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) |
| 2026-07-29 00:00 |
13:32:30.37 |
-13:16:54.5 |
HIP 65949 |
21.27 |
| 2026-07-29 12:00 |
13:32:45.62 |
-13:17:44.9 |
HIP 65949 |
24.28 |
| 2026-07-30 00:00 |
13:33:01.00 |
-13:18:36.2 |
HIP 66235 |
21.32 |
| 2026-07-30 12:00 |
13:33:16.53 |
-13:19:28.4 |
HIP 66235 |
17.48 |
| 2026-07-31 00:00 |
13:33:32.19 |
-13:20:21.5 |
HIP 66235 |
13.63 |
| 2026-07-31 12:00 |
13:33:47.98 |
-13:21:15.4 |
HIP 66235 |
9.79 |
| 2026-08-01 00:00 |
13:34:03.91 |
-13:22:10.2 |
HIP 66235 |
6.05 |
| 2026-08-01 12:00 |
13:34:19.98 |
-13:23:05.9 |
HIP 66235 |
3.03 |
| 2026-08-02 00:00 |
13:34:36.17 |
-13:24:02.4 |
HIP 66235 |
3.76 |
| 2026-08-02 12:00 |
13:34:52.50 |
-13:24:59.8 |
HIP 66235 |
7.24 |
| 2026-08-03 00:00 |
13:35:08.96 |
-13:25:58.0 |
HIP 66343 |
9.76 |
| 2026-08-03 12:00 |
13:35:25.55 |
-13:26:57.0 |
HIP 66343 |
5.61 |
| 2026-08-04 00:00 |
13:35:42.28 |
-13:27:56.9 |
HIP 66343 |
1.47 |
| 2026-08-04 12:00 |
13:35:59.13 |
-13:28:57.6 |
HIP 66343 |
2.85 |
| 2026-08-05 00:00 |
13:36:16.11 |
-13:29:59.1 |
HIP 66343 |
7.08 |
| 2026-08-05 12:00 |
13:36:33.21 |
-13:31:01.5 |
HIP 66343 |
11.36 |
| 2026-08-06 00:00 |
13:36:50.45 |
-13:32:04.6 |
HIP 66343 |
15.68 |
| 2026-08-06 12:00 |
13:37:07.81 |
-13:33:08.6 |
HIP 66544 |
19.44 |
| 2026-08-07 00:00 |
13:37:25.29 |
-13:34:13.3 |
HIP 66544 |
15.21 |
| 2026-08-07 12:00 |
13:37:42.90 |
-13:35:18.9 |
HIP 66544 |
11.08 |
| 2026-08-08 00:00 |
13:38:00.64 |
-13:36:25.2 |
HIP 66544 |
7.27 |
| 2026-08-08 12:00 |
13:38:18.49 |
-13:37:32.3 |
HIP 66544 |
4.75 |
| 2026-08-09 00:00 |
13:38:36.48 |
-13:38:40.2 |
HIP 66544 |
5.71 |
| 2026-08-09 12:00 |
13:38:54.58 |
-13:39:48.8 |
HIP 66544 |
9.17 |
| 2026-08-10 00:00 |
13:39:12.80 |
-13:40:58.2 |
HIP 66544 |
13.33 |
| 2026-08-10 12:00 |
13:39:31.15 |
-13:42:08.4 |
HIP 66544 |
17.72 |
| 2026-08-11 00:00 |
13:39:49.61 |
-13:43:19.3 |
HIP 66544 |
22.24 |
| 2026-08-11 12:00 |
13:40:08.20 |
-13:44:30.9 |
HIP 66544 |
26.83 |
| 2026-08-12 00:00 |
13:40:26.90 |
-13:45:43.3 |
HIP 66544 |
31.47 |
| 2026-08-12 12:00 |
13:40:45.72 |
-13:46:56.4 |
HIP 66889 |
28.19 |
| 2026-08-13 00:00 |
13:41:04.65 |
-13:48:10.2 |
HIP 66889 |
24.93 |
| 2026-08-13 12:00 |
13:41:23.71 |
-13:49:24.8 |
HIP 66889 |
22.21 |
| 2026-08-14 00:00 |
13:41:42.87 |
-13:50:40.0 |
HIP 66889 |
20.27 |
| 2026-08-14 12:00 |
13:42:02.15 |
-13:51:56.0 |
HIP 66889 |
19.37 |
| 2026-08-15 00:00 |
13:42:21.54 |
-13:53:12.6 |
HIP 66889 |
19.66 |
| 2026-08-15 12:00 |
13:42:41.05 |
-13:54:29.9 |
HIP 66889 |
21.13 |
| 2026-08-16 00:00 |
13:43:00.66 |
-13:55:47.9 |
HIP 66973 |
20.67 |
| 2026-08-16 12:00 |
13:43:20.39 |
-13:57:06.5 |
HIP 66973 |
17.94 |
| 2026-08-17 00:00 |
13:43:40.23 |
-13:58:25.8 |
HIP 66973 |
16.30 |
| 2026-08-17 12:00 |
13:44:00.17 |
-13:59:45.8 |
HIP 66973 |
16.10 |
| 2026-08-18 00:00 |
13:44:20.22 |
-14:01:06.4 |
HIP 67069 |
13.72 |
| 2026-08-18 12:00 |
13:44:40.38 |
-14:02:27.7 |
HIP 67069 |
11.07 |
| 2026-08-19 00:00 |
13:45:00.64 |
-14:03:49.6 |
HIP 67069 |
10.41 |