17.5 7.0/297 128.1 16.6 276/1.50 76 .23 2025 Jan. 5 10 05.22 +33 09.8 10 08.13 +32 55.1 1.953 2.764 -0.79 + 3.0 17.6 10.4/287 138.2 13.7 268/1.26 148 .28 15 09 57.26 +33 39.4 10 00.20 +33 25.0 1.934 2.817 -1.02 + 2.1 17.7 12.9/280 148.1 10.6 256/0.99 20 .99 25 09 47.04 +34 00.0 09 50.00 +33 46.0 1.939 2.870 -1.14 + 0.6 17.8 14.2/273 156.7 7.8 236/0.73 112 .22 Feb. 4 09 35.61 +34 05.4 09 38.61 +33 51.9 1.972 2.923 -1.13 - 1.3 18.0 14.2/266 161.3 6.2 202/0.57 106 .35 14 09 24.28 +33 51.9 09 27.30 +33 38.9 2.034 2.976 -1.01 - 3.2 18.1 13.0/257 158.8 6.9 165/0.61 32 .98 24 09 14.20 +33 19.7 09 17.25 +33 07.1 2.124 3.029 -0.79 - 4.8 18.4 11.1/245 151.3 9.0 141/0.77 150 .19 Mar. 6 09 06.26 +32 31.5 09 09.31 +32 19.3 2.239 3.082 -0.54 - 6.0 18.6 9.1/229 142.0 11.4 128/0.93 63 .42 16 09 00.91 +31 31.3 09 03.95 +31 19.3 2.378 3.135 -0.27 - 6.8 18.8 7.6/207 132.4 13.6 120/1.04 66 .97 26 08 58.22 +30 23.2 09 01.24 +30 11.4 2.534 3.188 -0.02 - 7.3 19.1 7.3/182 122.9 15.2 115/1.10 167 .16 Apr. 5 08 58.03 +29 10.3 09 01.03 +28 58.5 2.706 3.240 +0.20 - 7.6 19.3 8.0/161 113.7 16.4 112/1.12 26 .49 15 09 00.06 +27 54.7 09 03.04 +27 42.8 2.888 3.293 +0.39 - 7.7 19.6 9.3/146 105.0 17.1 110/1.10 97 .96 25 09 03.97 +26 37.8 09 06.91 +26 25.7 3.076 3.345 +0.54 - 7.8 19.8 10.7/136 96.6 17.4 108/1.05 135 .11 May 5 09 09.42 +25 20.1 09 12.34 +25 07.7 3.268 3.396 +0.67 - 7.9 20.0 12.0/130 88.6 17.3 107/0.98 8 .54 15 09 16.13 +24 01.9 09 19.02 +23 49.2 3.461 3.447 +0.77 - 7.9 20.3 13.2/126 80.8 16.8 107/0.91 125 .95 25 09 23.83 +22 43.3 09 26.68 +22 30.3 3.651 3.498 +0.84 - 7.9 20.5 14.2/124 73.3 16.1 106/0.83 103 .07 June 4 09 32.30 +21 24.3 09 35.12 +21 10.9 3.837 3.549 +0.90 - 8.0 20.7 15.0/122 66.1 15.1 106/0.74 34 .58 14 09 41.37 +20 04.9 09 44.16 +19 51.1 4.015 3.599 +0.95 - 8.0 20.9 15.6/120 59.0 14.0 106/0.66 152 .93 24 09 50.87 +18 45.0 09 53.63 +18 30.8 4.185 3.648 +0.98 - 8.1 21.0 16.2/120 52.0 12.7 106/0.57 71 .03 July 4 10 00.70 +17 24.6 10 03.43 +17 10.1 4.344 3.698 +1.00 - 8.1 21.2 16.5/119 45.2 11.2 105/0.49 59 .61 14 10 10.74 +16 04.0 10 13.45 +15 49.1 4.490 3.746 +1.01 - 8.1 21.4 16.8/119 38.4 9.7 105/0.41 177 .89 24 10 20.91 +14 43.1 10 23.59 +14 27.9 4.622 3.795 +1.02 - 8.1 21.5 16.9/118 31.6 8.1 105/0.33 42 .01 Aug. 3 10 31.13 +13 22.1 