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) |
| 2026-09-20 00:00 |
14:09:44.54 |
-15:48:13.4 |
HIP 69269 |
33.84 |
| 2026-09-20 12:00 |
14:10:10.17 |
-15:50:03.0 |
HIP 69269 |
29.69 |
| 2026-09-21 00:00 |
14:10:35.87 |
-15:51:52.8 |
HIP 69269 |
26.47 |
| 2026-09-21 12:00 |
14:11:01.62 |
-15:53:42.8 |
HIP 69269 |
24.55 |
| 2026-09-22 00:00 |
14:11:27.43 |
-15:55:33.0 |
HIP 69269 |
24.25 |
| 2026-09-22 12:00 |
14:11:53.30 |
-15:57:23.5 |
HIP 69269 |
25.64 |
| 2026-09-23 00:00 |
14:12:19.23 |
-15:59:14.2 |
HIP 69455 |
25.28 |
| 2026-09-23 12:00 |
14:12:45.21 |
-16:01:05.0 |
HIP 69455 |
24.52 |
| 2026-09-24 00:00 |
14:13:11.25 |
-16:02:56.1 |
HIP 69455 |
25.46 |
| 2026-09-24 12:00 |
14:13:37.35 |
-16:04:47.3 |
HIP 69455 |
27.95 |
| 2026-09-25 00:00 |
14:14:03.50 |
-16:06:38.8 |
HIP 69683 |
25.70 |
| 2026-09-25 12:00 |
14:14:29.71 |
-16:08:30.4 |
HIP 69683 |
19.68 |
| 2026-09-26 00:00 |
14:14:55.97 |
-16:10:22.2 |
HIP 69683 |
14.14 |
| 2026-09-26 12:00 |
14:15:22.29 |
-16:12:14.1 |
HIP 69683 |
9.96 |
| 2026-09-27 00:00 |
14:15:48.66 |
-16:14:06.3 |
HIP 69683 |
9.23 |
| 2026-09-27 12:00 |
14:16:15.08 |
-16:15:58.6 |
HIP 69683 |
12.59 |
| 2026-09-28 00:00 |
14:16:41.55 |
-16:17:51.0 |
HIP 69683 |
17.88 |
| 2026-09-28 12:00 |
14:17:08.08 |
-16:19:43.6 |
HIP 69861 |
20.68 |
| 2026-09-29 00:00 |
14:17:34.65 |
-16:21:36.4 |
HIP 69861 |
20.36 |
| 2026-09-29 12:00 |
14:18:01.28 |
-16:23:29.2 |
HIP 69861 |
22.13 |
| 2026-09-30 00:00 |
14:18:27.96 |
-16:25:22.3 |
HIP 69861 |
25.58 |
| 2026-09-30 12:00 |
14:18:54.69 |
-16:27:15.4 |
HIP 70031 |
25.38 |
| 2026-10-01 00:00 |
14:19:21.46 |
-16:29:08.7 |
HIP 70031 |
21.01 |
| 2026-10-01 12:00 |
14:19:48.29 |
-16:31:02.2 |
HIP 70031 |
18.12 |
| 2026-10-02 00:00 |
14:20:15.16 |
-16:32:55.7 |
HIP 70031 |
17.47 |
| 2026-10-02 12:00 |
14:20:42.08 |
-16:34:49.4 |
HIP 70031 |
19.29 |
| 2026-10-03 00:00 |
14:21:09.05 |
-16:36:43.1 |
HIP 70185 |
22.08 |
| 2026-10-03 12:00 |
14:21:36.07 |
-16:38:37.0 |
HIP 70185 |
23.11 |
| 2026-10-04 00:00 |
14:22:03.13 |
-16:40:31.0 |
HIP 70185 |
25.92 |
| 2026-10-04 12:00 |
14:22:30.24 |
-16:42:25.1 |
HIP 70185 |
30.03 |
| 2026-10-05 00:00 |
14:22:57.39 |
-16:44:19.2 |
HIP 70185 |
34.98 |
| 2026-10-05 12:00 |
14:23:24.59 |
-16:46:13.5 |
HIP 70185 |
40.47 |
| 2026-10-06 00:00 |
14:23:51.83 |
-16:48:07.8 |
HIP 70472 |
41.43 |
| 2026-10-06 12:00 |
14:24:19.11 |
-16:50:02.2 |
HIP 70472 |
37.84 |
| 2026-10-07 00:00 |
14:24:46.44 |
-16:51:56.7 |
HIP 70472 |
35.21 |
| 2026-10-07 12:00 |
14:25:13.81 |
-16:53:51.3 |
HIP 70472 |
33.77 |
| 2026-10-08 00:00 |
14:25:41.22 |
-16:55:45.9 |
HIP 70472 |
33.67 |
| 2026-10-08 12:00 |
14:26:08.68 |
-16:57:40.6 |
HIP 70472 |
34.93 |
| 2026-10-09 00:00 |
14:26:36.17 |
-16:59:35.3 |
HIP 70795 |
30.06 |
| 2026-10-09 12:00 |
14:27:03.70 |
-17:01:30.1 |
HIP 70795 |
23.70 |
| 2026-10-10 00:00 |
14:27:31.27 |
-17:03:24.9 |
HIP 70795 |
17.72 |
| 2026-10-10 12:00 |
14:27:58.88 |
-17:05:19.8 |
HIP 70801 |
11.33 |
| 2026-10-11 00:00 |
14:28:26.53 |
-17:07:14.6 |
HIP 70801 |
5.42 |