メタデータ
| 項目 |
値 |
| Designation |
116P/Wild 4 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-01-11T12:37:31.860480Z |
| Orbit solution date (soln_date, UTC) |
2024-09-13T12:15:05Z |
| Obs used |
4667 |
| NEO |
- |
| M1 |
7.600 |
| K1 |
17.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2016-04-16.0000000 |
| e |
0.37227703 |
| q (au) |
2.187086 |
| a (au) |
3.484158 |
| i (deg) |
3.607844 |
| Ω (om, deg) |
20.991856 |
| ω (w, deg) |
173.310727 |
| M (ma, deg) |
14.469123 |
等級
散乱 + 全体線形
$$
M_a = (7.718 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.718 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.870 |
| k |
0.999 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2020-12-05 |
2024-09-04 |
+8.4098 |
-3.455 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
02:04:25.17 |
+13:06:47.8 |
HIP 9782 |
24.22 |
| 2026-05-12 12:00 |
02:04:51.78 |
+13:09:16.9 |
HIP 9782 |
17.56 |
| 2026-05-13 00:00 |
02:05:18.38 |
+13:11:45.8 |
HIP 9782 |
11.23 |
| 2026-05-13 12:00 |
02:05:44.97 |
+13:14:14.4 |
HIP 9782 |
6.35 |
| 2026-05-14 00:00 |
02:06:11.53 |
+13:16:42.7 |
HIP 9782 |
7.09 |
| 2026-05-14 12:00 |
02:06:38.08 |
+13:19:10.8 |
HIP 9828 |
8.78 |
| 2026-05-15 00:00 |
02:07:04.61 |
+13:21:38.5 |
HIP 9828 |
10.46 |
| 2026-05-15 12:00 |
02:07:31.12 |
+13:24:05.9 |
HIP 9828 |
15.39 |
| 2026-05-16 00:00 |
02:07:57.60 |
+13:26:33.1 |
HIP 9828 |
21.43 |
| 2026-05-16 12:00 |
02:08:24.07 |
+13:29:00.0 |
HIP 10094 |
27.26 |
| 2026-05-17 00:00 |
02:08:50.52 |
+13:31:26.5 |
HIP 10094 |
24.95 |
| 2026-05-17 12:00 |
02:09:16.94 |
+13:33:52.7 |
HIP 10175 |
24.17 |
| 2026-05-18 00:00 |
02:09:43.34 |
+13:36:18.6 |
HIP 10175 |
17.33 |
| 2026-05-18 12:00 |
02:10:09.71 |
+13:38:44.3 |
HIP 10175 |
10.52 |
| 2026-05-19 00:00 |
02:10:36.06 |
+13:41:09.5 |
HIP 10175 |
3.88 |
| 2026-05-19 12:00 |
02:11:02.38 |
+13:43:34.5 |
HIP 10175 |
3.60 |
| 2026-05-20 00:00 |
02:11:28.68 |
+13:45:59.2 |
HIP 10175 |
10.20 |
| 2026-05-20 12:00 |
02:11:54.95 |
+13:48:23.5 |
HIP 10300 |
13.38 |
| 2026-05-21 00:00 |
02:12:21.19 |
+13:50:47.4 |
HIP 10300 |
6.76 |
| 2026-05-21 12:00 |
02:12:47.41 |
+13:53:11.1 |
HIP 10300 |
2.25 |
| 2026-05-22 00:00 |
02:13:13.59 |
+13:55:34.4 |
HIP 10300 |
7.53 |
| 2026-05-22 12:00 |
02:13:39.75 |
+13:57:57.4 |
HIP 10300 |
14.15 |
| 2026-05-23 00:00 |
02:14:05.87 |
+14:00:20.0 |
HIP 10300 |
20.86 |
| 2026-05-23 12:00 |
02:14:31.97 |
+14:02:42.3 |
HIP 10300 |
27.59 |
| 2026-05-24 00:00 |
02:14:58.03 |
+14:05:04.3 |
HIP 10300 |
34.33 |
| 2026-05-24 12:00 |
02:15:24.06 |
+14:07:25.9 |
HIP 10669 |
34.23 |
| 2026-05-25 00:00 |
02:15:50.06 |
+14:09:47.1 |
HIP 10669 |
27.84 |
| 2026-05-25 12:00 |
02:16:16.03 |
+14:12:08.0 |
HIP 10669 |
21.67 |
| 2026-05-26 00:00 |
02:16:41.96 |
+14:14:28.5 |
HIP 10669 |
15.95 |
| 2026-05-26 12:00 |
02:17:07.85 |
+14:16:48.7 |
HIP 10669 |
11.37 |
| 2026-05-27 00:00 |
02:17:33.72 |
+14:19:08.5 |
HIP 10669 |
9.69 |
| 2026-05-27 12:00 |
02:17:59.55 |
+14:21:28.0 |
HIP 10727 |
6.62 |
| 2026-05-28 00:00 |
02:18:25.34 |
+14:23:47.1 |
HIP 10727 |
6.73 |
| 2026-05-28 12:00 |
02:18:51.09 |
+14:26:05.8 |
HIP 10727 |
11.63 |
| 2026-05-29 00:00 |
02:19:16.81 |
+14:28:24.2 |
HIP 10895 |
17.32 |
| 2026-05-29 12:00 |
02:19:42.49 |
+14:30:42.2 |
HIP 10895 |
14.88 |
| 2026-05-30 00:00 |
02:20:08.13 |
+14:32:59.8 |
HIP 10895 |
15.19 |
| 2026-05-30 12:00 |
02:20:33.73 |
+14:35:17.1 |
HIP 10895 |
18.09 |
| 2026-05-31 00:00 |
02:20:59.30 |
+14:37:34.0 |
HIP 10895 |
22.59 |
| 2026-05-31 12:00 |
02:21:24.82 |
+14:39:50.5 |
HIP 10895 |
27.93 |
| 2026-06-01 00:00 |
02:21:50.31 |
+14:42:06.6 |
HIP 10895 |
33.70 |
| 2026-06-01 12:00 |
02:22:15.75 |
+14:44:22.3 |
HIP 10895 |
39.70 |
| 2026-06-02 00:00 |
02:22:41.15 |
+14:46:37.7 |
HIP 11134 |
39.33 |