10 33.79 +13 06.6 4.739 3.843 +1.02 - 8.1 21.6 17.0/118 24.9 6.4 104/0.26 82 .64 13 10 41.35 +12 01.4 10 43.99 +11 45.6 4.840 3.890 +1.01 - 8.1 21.8 16.9/118 18.2 4.7 102/0.18 150 .84 23 10 51.49 +10 41.1 10 54.11 +10 25.1 4.923 3.937 +1.00 - 8.0 21.9 16.8/118 11.5 2.9 97/0.11 14 .00 Sept. 2 11 01.51 +09 21.5 11 04.12 +09 05.3 4.987 3.983 +0.98 - 7.9 22.0 16.6/118 5.1 1.3 78/0.05 105 .66 12 11 11.35 +08 03.0 11 13.94 +07 46.6 5.033 4.029 +0.96 - 7.7 22.1 16.2/118 3.8 0.9 337/0.04 119 .77 22 11 20.95 +06 45.9 11 23.54 +06 29.4 5.059 4.075 +0.93 - 7.5 22.2 15.8/118 10.1 2.5 307/0.09 12 .00 Oct. 2 11 30.26 +05 30.7 11 32.84 +05 14.1 5.066 4.120 +0.89 - 7.3 22.2 15.2/119 17.1 4.1 300/0.16 130 .70 12 11 39.20 +04 17.8 11 41.77 +04 01.1 5.052 4.164 +0.85 - 7.0 22.3 14.5/119 24.4 5.7 298/0.22 88 .69 22 11 47.71 +03 07.6 11 50.27 +02 50.9 5.020 4.208 +0.80 - 6.7 22.4 13.7/119 31.9 7.2 296/0.27 37 .00 Nov. 1 11 55.69 +02 00.8 11 58.25 +01 44.1 4.969 4.251 +0.74 - 6.3 22.4 12.7/120 39.6 8.6 295/0.33 158 .73 11 12 03.05 +00 57.8 12 05.61 +00 41.1 4.901 4.294 +0.66 - 5.9 22.4 11.6/120 47.5 9.8 295/0.38 58 .63 21 12 09.70 -00 00.7 12 12.26 -00 17.4 4.817 4.337 +0.58 - 5.3 22.5 10.2/122 55.6 10.8 294/0.43 64 .01 Dec. 1 12 15.51 -00 54.1 12 18.07 -01 10.8 4.719 4.379 +0.48 - 4.8 22.5 8.7/123 64.1 11.7 294/0.47 171 .78 11 12 20.35 -01 41.8 12 22.92 -01 58.5 4.610 4.420 +0.37 - 4.1 22.5 7.0/126 72.8 12.3 293/0.51 27 .59 21 12 24.10 -02 23.2 12 26.66 -02 39.8 4.493 4.461 +0.25 - 3.4 22.5 5.1/132 81.8 12.6 293/0.53 92 .01 31 12 26.60 -02 57.4 12 29.17 -03 14.0 4.372 4.501 +0.12 - 2.7 22.5 3.2/147 91.2 12.6 293/0.55 136 .84 2026 Jan. 10 12 27.76 -03 23.9 12 30.34 -03 40.5 4.251 4.541 -0.03 - 1.8 22.5 1.9/193 101.0 12.3 293/0.55 4 .56 20 12 27.48 -03 42.2 12 30.05 -03 58.8 4.134 4.581 -0.18 - 1.0 22.5 2.8/250 111.1 11.6 294/0.53 125 .01 30 12 25.70 -03 51.9 12 28.27 -04 08.5 4.027 4.620 -0.32 - 0.1 22.5 4.8/269 121.6 10.5 294/0.49 98 .89 Feb. 9 12 22.47 -03 53.0 12 25.04 -04 09.6 3.935 4.658 -0.46 + 0.7 22.5 6.9/276 132.5 9.0 295/0.43 37 .55 19 12 17.90 -03 45.9 12 20.47 -04 02.5 3.863 4.696 -0.57 + 1.4 22.5 8.6/280 143.6 7.2 296/0.35 162 .03 Mar. 1 12 12.23 -03 31.5 12 14.80 -03 48.2 3.816 4.733 -0.64 + 2.0 22.5 9.8/282 155.1 5.1 298/0.25 56 .93