メタデータ
| 項目 |
値 |
| Designation |
351P/Wiegert-PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-03-26T14:53:45.628800Z |
| Orbit solution date (soln_date, UTC) |
2026-01-07T15:43:05Z |
| Obs used |
315 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
18.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2023-08-22.0000000 |
| e |
0.29492996 |
| q (au) |
3.130422 |
| a (au) |
4.439874 |
| i (deg) |
12.776645 |
| Ω (om, deg) |
283.405061 |
| ω (w, deg) |
352.656240 |
| M (ma, deg) |
298.619005 |
等級
散乱 + 全体線形
$$
M_a = (12.665 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.665 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-06-01 00:00 |
00:04:03.67 |
+12:23:53.1 |
HIP 283 |
8.46 |
| 2026-06-01 12:00 |
00:04:26.06 |
+12:27:48.3 |
HIP 283 |
14.99 |
| 2026-06-02 00:00 |
00:04:48.31 |
+12:31:43.0 |
HIP 491 |
15.74 |
| 2026-06-02 12:00 |
00:05:10.43 |
+12:35:37.1 |
HIP 491 |
11.07 |
| 2026-06-03 00:00 |
00:05:32.40 |
+12:39:30.6 |
HIP 491 |
9.31 |
| 2026-06-03 12:00 |
00:05:54.23 |
+12:43:23.6 |
HIP 491 |
11.75 |
| 2026-06-04 00:00 |
00:06:15.92 |
+12:47:16.0 |
HIP 491 |
16.61 |
| 2026-06-04 12:00 |
00:06:37.47 |
+12:51:07.8 |
HIP 491 |
22.32 |
| 2026-06-05 00:00 |
00:06:58.87 |
+12:54:59.1 |
HIP 491 |
28.36 |
| 2026-06-05 12:00 |
00:07:20.12 |
+12:58:49.8 |
HIP 722 |
25.77 |
| 2026-06-06 00:00 |
00:07:41.23 |
+13:02:39.8 |
HIP 722 |
23.33 |
| 2026-06-06 12:00 |
00:08:02.19 |
+13:06:29.3 |
HIP 722 |
22.53 |
| 2026-06-07 00:00 |
00:08:23.00 |
+13:10:18.2 |
HIP 722 |
23.50 |
| 2026-06-07 12:00 |
00:08:43.66 |
+13:14:06.5 |
HIP 722 |
26.03 |
| 2026-06-08 00:00 |
00:09:04.17 |
+13:17:54.1 |
HIP 869 |
23.91 |
| 2026-06-08 12:00 |
00:09:24.53 |
+13:21:41.2 |
HIP 869 |
20.30 |
| 2026-06-09 00:00 |
00:09:44.73 |
+13:25:27.6 |
HIP 854 |
14.75 |
| 2026-06-09 12:00 |
00:10:04.78 |
+13:29:13.4 |
HIP 854 |
8.66 |
| 2026-06-10 00:00 |
00:10:24.68 |
+13:32:58.5 |
HIP 854 |
2.87 |
| 2026-06-10 12:00 |
00:10:44.42 |
+13:36:42.9 |
HIP 854 |
4.02 |
| 2026-06-11 00:00 |
00:11:04.00 |
+13:40:26.8 |
HIP 896 |
4.59 |
| 2026-06-11 12:00 |
00:11:23.42 |
+13:44:09.9 |
HIP 896 |
4.88 |
| 2026-06-12 00:00 |
00:11:42.69 |
+13:47:52.4 |
HIP 896 |
9.89 |
| 2026-06-12 12:00 |
00:12:01.79 |
+13:51:34.2 |
HIP 896 |
15.55 |
| 2026-06-13 00:00 |
00:12:20.73 |
+13:55:15.2 |
HIP 896 |
21.32 |
| 2026-06-13 12:00 |
00:12:39.51 |
+13:58:55.6 |
HIP 896 |
27.10 |
| 2026-06-14 00:00 |
00:12:58.12 |
+14:02:35.3 |
HIP 999 |
31.96 |
| 2026-06-14 12:00 |
00:13:16.57 |
+14:06:14.3 |
HIP 999 |
29.79 |
| 2026-06-15 00:00 |
00:13:34.85 |
+14:09:52.5 |
HIP 999 |
28.62 |
| 2026-06-15 12:00 |
00:13:52.96 |
+14:13:30.1 |
HIP 999 |
28.55 |
| 2026-06-16 00:00 |
00:14:10.90 |
+14:17:06.8 |
HIP 999 |
29.57 |
| 2026-06-16 12:00 |
00:14:28.68 |
+14:20:42.9 |
HIP 1277 |
31.34 |
| 2026-06-17 00:00 |
00:14:46.28 |
+14:24:18.1 |
HIP 1277 |
25.78 |
| 2026-06-17 12:00 |
00:15:03.71 |
+14:27:52.7 |
HIP 1277 |
20.27 |
| 2026-06-18 00:00 |
00:15:20.97 |
+14:31:26.4 |
HIP 1277 |
14.82 |
| 2026-06-18 12:00 |
00:15:38.05 |
+14:34:59.4 |
HIP 1277 |
9.44 |
| 2026-06-19 00:00 |
00:15:54.96 |
+14:38:31.6 |
HIP 1277 |
4.27 |
| 2026-06-19 12:00 |
00:16:11.70 |
+14:42:03.0 |
HIP 1277 |
2.38 |
| 2026-06-20 00:00 |
00:16:28.26 |
+14:45:33.6 |
HIP 1277 |
7.07 |
| 2026-06-20 12:00 |
00:16:44.64 |
+14:49:03.4 |
HIP 1277 |
12.25 |
| 2026-06-21 00:00 |
00:17:00.84 |
+14:52:32.4 |
HIP 1277 |
17.44 |
| 2026-06-21 12:00 |
00:17:16.86 |
+14:56:00.6 |
HIP 1277 |
22.61 |
| 2026-06-22 00:00 |
00:17:32.71 |
+14:59:27.9 |
HIP 1528 |
21.91 |