117P/Helin-Roman-Alu 1 Orbit by S. Nakano NK 4669 (2022) Observed in 2nd half of 2022
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2022 July 8.96608 3.0414989 0.2559560 8.26 223.20818 58.82281 8.70440 0.200 2023 Sep. 13.0 m1 = 1.5 + 5 log Delta + 21.0 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 , ¡ ¡ ¡ ¡ ¡ ¡ 2022 Dec. 27 20 42.16 -25 17.2 20 45.12 -25 06.3 3.938 3.156 +1.58 + 6.5 15.0 22.5/ 74 32.8 9.7 86/0.46 18 .18 2023 Jan. 6 20 57.96 -24 12.7 21 00.88 -24 00.9 4.018 3.169 +1.57 + 6.9 15.0 22.7/ 73 26.5 8.0 88/0.37 144 .99 16 21 13.73 -23 04.0 21 16.60 -22 51.4 4.086 3.183 +1.56 + 7.3 15.1 22.9/ 72 20.4 6.2 91/0.28 98 .41 26 21 29.39 -21 51.7 21 32.22 -21 38.5 4.140 3.197 +1.54 + 7.6 15.2 22.9/ 71 14.6 4.4 99/0.20 44 .23 Feb. 5 21 44.86 -20 36.6 21 47.65 -20 22.6 4.180 3.212 +1.52 + 7.8 15.2 22.8/ 71 9.4 2.9 117/0.13 165 .99 15 22 00.09 -19 19.3 22 02.84 -19 04.7 4.206 3.227 +1.49 + 7.9 15.3 22.6/ 70 6.7 2.0 159/0.09 73 .36 25 22 15.02 -18 00.5 22 17.74 -17 45.5 4.217 3.243 +1.46 + 8.0 15.4 22.3/ 70 8.9 2.7 202/0.13 69 .27 Mar. 7 22 29.62 -16 41.2 22 32.31 -16 25.7 4.214 3.260 +1.42 + 7.9 15.4 22.0/ 69 13.9 4.2 220/0.19 173 1.00 17 22 43.83 -15 22.1 22 46.49 -15 06.3 4.196 3.277 +1.38 + 7.8 15.4 21.5/ 69 19.7 5.9 228/0.27 46 .29 27 22 57.62 -14 04.2 23 00.26 -13 48.1 4.165 3.294 +1.33 + 7.6 15.5 20.9/ 69 25.7 7.5 233/0.35 91 .30 Apr. 6 23 10.94 -12 48.2 23 13.55 -12 31.9 4.119 3.312 +1.28 + 7.3 15.5 20.2/ 69 31.9 9.2 236/0.43 151 1.00 16 23 23.75 -11 35.1 23 26.35 -11 18.6 4.061 3.330 +1.22 + 7.0 15.5 19.3/ 69 38.2 10.7 238/0.50 18 .22 26 23 35.99 -10 25.7 23 38.57 -10 09.1 3.990 3.349 +1.16 + 6.5 15.5 18.3/ 70 44.6 12.2 239/0.58 114 .32 May 6 23 47.60 -09 20.9 23 50.17 -09 04.2 3.907 3.368 +1.09 + 5.9 15.5 17.2/ 70 51.2 13.5 240/0.65 125 1.00 16 23 58.51 -08 21.5 00 01.07 -08 04.8 3.815 3.387 +1.01 + 5.3 15.5 15.9/ 71 57.9 14.6 242/0.72 13 .15 26 00 08.63 -07 28.4 00 11.18 -07 11.7 3.713 3.407 +0.92 + 4.6 15.5 14.5/ 72 64.8 15.6 243/0.79 137 .35 June 5 00 17.85 -06 42.5 00 20.40 -06 25.8 3.605 3.427 +0.82 + 3.8 15.5 12.8/ 73 71.9 16.3 244/0.85 96 .99 15 00 26.06 -06 04.6 00 28.61 -05 48.0 3.490 3.447 +0.71 + 2.9 15.5 10.9/ 75 79.2 16.8 245/0.90 42 .10 25 00 33.13 -05 35.5 00 35.68 -05 19.0 3.372 3.468 +0.58 + 1.9 15.5 8.8/ 77 86.9 17.0 246/0.94 162 .37 July 5 00 38.90 -05 15.9 00 41.44 -04 59.5 3.253 3.489 +0.43 + 0.9 15.5 6.5/ 82 94.8 16.9 247/0.97 63 .96 15 00 43.23 -05 06.4 00 45.77 -04 50.0 3.135 3.510 +0.27 - 0.1 15.4 4.1/ 91 103.2 16.4 249/0.97 73 .07 25 00 45.95 -05 07.3 00 48.49 -04 50.9 3.023 3.531 +0.10 - 1.1 15.4 1.9/127 112.0 15.5 