C/2023 T3 (Fuls)
メタデータ
| 項目 | 値 |
|---|---|
| Designation | C/2023 T3 (Fuls) |
| Type | C |
| Perihelion (tp_cal, UTC) | 2025-01-25T08:17:25.160640Z |
| Orbit solution date (soln_date, UTC) | 2026-03-07T14:42:54Z |
| Obs used | 1357 |
| NEO | - |
| M1 | 10.000 |
| K1 | 7.250 |
| PC | 0.030 |
| Discovery observation (MPC, UTC) | 2023-10-15T11:19:47.798400Z |
| Discovery magnitude (MPC) | 18.55 G |
| Discovery observatory (MPC) | G96 · Mt. Lemmon Survey |
オスキュレーティング軌道要素
| 項目 | 値 |
|---|---|
| Epoch (epoch_cal, TDB) | 2024-11-05.0000000 |
| e | 0.99538546 |
| q (au) | 3.548295 |
| a (au) | 768.937709 |
| i (deg) | 27.222046 |
| Ω (om, deg) | 246.000521 |
| ω (w, deg) | 302.847384 |
| M (ma, deg) | 359.996240 |
等級
散乱 + 全体線形
$$ M_a = (8.924 + 3.319\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
モデル定数
| 項目 | 値 |
|---|---|
| H0 | 8.924 |
| n | 3.319 |
| gf | 0.860 |
| gb | -1.000 |
| k | 1.000 |
| δ90 | 1.000 |
| パラメータ | 記号 | 範囲 | 説明 |
|---|---|---|---|
| 太陽・地球距離が1 AUのときの絶対等級 | H0 | -5 to 20 | 彗星の固有の明るさ |
| 測光スロープパラメータ | n | 2 to 6 | 太陽距離に対する明るさ変化率 |
| 前方散乱非対称係数 | gf |
0.8 to 1 | 前方散乱の強さ |
| 後方散乱非対称係数 | gb |
-1 to -0.5 | 後方散乱の強さ |
| 分配係数 | k | 0.8 to 1 | 前方/後方散乱の寄与比 |
| ダスト/ガス明るさ比 | δ90 | 1 to 10 | ダスト散乱とガス放射の相対寄与 |
参考: EPSC-DPS2025-160
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) | 終了日 (UTC) | a | b |
|---|---|---|---|
| 2023-09-09 | 2024-02-27 | +9.6055 | -6.607 |
| 2024-02-27 | 2025-01-24 | -2.8861 | +1.593 |
| 2025-01-26 | 2025-08-17 | -8.0293 | +4.556 |
| 2025-08-17 | 2026-02-25 | +5.9060 | -4.079 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
ファインディングチャート
天体暦
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-05-12 00:00 | 17:41:42.04 | -15:16:34.0 | HIP 86683 | 22.03 |
| 2026-05-12 12:00 | 17:41:31.35 | -15:14:38.8 | HIP 86496 | 22.28 |
| 2026-05-13 00:00 | 17:41:20.54 | -15:12:43.8 | HIP 86496 | 22.34 |
| 2026-05-13 12:00 | 17:41:09.59 | -15:10:49.0 | HIP 86496 | 22.85 |
| 2026-05-14 00:00 | 17:40:58.52 | -15:08:54.4 | HIP 86496 | 23.78 |
| 2026-05-14 12:00 | 17:40:47.32 | -15:07:00.1 | HIP 86496 | 25.10 |
| 2026-05-15 00:00 | 17:40:36.00 | -15:05:06.0 | HIP 86496 | 26.76 |
| 2026-05-15 12:00 | 17:40:24.56 | -15:03:12.2 | HIP 86496 | 28.71 |
| 2026-05-16 00:00 | 17:40:12.99 | -15:01:18.7 | HIP 86496 | 30.90 |
