メタデータ
| 項目 |
値 |
| Designation |
337P/WISE |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-07-13T11:32:32.386560Z |
| Orbit solution date (soln_date, UTC) |
2024-01-04T23:44:02Z |
| Obs used |
386 |
| NEO |
- |
| M1 |
17.300 |
| K1 |
10.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2018-08-21.0000000 |
| e |
0.49688903 |
| q (au) |
1.654224 |
| a (au) |
3.287990 |
| i (deg) |
15.369108 |
| Ω (om, deg) |
106.080434 |
| ω (w, deg) |
160.917541 |
| M (ma, deg) |
127.046558 |
等級
散乱 + 全体線形
$$
M_a = (16.897 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.897 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.512 |
| k |
0.800 |
| 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 |
06:13:14.38 |
+24:21:44.6 |
HIP 29558 |
19.68 |
| 2026-03-26 12:00 |
06:13:23.39 |
+24:22:13.6 |
HIP 29558 |
18.68 |
| 2026-03-27 00:00 |
06:13:32.61 |
+24:22:42.4 |
HIP 29558 |
17.88 |
| 2026-03-27 12:00 |
06:13:42.04 |
+24:23:11.0 |
HIP 29558 |
17.31 |
| 2026-03-28 00:00 |
06:13:51.67 |
+24:23:39.4 |
HIP 29558 |
17.02 |
| 2026-03-28 12:00 |
06:14:01.51 |
+24:24:07.6 |
HIP 29558 |
17.04 |
| 2026-03-29 00:00 |
06:14:11.55 |
+24:24:35.6 |
HIP 29558 |
17.39 |
| 2026-03-29 12:00 |
06:14:21.79 |
+24:25:03.4 |
HIP 29558 |
18.05 |
| 2026-03-30 00:00 |
06:14:32.24 |
+24:25:31.0 |
HIP 29558 |
19.03 |
| 2026-03-30 12:00 |
06:14:42.88 |
+24:25:58.4 |
HIP 29558 |
20.28 |
| 2026-03-31 00:00 |
06:14:53.73 |
+24:26:25.6 |
HIP 29558 |
21.78 |
| 2026-03-31 12:00 |
06:15:04.77 |
+24:26:52.6 |
HIP 29558 |
23.48 |
| 2026-04-01 00:00 |
06:15:16.00 |
+24:27:19.4 |
HIP 29558 |
25.37 |
| 2026-04-01 12:00 |
06:15:27.43 |
+24:27:46.0 |
HIP 29558 |
27.42 |
| 2026-04-02 00:00 |
06:15:39.06 |
+24:28:12.4 |
HIP 29558 |
29.60 |
| 2026-04-02 12:00 |
06:15:50.88 |
+24:28:38.5 |
HIP 29789 |
31.11 |
| 2026-04-03 00:00 |
06:16:02.89 |
+24:29:04.5 |
HIP 29789 |
31.09 |
| 2026-04-03 12:00 |
06:16:15.09 |
+24:29:30.2 |
HIP 29789 |
31.31 |
| 2026-04-04 00:00 |
06:16:27.48 |
+24:29:55.7 |
HIP 29789 |
31.78 |
| 2026-04-04 12:00 |
06:16:40.06 |
+24:30:21.0 |
HIP 29789 |
32.50 |
| 2026-04-05 00:00 |
06:16:52.83 |
+24:30:46.1 |
HIP 29789 |
33.46 |
| 2026-04-05 12:00 |
06:17:05.79 |
+24:31:11.0 |
HIP 29789 |
34.66 |
| 2026-04-06 00:00 |
06:17:18.93 |
+24:31:35.6 |
HIP 29789 |
36.07 |
| 2026-04-06 12:00 |
06:17:32.25 |
+24:32:00.0 |
HIP 30102 |
34.81 |
| 2026-04-07 00:00 |
06:17:45.76 |
+24:32:24.2 |
HIP 30102 |
31.72 |
| 2026-04-07 12:00 |
06:17:59.45 |
+24:32:48.2 |
HIP 30102 |
28.59 |
| 2026-04-08 00:00 |
06:18:13.32 |
+24:33:12.0 |
HIP 30102 |
25.42 |
| 2026-04-08 12:00 |
06:18:27.37 |
+24:33:35.5 |
HIP 30102 |
22.22 |
| 2026-04-09 00:00 |
06:18:41.61 |
+24:33:58.8 |
HIP 30102 |
18.97 |
| 2026-04-09 12:00 |
06:18:56.02 |
+24:34:21.9 |
HIP 30102 |
15.70 |
| 2026-04-10 00:00 |
06:19:10.60 |
+24:34:44.7 |
HIP 30102 |
12.40 |
| 2026-04-10 12:00 |
06:19:25.37 |
+24:35:07.3 |
HIP 30102 |
9.09 |
| 2026-04-11 00:00 |
06:19:40.31 |
+24:35:29.6 |
HIP 30102 |
5.82 |
| 2026-04-11 12:00 |
06:19:55.42 |
+24:35:51.8 |
HIP 30102 |
2.87 |
| 2026-04-12 00:00 |
06:20:10.71 |
+24:36:13.7 |
HIP 30102 |
2.57 |
| 2026-04-12 12:00 |
06:20:26.17 |
+24:36:35.3 |
HIP 30102 |
5.45 |
| 2026-04-13 00:00 |
06:20:41.80 |
+24:36:56.7 |
HIP 30102 |
8.85 |
| 2026-04-13 12:00 |
06:20:57.60 |
+24:37:17.9 |
HIP 30102 |
12.39 |
| 2026-04-14 00:00 |
06:21:13.57 |
+24:37:38.8 |
HIP 30102 |
15.99 |
| 2026-04-14 12:00 |
06:21:29.70 |
+24:37:59.5 |
HIP 30102 |
19.65 |
| 2026-04-15 00:00 |
06:21:46.01 |
+24:38:19.9 |
HIP 30234 |
22.15 |
| 2026-04-15 12:00 |
06:22:02.48 |
+24:38:40.0 |
HIP 30234 |
22.40 |
| 2026-04-16 00:00 |
06:22:19.11 |
+24:39:00.0 |
HIP 30234 |
23.28 |