251/0.95 166 .41 Aug. 4 00 46.94 -05 18.3 00 49.49 -05 02.0 2.919 3.553 -0.08 - 2.1 15.4 2.4/210 121.2 14.1 253/0.90 27 .92 14 00 46.16 -05 38.9 00 48.70 -05 22.5 2.828 3.574 -0.26 - 2.8 15.4 4.8/233 130.9 12.4 255/0.81 106 .05 24 00 43.59 -06 07.4 00 46.13 -05 51.0 2.754 3.596 -0.42 - 3.4 15.4 7.1/241 140.9 10.2 259/0.69 132 .46 Sept. 3 00 39.42 -06 41.4 00 41.95 -06 24.9 2.701 3.618 -0.55 - 3.6 15.4 9.0/246 151.2 7.7 265/0.53 17 .88 13 00 33.92 -07 17.7 00 36.46 -07 01.2 2.673 3.640 -0.64 - 3.5 15.4 10.1/250 161.2 5.1 278/0.36 141 .04 23 00 27.56 -07 52.5 00 30.10 -07 36.0 2.672 3.662 -0.66 - 2.9 15.5 10.3/253 169.1 3.0 312/0.21 91 .52 Oct. 3 00 20.91 -08 21.9 00 23.45 -08 05.3 2.700 3.684 -0.64 - 2.1 15.5 9.7/257 168.0 3.2 13/0.22 56 .84 13 00 14.55 -08 42.8 00 17.10 -08 26.1 2.756 3.707 -0.55 - 1.0 15.7 8.2/263 159.3 5.5 40/0.37 173 .03 23 00 09.04 -08 52.7 00 11.60 -08 36.0 2.841 3.729 -0.42 + 0.2 15.8 6.3/272 149.0 7.9 51/0.52 49 .60 Nov. 2 00 04.82 -08 50.7 00 07.38 -08 34.0 2.950 3.751 -0.27 + 1.4 15.9 4.2/289 138.5 10.1 56/0.64 93 .81 12 00 02.14 -08 36.7 00 04.70 -08 20.0 3.080 3.774 -0.10 + 2.5 16.1 2.9/330 128.3 11.9 60/0.72 144 .02 22 00 01.14 -08 11.5 00 03.70 -07 54.8 3.227 3.796 +0.07 + 3.5 16.2 3.7/ 16 118.3 13.2 62/0.77 9 .67 Dec. 2 00 01.82 -07 36.1 00 04.38 -07 19.4 3.386 3.819 +0.23 + 4.4 16.4 5.5/ 37 108.7 14.2 64/0.78 126 .79 12 00 04.07 -06 52.0 00 06.63 -06 35.3 3.555 3.842 +0.37 + 5.2 16.5 7.6/ 47 99.5 14.6 65/0.77 111 .01 22 00 07.78 -06 00.5 00 10.34 -05 43.8 3.727 3.864 +0.50 + 5.8 16.7 9.4/ 52 90.6 14.7 66/0.74 29 .74 2024 Jan. 1 00 12.76 -05 02.8 00 15.32 -04 46.1 3.900 3.887 +0.61 + 6.3 16.8 11.1/ 56 81.9 14.5 67/0.70 154 .78 11 00 18.86 -04 00.1 00 21.41 -03 43.4 4.071 3.909 +0.71 + 6.7 17.0 12.5/ 58 73.6 14.0 68/0.65 80 .01 21 00 25.91 -02 53.5 00 28.47 -02 36.9 4.236 3.931 +0.79 + 6.9 17.1 13.7/ 59 65.5 13.2 69/0.59 60 .79 31 00 33.76 -01 43.9 00 36.32 -01 27.4 4.392 3.954 +0.85 + 7.2 17.3 14.6/ 61 57.6 12.2 70/0.52 176 .77 Feb. 10 00 42.28 -00 32.2 00 44.84 -00 15.8 4.538 3.976 +0.91 + 7.3 17.4 15.4/ 62 50.0 11.0 71/0.46 49 .00 20 00 51.35 +00 40.7 00 53.92 +00 57.0 4.671 3.998 +0.95 + 7.3 17.5 16.0/ 63 42.5 9.6 72/0.39 88 .82 Mar. 1 01 00.86 +01 54.2 01 03.43 +02 10.3 4.790 4.020 +0.99 + 7.3 17.6 16.5/ 64 35.1 8.1 74/0.32 155 .75 11 01 10.72 +03 07.6 01 13.30 +03 23.5 4.894 4.043 +1.01 + 7.2 17.7 16.8/ 64 27.9 6.6 76/0.25 19 .01 21 01 20.84 +04 20.3 01 23.43 +04 35.9 4.980 4.064 +1.03 + 7.1 17.8 17.0/ 65 20.8 5.0 79/0.19 113 .84 31 01 31.14 +05 31.6 01 33.75 +05 47.0 5.049 4.086 +1.04 + 6.9 17.9 17.0/ 66 13.9 3.4 85/0.12 129 .72