Ephemeris of C/2023 A3 (Tsuchinshan-ATLAS) at 10 hrs UTC (J2000) last astrometry was on 2023 Mar 6 (as at 2023 Mar 12) y m d h m s o ' " delta RSun Elong Phase Mag "/min PA 2024 May 31 12 3 52.0 2 33 41 1.791 2.337 109.7 24.1 10.0 1.36 276.3 2024 Jun 5 11 53 33.0 2 48 50 1.817 2.264 102.5 25.9 9.8 1.23 274.8 2024 Jun 10 11 44 15.8 2 58 23 1.845 2.190 95.5 27.5 9.7 1.10 273.0 2024 Jun 15 11 35 59.7 3 2 40 1.876 2.115 88.8 28.7 9.6 0.97 270.9 2024 Jun 20 11 28 41.9 3 2 4 1.908 2.039 82.4 29.6 9.5 0.85 268.4 2024 Jun 25 11 22 18.6 2 57 0 1.938 1.962 76.2 30.2 9.4 0.75 265.4 2024 Jun 30 11 16 45.3 2 47 51 1.967 1.884 70.2 30.5 9.2 0.65 261.8 2024 Jul 5 11 11 57.2 2 34 55 1.992 1.804 64.4 30.6 9.1 0.57 257.6 2024 Jul 10 11 7 49.1 2 18 31 2.014 1.723 58.8 30.3 8.9 0.50 252.6 2024 Jul 15 11 4 15.6 1 58 56 2.030 1.641 53.4 29.8 8.7 0.45 246.9 2024 Jul 20 11 1 11.5 1 36 25 2.039 1.558 48.1 29.1 8.5 0.41 240.8 2024 Jul 25 10 58 31.5 1 11 9 2.042 1.472 43.0 28.1 8.2 0.38 234.5 2024 Jul 30 10 56 11.0 0 43 16 2.037 1.386 38.0 26.8 8.0 0.37 228.6 2024 Aug 4 10 54 5.3 0 12 49 2.023 1.297 33.1 25.3 7.7 0.36 223.4 2024 Aug 9 10 52 9.2 - 0 20 6 2.000 1.207 28.3 23.5 7.3 0.37 219.6 2024 Aug 14 10 50 17.5 - 0 55 22 1.965 1.115 23.7 21.4 6.9 0.38 217.4 2024 Aug 19 10 48 24.9 - 1 32 55 1.919 1.021 19.4 19.2 6.5 0.40 216.6 2024 Aug 24 10 46 26.2 - 2 12 38 1.860 0.926 15.5 17.0 6.0 0.43 217.1 2024 Aug 29 10 44 16.6 - 2 54 19 1.786 0.829 12.5 15.3 5.4 0.45 218.7 2024 Sep 3 10 41 52.4 - 3 37 32 1.695 0.732 11.2 15.6 4.8 0.48 220.9 2024 Sep 8 10 39 14.3 - 4 21 16 1.584 0.636 12.3 19.6 4.0 0.49 223.0 2024 Sep 13 10 36 37.1 - 5 3 25 1.448 0.544 15.1 28.8 3.2 0.45 221.7 2024 Sep 18 10 34 57.3 - 5 39 38 1.285 0.464 18.8 44.1 2.2 0.26 193.5 2024 Sep 23 10 37 2.8 - 6 1 48 1.091 0.408 22.0 66.9 1.3 0.73 97.4 2024 Sep 28 10 49 39.4 - 5 57 40 0.875 0.392 22.8 97.1 0.6 2.68 86.1 2024 Oct 3 11 25 5.7 - 5 12 9 0.667 0.422 18.2 132.2 0.4 6.53 84.7 2024 Oct 8 12 38 34.0 - 3 22 15 0.516 0.487 5.1 169.4 0.4 11.94 84.0 2024 Oct 13 14 26 6.3 - 0 28 22 0.474 0.572 19.3 144.8 1.0 13.88 83.9 2024 Oct 18 16 2 21.9 1 55 9 0.549 0.665 38.9 109.9 1.9 9.83 85.0 2024 Oct 23 17 3 58.4 3 5 40 0.689 0.762 49.9 86.4 3.0 5.90 86.4 2024 Oct 28 17 41 23.5 3 35 21 0.856 0.859 54.8 70.8 4.0 3.68 87.6 2024 Nov 2 18 5 40.9 3 48 26 1.030 0.955 56.4 59.8 4.9 2.50 88.3 2024 Nov 7 18 22 48.3 3 55 26 1.204 1.050 56.2 51.6 5.6 1.83 88.5 2024 Nov 12 18 35 47.0 4 0 49 1.374 1.143 55.0 45.2 6.3 1.44 88.2 2024 Nov 17 18 46 12.9 4 6 30 1.540 1.235 53.2 39.9 6.9 1.18 87.5 2024 Nov 22 18 54 59.8 4 13 26 1.700 1.324 51.1 35.4 7.4 1.02 86.4 2024 Nov 27 19 2 39.8 4 22 5 1.854 1.412 48.7 31.6 7.8 0.90 84.9 2024 Dec 2 19 9 32.5 4 32 46 2.002 1.499 46.2 28.3 8.3 0.82 83.2 2024 Dec 7 19 15 50.0 4 45 34 2.143 1.583 43.6 25.4 8.7 0.76 81.3 2024 Dec 12 19 21 40.3 5 0 33 2.277 1.666 41.1 22.9 9.0 0.72 79.2 2024 Dec 17 19 27 8.7 5 17 41 2.405 1.748 38.6 20.6 9.3 0.68 77.1 2024 Dec 22 19 32 19.2 5 36 58 2.526 1.829 36.3 18.6 9.6 0.65 74.9 2024 Dec 27 19 37 14.3 5 58 24 2.640 1.908 34.2 16.8 9.9 0.63 72.6 2025 Jan 1 19 41 55.6 6 21 58 2.747 1.986 32.2 15.3 10.2 0.60 70.2