メタデータ
| 項目 |
値 |
| Designation |
P/2023 T1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-05-22T21:33:12.375360Z |
| Orbit solution date (soln_date, UTC) |
2024-01-19T23:44:32Z |
| Obs used |
118 |
| NEO |
- |
| M1 |
6.700 |
| K1 |
24.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-10-09T10:51:57.686400Z |
| Discovery magnitude (MPC) |
20.43 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2023-10-25.0000000 |
| e |
0.33527882 |
| q (au) |
2.816851 |
| a (au) |
4.237642 |
| i (deg) |
6.605954 |
| Ω (om, deg) |
249.585164 |
| ω (w, deg) |
202.871185 |
| M (ma, deg) |
336.171856 |
等級
散乱 + 全体線形
$$
M_a = (10.590 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.590 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.896 |
| k |
1.000 |
| δ90 |
10.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
13:55:58.27 |
-17:54:15.3 |
HIP 67938 |
19.57 |
| 2026-03-26 12:00 |
13:55:42.94 |
-17:52:54.8 |
HIP 67938 |
15.78 |
| 2026-03-27 00:00 |
13:55:27.46 |
-17:51:33.1 |
HIP 67938 |
12.00 |
| 2026-03-27 12:00 |
13:55:11.85 |
-17:50:10.1 |
HIP 67938 |
8.33 |
| 2026-03-28 00:00 |
13:54:56.10 |
-17:48:46.0 |
HIP 67938 |
5.09 |
| 2026-03-28 12:00 |
13:54:40.23 |
-17:47:20.6 |
HIP 67938 |
3.80 |
| 2026-03-29 00:00 |
13:54:24.22 |
-17:45:53.9 |
HIP 67938 |
5.99 |
| 2026-03-29 12:00 |
13:54:08.09 |
-17:44:26.1 |
HIP 67938 |
9.54 |
| 2026-03-30 00:00 |
13:53:51.84 |
-17:42:57.2 |
HIP 67938 |
13.45 |
| 2026-03-30 12:00 |
13:53:35.47 |
-17:41:27.0 |
HIP 67938 |
17.50 |
| 2026-03-31 00:00 |
13:53:18.99 |
-17:39:55.7 |
HIP 67938 |
21.63 |
| 2026-03-31 12:00 |
13:53:02.39 |
-17:38:23.3 |
HIP 67938 |
25.81 |
| 2026-04-01 00:00 |
13:52:45.68 |
-17:36:49.7 |
HIP 67938 |
30.05 |
| 2026-04-01 12:00 |
13:52:28.87 |
-17:35:15.0 |
HIP 67938 |
34.32 |
| 2026-04-02 00:00 |
13:52:11.96 |
-17:33:39.2 |
HIP 67896 |
38.42 |
| 2026-04-02 12:00 |
13:51:54.94 |
-17:32:02.3 |
HIP 67514 |
40.58 |
| 2026-04-03 00:00 |
13:51:37.83 |
-17:30:24.3 |
HIP 67514 |
36.71 |
| 2026-04-03 12:00 |
13:51:20.63 |
-17:28:45.3 |
HIP 67514 |
32.94 |
| 2026-04-04 00:00 |
13:51:03.33 |
-17:27:05.2 |
HIP 67514 |
29.33 |
| 2026-04-04 12:00 |
13:50:45.96 |
-17:25:24.1 |
HIP 67514 |
25.95 |
| 2026-04-05 00:00 |
13:50:28.49 |
-17:23:41.9 |
HIP 67514 |
22.94 |
| 2026-04-05 12:00 |
13:50:10.95 |
-17:21:58.8 |
HIP 67514 |
20.46 |
| 2026-04-06 00:00 |
13:49:53.33 |
-17:20:14.6 |
HIP 67514 |
18.75 |
| 2026-04-06 12:00 |
13:49:35.64 |
-17:18:29.5 |
HIP 67514 |
18.04 |
| 2026-04-07 00:00 |
13:49:17.88 |
-17:16:43.5 |
HIP 67514 |
18.47 |
| 2026-04-07 12:00 |
13:49:00.06 |
-17:14:56.5 |
HIP 67403 |
16.29 |
| 2026-04-08 00:00 |
13:48:42.17 |
-17:13:08.5 |
HIP 67403 |
14.48 |
| 2026-04-08 12:00 |
13:48:24.22 |
-17:11:19.7 |
HIP 67403 |
14.04 |
| 2026-04-09 00:00 |
13:48:06.22 |
-17:09:30.0 |
HIP 67274 |
12.97 |
| 2026-04-09 12:00 |
13:47:48.17 |
-17:07:39.4 |
HIP 67274 |
8.28 |
| 2026-04-10 00:00 |
13:47:30.06 |
-17:05:48.0 |
HIP 67274 |
3.58 |
| 2026-04-10 12:00 |
13:47:11.92 |
-17:03:55.7 |
HIP 67274 |
1.17 |
| 2026-04-11 00:00 |
13:46:53.73 |
-17:02:02.6 |
HIP 67274 |
5.89 |
| 2026-04-11 12:00 |
13:46:35.51 |
-17:00:08.7 |
HIP 67274 |
10.64 |
| 2026-04-12 00:00 |
13:46:17.25 |
-16:58:14.1 |
HIP 67274 |
15.41 |
| 2026-04-12 12:00 |
13:45:58.96 |
-16:56:18.7 |
HIP 67274 |
20.19 |
| 2026-04-13 00:00 |
13:45:40.65 |
-16:54:22.5 |
HIP 67055 |
17.24 |
| 2026-04-13 12:00 |
13:45:22.31 |
-16:52:25.7 |
HIP 67055 |
12.63 |
| 2026-04-14 00:00 |
13:45:03.96 |
-16:50:28.1 |
HIP 67055 |
8.22 |
| 2026-04-14 12:00 |
13:44:45.59 |
-16:48:29.9 |
HIP 67055 |
4.70 |
| 2026-04-15 00:00 |
13:44:27.21 |
-16:46:31.0 |
HIP 67055 |
4.79 |
| 2026-04-15 12:00 |
13:44:08.82 |
-16:44:31.5 |
HIP 67055 |
8.40 |
| 2026-04-16 00:00 |
13:43:50.43 |
-16:42:31.4 |
HIP 67055 |
12.85 |