| 2026-05-16 12:00 | 17:40:01.32 | -14:59:25.4 | HIP 86496 | 33.29 |
| 2026-05-17 00:00 | 17:39:49.53 | -14:57:32.4 | HIP 86496 | 35.85 |
| 2026-05-17 12:00 | 17:39:37.62 | -14:55:39.7 | HIP 86496 | 38.54 |
| 2026-05-18 00:00 | 17:39:25.61 | -14:53:47.3 | HIP 86263 | 40.21 |
| 2026-05-18 12:00 | 17:39:13.49 | -14:51:55.2 | HIP 86263 | 39.82 |
| 2026-05-19 00:00 | 17:39:01.26 | -14:50:03.4 | HIP 86263 | 39.71 |
| 2026-05-19 12:00 | 17:38:48.94 | -14:48:11.9 | HIP 86263 | 39.89 |
| 2026-05-20 00:00 | 17:38:36.51 | -14:46:20.7 | HIP 86263 | 40.37 |
| 2026-05-20 12:00 | 17:38:23.98 | -14:44:29.8 | HIP 86279 | 38.15 |
| 2026-05-21 00:00 | 17:38:11.36 | -14:42:39.3 | HIP 86279 | 35.74 |
| 2026-05-21 12:00 | 17:37:58.65 | -14:40:49.1 | HIP 86099 | 32.69 |
| 2026-05-22 00:00 | 17:37:45.84 | -14:38:59.3 | HIP 86099 | 29.52 |
| 2026-05-22 12:00 | 17:37:32.95 | -14:37:09.8 | HIP 86099 | 26.44 |
| 2026-05-23 00:00 | 17:37:19.97 | -14:35:20.6 | HIP 86099 | 23.49 |
| 2026-05-23 12:00 | 17:37:06.91 | -14:33:31.8 | HIP 86099 | 20.74 |
| 2026-05-24 00:00 | 17:36:53.77 | -14:31:43.4 | HIP 86099 | 18.28 |
| 2026-05-24 12:00 | 17:36:40.55 | -14:29:55.4 | HIP 86099 | 16.25 |
| 2026-05-25 00:00 | 17:36:27.25 | -14:28:07.8 | HIP 86099 | 14.85 |
| 2026-05-25 12:00 | 17:36:13.88 | -14:26:20.5 | HIP 86099 | 14.27 |
| 2026-05-26 00:00 | 17:36:00.44 | -14:24:33.6 | HIP 86099 | 14.62 |
| 2026-05-26 12:00 | 17:35:46.93 | -14:22:47.2 | HIP 86099 | 15.85 |
| 2026-05-27 00:00 | 17:35:33.35 | -14:21:01.1 | HIP 86099 | 17.78 |
| 2026-05-27 12:00 | 17:35:19.70 | -14:19:15.4 | HIP 86099 | 20.22 |
| 2026-05-28 00:00 | 17:35:06.00 | -14:17:30.2 | HIP 86099 | 23.01 |
| 2026-05-28 12:00 | 17:34:52.24 | -14:15:45.4 | HIP 86099 | 26.05 |
| 2026-05-29 00:00 | 17:34:38.41 | -14:14:01.0 | HIP 86099 | 29.25 |
| 2026-05-29 12:00 | 17:34:24.54 | -14:12:17.0 | HIP 86099 | 32.59 |
| 2026-05-30 00:00 | 17:34:10.61 | -14:10:33.5 | HIP 86049 | 35.12 |
| 2026-05-30 12:00 | 17:33:56.63 | -14:08:50.5 | HIP 86049 | 35.08 |
| 2026-05-31 00:00 | 17:33:42.60 | -14:07:07.8 | HIP 86049 | 35.46 |
| 2026-05-31 12:00 | 17:33:28.53 | -14:05:25.7 | HIP 85939 | 35.56 |
| 2026-06-01 00:00 | 17:33:14.42 | -14:03:44.0 | HIP 85939 | 34.61 |
| 2026-06-01 12:00 | 17:33:00.26 | -14:02:02.8 | HIP 85871 | 33.20 |
| 2026-06-02 00:00 | 17:32:46.06 | -14:00:22.0 | HIP 85871 | 31.46 |