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 |
-0.503 |
| 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 |
22:58:03.19 |
+02:49:44.2 |
HIP 113441 |
37.76 |
| 2026-03-26 12:00 |
22:58:37.97 |
+02:54:09.0 |
HIP 113622 |
31.87 |
| 2026-03-27 00:00 |
22:59:12.70 |
+02:58:33.8 |
HIP 113622 |
22.62 |
| 2026-03-27 12:00 |
22:59:47.37 |
+03:02:58.7 |
HIP 113622 |
14.04 |
| 2026-03-28 00:00 |
23:00:21.98 |
+03:07:23.7 |
HIP 113622 |
8.47 |
| 2026-03-28 12:00 |
23:00:56.54 |
+03:11:48.7 |
HIP 113627 |
9.20 |
| 2026-03-29 00:00 |
23:01:31.03 |
+03:16:13.8 |
HIP 113627 |
12.07 |
| 2026-03-29 12:00 |
23:02:05.47 |
+03:20:39.0 |
HIP 113705 |
12.47 |
| 2026-03-30 00:00 |
23:02:39.84 |
+03:25:04.2 |
HIP 113705 |
15.60 |
| 2026-03-30 12:00 |
23:03:14.16 |
+03:29:29.4 |
HIP 113913 |
17.42 |
| 2026-03-31 00:00 |
23:03:48.42 |
+03:33:54.7 |
HIP 113889 |
15.33 |
| 2026-03-31 12:00 |
23:04:22.61 |
+03:38:20.0 |
HIP 113889 |
13.20 |
| 2026-04-01 00:00 |
23:04:56.75 |
+03:42:45.4 |
HIP 113889 |
17.25 |
| 2026-04-01 12:00 |
23:05:30.82 |
+03:47:10.8 |
HIP 113889 |
24.58 |
| 2026-04-02 00:00 |
23:06:04.83 |
+03:51:36.2 |
HIP 113980 |
27.25 |
| 2026-04-02 12:00 |
23:06:38.78 |
+03:56:01.7 |
HIP 114228 |
29.94 |
| 2026-04-03 00:00 |
23:07:12.67 |
+04:00:27.1 |
HIP 114228 |
28.80 |
| 2026-04-03 12:00 |
23:07:46.50 |
+04:04:52.6 |
HIP 114228 |
30.73 |
| 2026-04-04 00:00 |
23:08:20.26 |
+04:09:18.1 |
HIP 114357 |
29.47 |
| 2026-04-04 12:00 |
23:08:53.96 |
+04:13:43.7 |
HIP 114266 |
27.37 |
| 2026-04-05 00:00 |
23:09:27.60 |
+04:18:09.2 |
HIP 114266 |
26.09 |
| 2026-04-05 12:00 |
23:10:01.17 |
+04:22:34.7 |
HIP 114513 |
25.52 |
| 2026-04-06 00:00 |
23:10:34.68 |
+04:27:00.2 |
HIP 114513 |
19.84 |
| 2026-04-06 12:00 |
23:11:08.12 |
+04:31:25.8 |
HIP 114525 |
15.55 |
| 2026-04-07 00:00 |
23:11:41.50 |
+04:35:51.3 |
HIP 114525 |
7.61 |
| 2026-04-07 12:00 |
23:12:14.81 |
+04:40:16.8 |
HIP 114525 |
7.15 |
| 2026-04-08 00:00 |
23:12:48.06 |
+04:44:42.3 |
HIP 114525 |
14.86 |
| 2026-04-08 12:00 |
23:13:21.24 |
+04:49:07.7 |
HIP 114690 |
14.50 |
| 2026-04-09 00:00 |
23:13:54.35 |
+04:53:33.2 |
HIP 114690 |
6.46 |
| 2026-04-09 12:00 |
23:14:27.39 |
+04:57:58.6 |
HIP 114690 |
6.95 |
| 2026-04-10 00:00 |
23:15:00.37 |
+05:02:24.0 |
HIP 114690 |
15.13 |
| 2026-04-10 12:00 |
23:15:33.28 |
+05:06:49.3 |
HIP 114783 |
24.02 |
| 2026-04-11 00:00 |
23:16:06.11 |
+05:11:14.6 |
HIP 114783 |
23.90 |
| 2026-04-11 12:00 |
23:16:38.88 |
+05:15:39.9 |
HIP 114941 |
26.30 |
| 2026-04-12 00:00 |
23:17:11.58 |
+05:20:05.1 |
HIP 114941 |
22.23 |
| 2026-04-12 12:00 |
23:17:44.21 |
+05:24:30.2 |
HIP 115112 |
17.42 |
| 2026-04-13 00:00 |
23:18:16.76 |
+05:28:55.3 |
HIP 115112 |
10.38 |
| 2026-04-13 12:00 |
23:18:49.24 |
+05:33:20.3 |
HIP 115112 |
9.08 |
| 2026-04-14 00:00 |
23:19:21.66 |
+05:37:45.2 |
HIP 115210 |
11.25 |
| 2026-04-14 12:00 |
23:19:53.99 |
+05:42:10.1 |
HIP 115210 |
4.58 |
| 2026-04-15 00:00 |
23:20:26.26 |
+05:46:34.8 |
HIP 115210 |
9.15 |
| 2026-04-15 12:00 |
23:20:58.44 |
+05:50:59.5 |
HIP 115210 |
17.71 |
| 2026-04-16 00:00 |
23:21:30.56 |
+05:55:24.1 |
HIP 115364 |
26.31 |