P/2021 L4 (PANSTARRS) Orbit by S. Nakano unpublished (2021) Observed in 2nd half of 2021
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2025 Apr. 21.10871 2.7905016 0.1184244 5.63 234.51978 243.22010 16.96059 0.200 2022 Aug. 9.0 m1 = 13.0 + 5 log Delta + 10.0 log r Date/ 0h TT R.A.(1950) Decl. R.A.(2000) Decl. Delta r Variation Magnitude Mot./PA Elong. P PA/Tail Moon Age h m ¡ , h m ¡ , for T=+1 day m1 , ¡ ¡ ¡ ¡ ¡ ¡ 2022 Jan. 1 18 12.23 -16 55.2 18 15.13 -16 54.2 4.463 3.496 -0.45 - 1.9 21.7 19.9/ 83 9.2 2.6 313/0.11 20 .05 11 18 25.93 -16 29.1 18 28.82 -16 27.1 4.441 3.501 -0.45 - 2.0 21.7 19.6/ 81 15.1 4.2 294/0.18 117 .62 21 18 39.36 -15 56.9 18 42.24 -15 54.0 4.402 3.506 -0.44 - 2.1 21.7 19.3/ 79 21.5 5.9 284/0.26 124 .91 31 18 52.43 -15 18.8 18 55.29 -15 14.9 4.346 3.510 -0.44 - 2.2 21.6 18.8/ 77 28.3 7.6 279/0.34 16 .02 Feb. 10 19 05.04 -14 34.9 19 07.88 -14 30.1 4.274 3.514 -0.44 - 2.3 21.6 18.2/ 74 35.1 9.3 275/0.41 139 .63 20 19 17.06 -13 45.7 19 19.88 -13 40.1 4.188 3.517 -0.45 - 2.4 21.6 17.4/ 72 42.1 10.9 272/0.49 98 .88 Mar. 2 19 28.42 -12 51.6 19 31.21 -12 45.2 4.088 3.521 -0.45 - 2.5 21.5 16.5/ 69 49.2 12.3 269/0.57 41 .01 12 19 38.97 -11 53.2 19 41.74 -11 46.1 3.976 3.524 -0.46 - 2.6 21.5 15.5/ 66 56.4 13.6 266/0.65 158 .64 22 19 48.61 -10 51.1 19 51.36 -10 43.4 3.853 3.527 -0.47 - 2.7 21.4 14.3/ 63 63.7 14.7 264/0.72 70 .84 Apr. 1 19 57.22 -09 46.0 19 59.95 -09 37.7 3.722 3.529 -0.48 - 2.8 21.3 12.9/ 59 71.2 15.5 262/0.78 69 .00 11 20 04.65 -08 38.9 20 07.35 -08 30.2 3.586 3.532 -0.49 - 3.0 21.3 11.4/ 53 78.9 16.2 260/0.84 162 .66 21 20 10.77 -07 30.7 20 13.45 -07 21.6 3.446 3.534 -0.51 - 3.1 21.2 9.7/ 45 86.7 16.5 258/0.89 39 .77 May 1 20 15.42 -06 22.7 20 18.09 -06 13.3 3.305 3.536 -0.53 - 3.2 21.1 8.1/ 34 94.8 16.5 255/0.93 97 .00 11 20 18.47 -05 16.1 20 21.11 -05 06.5 3.167 3.537 -0.56 - 3.3 21.0 6.7/ 17 103.2 16.1 253/0.95 139 .69 21 20 19.78 -04 12.5 20 22.41 -04 02.9 3.034 3.538 -0.58 - 3.4 20.9 5.9/352 111.9 15.4 250/0.94 20 .70 31 20 19.27 -03 13.8 20 21.89 -03 04.2 2.911 3.539 -0.61 - 3.5 20.8 6.3/325 120.8 14.2 246/0.91 125 .00 June 10 20 16.90 -02 22.0 20 19.50 -02 12.5 2.801 3.540 -0.64 - 3.7 20.7 7.5/304 130.0 12.7 242/0.84 107 .74 20 20 12.77 -01 39.1 20 15.36 -01 29.9 2.709 3.540 -0.67 - 3.8 20.7 9.1/290 139.1 10.8 235/0.74 44 .62 30 20 07.08 -01 07.3 20 09.66 -00 58.4 2.637 3.540 -0.69 - 3.9 20.6 10.5/280 147.9 8.8 224/0.62 152 .01 July 10 20 00.20 -00 47.9 20 02.78 -00 39.4 2.590 3.540 -0.71 - 4.0 20.6 11.3/273 155.5 6.8 207/0.49 70 .80 20 19 52.68 -00 41.7 19 55.25 -00 33.7 2.568 3.540 -0.72 - 4.0 20.5 11.4/266 159.8 5.7 179/0.41 81 .56 30 19 45.11 -00 48.2 19 47.68 -00 40.8 2.574 3.539 -0.71 - 4.0 20.5 10.6/260 158.5 6.0 147/0.43 147 .02 Aug. 9 19 38.13 -01 06.1 19 40.71 -00 59.1 2.607 3.538 -0.70 - 4.0 20.6 9.1/253 152.5 7.6 124/0.54 33 .86 19 19 32.32 -01 32.7 19 34.90 -01 26.1 