351P/Wiegert-PANSTARRS
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
$$
M_a = (12.695 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.695 |
| 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) |
| 2026-02-03 00:00 |
21:55:14.10 |
-04:19:14.1 |
HIP 108173 |
7.14 |
| 2026-02-03 12:00 |
21:55:52.42 |
-04:15:21.8 |
HIP 108173 |
13.55 |
| 2026-02-04 00:00 |
21:56:30.73 |
-04:11:28.9 |
HIP 108173 |
22.99 |
| 2026-02-04 12:00 |
21:57:09.03 |
-04:07:35.5 |
HIP 108506 |
30.26 |
| 2026-02-05 00:00 |
21:57:47.31 |
-04:03:41.5 |
HIP 108506 |
25.15 |
| 2026-02-05 12:00 |
21:58:25.59 |
-03:59:47.1 |
HIP 108506 |
23.73 |
| 2026-02-06 00:00 |
21:59:03.85 |
-03:55:52.1 |
HIP 108506 |
26.57 |
| 2026-02-06 12:00 |
21:59:42.09 |
-03:51:56.6 |
HIP 108448 |
32.59 |
| 2026-02-07 00:00 |
22:00:20.32 |
-03:48:00.5 |
HIP 108754 |
25.27 |
| 2026-02-07 12:00 |
22:00:58.54 |
-03:44:04.0 |
HIP 108754 |
15.05 |
| 2026-02-08 00:00 |
22:01:36.74 |
-03:40:06.9 |
HIP 108754 |
5.26 |
| 2026-02-08 12:00 |
22:02:14.93 |
-03:36:09.4 |
HIP 108754 |
6.44 |
| 2026-02-09 00:00 |
22:02:53.10 |
-03:32:11.3 |
HIP 108835 |
3.88 |
| 2026-02-09 12:00 |
22:03:31.25 |
-03:28:12.7 |
HIP 108835 |
9.69 |
| 2026-02-10 00:00 |
22:04:09.39 |
-03:24:13.6 |
HIP 109011 |
18.14 |
| 2026-02-10 12:00 |
22:04:47.51 |
-03:20:14.1 |
HIP 109011 |
8.81 |
| 2026-02-11 00:00 |
22:05:25.61 |
-03:16:14.0 |
HIP 109011 |
6.24 |
| 2026-02-11 12:00 |
22:06:03.69 |
-03:12:13.5 |
HIP 109103 |
5.87 |
| 2026-02-12 00:00 |
22:06:41.76 |
-03:08:12.5 |
HIP 109103 |
10.00 |
| 2026-02-12 12:00 |
22:07:19.80 |
-03:04:11.0 |
HIP 109103 |
19.45 |
| 2026-02-13 00:00 |
22:07:57.82 |
-03:00:09.0 |
HIP 109103 |
29.48 |
| 2026-02-13 12:00 |
22:08:35.83 |
-02:56:06.6 |
HIP 109265 |
36.27 |
| 2026-02-14 00:00 |
22:09:13.81 |
-02:52:03.7 |
HIP 109265 |
42.71 |
| 2026-02-14 12:00 |
22:09:51.77 |
-02:48:00.3 |
HIP 109382 |
46.92 |
| 2026-02-15 00:00 |
22:10:29.71 |
-02:43:56.5 |
HIP 109707 |
42.22 |
| 2026-02-15 12:00 |
22:11:07.63 |
-02:39:52.2 |
HIP 109707 |
33.01 |
| 2026-02-16 00:00 |
22:11:45.53 |
-02:35:47.5 |
HIP 109707 |
24.70 |
| 2026-02-16 12:00 |
22:12:23.40 |
-02:31:42.4 |
HIP 109707 |
18.52 |
| 2026-02-17 00:00 |
22:13:01.24 |
-02:27:36.8 |
HIP 109707 |
16.98 |
| 2026-02-17 12:00 |
22:13:39.06 |
-02:23:30.8 |
HIP 109707 |
21.12 |
| 2026-02-18 00:00 |
22:14:16.86 |
-02:19:24.4 |
HIP 109860 |
19.64 |
| 2026-02-18 12:00 |
22:14:54.63 |
-02:15:17.6 |
HIP 109860 |
11.94 |
| 2026-02-19 00:00 |
22:15:32.37 |
-02:11:10.3 |
HIP 109860 |
10.55 |
| 2026-02-19 12:00 |
22:16:10.09 |
-02:07:02.7 |
HIP 109860 |
17.07 |
| 2026-02-20 00:00 |
22:16:47.78 |
-02:02:54.6 |
HIP 109860 |
26.13 |
| 2026-02-20 12:00 |
22:17:25.44 |
-01:58:46.1 |
HIP 109984 |
26.38 |
| 2026-02-21 00:00 |
22:18:03.07 |
-01:54:37.3 |
HIP 110228 |
25.34 |
| 2026-02-21 12:00 |
22:18:40.68 |
-01:50:28.0 |
HIP 110228 |
15.31 |
| 2026-02-22 00:00 |
22:19:18.25 |
-01:46:18.4 |
HIP 110228 |
6.15 |
| 2026-02-22 12:00 |
22:19:55.79 |
-01:42:08.4 |
HIP 110228 |
7.23 |
| 2026-02-23 00:00 |
22:20:33.31 |
-01:37:58.1 |
HIP 110228 |
16.66 |
| 2026-02-23 12:00 |
22:21:10.79 |
-01:33:47.4 |
HIP 110395 |
12.73 |
| 2026-02-24 00:00 |
22:21:48.24 |
-01:29:36.3 |
HIP 110395 |
6.74 |