2.666 3.536 -0.68 - 3.9 20.6 7.1/243 144.2 9.6 110/0.67 116 .52 29 19 28.07 -02 05.3 19 30.67 -01 58.9 2.746 3.535 -0.66 - 3.8 20.7 5.0/225 135.1 11.6 102/0.79 116 .03 Sept. 8 19 25.67 -02 40.7 19 28.28 -02 34.5 2.846 3.533 -0.63 - 3.6 20.8 3.6/191 125.9 13.4 95/0.87 30 .92 18 19 25.22 -03 16.1 19 27.84 -03 09.9 2.961 3.531 -0.60 - 3.5 20.8 4.0/146 116.8 14.7 91/0.92 145 .49 28 19 26.69 -03 49.2 19 29.32 -03 43.0 3.088 3.528 -0.57 - 3.3 20.9 5.7/120 108.0 15.7 87/0.94 83 .05 Oct. 8 19 30.00 -04 18.2 19 32.64 -04 11.7 3.221 3.526 -0.54 - 3.2 21.0 7.8/107 99.4 16.2 84/0.94 59 .96 18 19 34.98 -04 41.6 19 37.62 -04 34.8 3.359 3.523 -0.52 - 3.0 21.1 9.8/100 91.1 16.4 80/0.91 158 .47 28 19 41.45 -04 58.4 19 44.10 -04 51.2 3.497 3.519 -0.50 - 2.9 21.2 11.7/ 94 83.1 16.3 78/0.87 52 .08 Nov. 7 19 49.25 -05 07.8 19 51.90 -05 00.1 3.633 3.516 -0.48 - 2.8 21.3 13.3/ 91 75.4 15.8 75/0.82 88 .98 17 19 58.16 -05 09.4 20 00.81 -05 01.1 3.764 3.512 -0.47 - 2.7 21.3 14.8/ 87 67.8 15.1 72/0.75 146 .46 27 20 08.04 -05 02.9 20 10.68 -04 54.0 3.887 3.508 -0.46 - 2.6 21.4 16.0/ 85 60.5 14.2 69/0.69 26 .13 Dec. 7 20 18.70 -04 48.2 20 21.34 -04 38.6 4.001 3.504 -0.45 - 2.6 21.5 17.1/ 82 53.4 13.0 65/0.62 113 .99 17 20 30.01 -04 25.3 20 32.64 -04 15.0 4.103 3.499 -0.44 - 2.5 21.5 18.0/ 80 46.5 11.8 61/0.54 125 .44 27 20 41.84 -03 54.4 20 44.46 -03 43.5 4.193 3.494 -0.43 - 2.5 21.5 18.7/ 78 39.8 10.4 57/0.47 23 .18 2023 Jan. 6 20 54.05 -03 15.8 20 56.66 -03 04.2 4.269 3.489 -0.43 - 2.5 21.6 19.3/ 76 33.3 8.9 52/0.40 135 .99 16 21 06.54 -02 29.8 21 09.13 -02 17.6 4.330 3.484 -0.42 - 2.4 21.6 19.7/ 74 27.1 7.4 44/0.32 102 .41 26 21 19.22 -01 37.0 21 21.80 -01 24.1 4.376 3.478 -0.42 - 2.4 21.6 20.0/ 73 21.5 5.9 34/0.26 43 .23 Feb. 5 21 31.99 -00 37.7 21 34.56 -00 24.3 4.405 3.472 -0.42 - 2.4 21.6 20.3/ 71 16.7 4.7 19/0.20 154 .99 15 21 44.78 +00 27.3 21 47.34 +00 41.3 4.418 3.466 -0.42 - 2.4 21.6 20.4/ 70 13.7 3.9 355/0.17 78 .36 25 21 57.52 +01 37.6 22 00.07 +01 52.0 4.414 3.460 -0.43 - 2.4 21.6 20.3/ 68 13.5 3.8 326/0.17 66 .27 Mar. 7 22 10.15 +02 52.5 22 12.69 +03 07.3 4.394 3.453 -0.43 - 2.4 21.6 20.2/ 67 16.3 4.6 302/0.20 162 1.00 17 22 22.60 +04 11.2 22 25.13 +04 26.5 4.358 3.446 -0.44 - 2.4 21.6 20.0/ 66 20.8 5.9 286/0.26 52 .29 27 22 34.83 +05 33.2 22 37.35 +05 48.8 4.307 3.439 -0.45 - 2.4 21.5 19.7/ 64 26.1 7.3 277/0.33 88 .30 Apr. 6 22 46.75 +06 57.8 22 49.27 +07 13.7 4.241 3.432 -0.46 - 2.4 21.5 19.3/ 63 31.9 8.9 270/0.40 149 1.00 16 22 58.33 +08 24.3 23 00.85 +08 40.4 4.161 3.424 -0.47 - 2.4 21.4 18.7/ 62 37.9 10.4 265/0.48 27 .22 26 23 09.50 +09 51.9 23 12.02 +10 08.3 4.068 3.417 -0.48 - 2.4 21.4 18.0/ 60 44.0 11.8 261/0.56 109 .32 May 6 23 20.17 +11 20.0 23 22.69 +11 36.5 3.963 3.409 -0.50 - 2.3 21.3 17.2/ 59 50.3 13.2 258/0.63 127 1.00 16 23 30.27 +12 47.9 23 32.80 +13 04.5 3.847 3.400 -0.52 - 2.3 21.2 16.3/ 57 56.8 14.4 256/0.71 20 .15