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) |
| 2026-09-20 00:00 |
08:45:43.89 |
+22:24:50.4 |
HIP 43078 |
11.05 |
| 2026-09-20 12:00 |
08:46:09.86 |
+22:24:08.2 |
HIP 43078 |
5.33 |
| 2026-09-21 00:00 |
08:46:35.75 |
+22:23:26.4 |
HIP 43078 |
2.79 |
| 2026-09-21 12:00 |
08:47:01.54 |
+22:22:44.9 |
HIP 43078 |
7.71 |
| 2026-09-22 00:00 |
08:47:27.26 |
+22:22:03.7 |
HIP 43078 |
13.52 |
| 2026-09-22 12:00 |
08:47:52.89 |
+22:21:23.0 |
HIP 43275 |
16.55 |
| 2026-09-23 00:00 |
08:48:18.43 |
+22:20:42.6 |
HIP 43275 |
11.01 |
| 2026-09-23 12:00 |
08:48:43.88 |
+22:20:02.7 |
HIP 43275 |
6.28 |
| 2026-09-24 00:00 |
08:49:09.24 |
+22:19:23.1 |
HIP 43275 |
5.26 |
| 2026-09-24 12:00 |
08:49:34.52 |
+22:18:43.9 |
HIP 43275 |
9.24 |
| 2026-09-25 00:00 |
08:49:59.70 |
+22:18:05.2 |
HIP 43275 |
14.56 |
| 2026-09-25 12:00 |
08:50:24.79 |
+22:17:26.8 |
HIP 43275 |
20.16 |
| 2026-09-26 00:00 |
08:50:49.79 |
+22:16:48.9 |
HIP 43538 |
23.54 |
| 2026-09-26 12:00 |
08:51:14.70 |
+22:16:11.5 |
HIP 43538 |
19.29 |
| 2026-09-27 00:00 |
08:51:39.52 |
+22:15:34.4 |
HIP 43538 |
16.06 |
| 2026-09-27 12:00 |
08:52:04.24 |
+22:14:57.9 |
HIP 43538 |
14.51 |
| 2026-09-28 00:00 |
08:52:28.87 |
+22:14:21.7 |
HIP 43538 |
15.15 |
| 2026-09-28 12:00 |
08:52:53.40 |
+22:13:46.1 |
HIP 43538 |
17.72 |
| 2026-09-29 00:00 |
08:53:17.83 |
+22:13:10.9 |
HIP 43727 |
14.11 |
| 2026-09-29 12:00 |
08:53:42.17 |
+22:12:36.2 |
HIP 43727 |
8.47 |
| 2026-09-30 00:00 |
08:54:06.40 |
+22:12:02.0 |
HIP 43727 |
2.94 |
| 2026-09-30 12:00 |
08:54:30.54 |
+22:11:28.3 |
HIP 43727 |
2.99 |
| 2026-10-01 00:00 |
08:54:54.58 |
+22:10:55.0 |
HIP 43727 |
8.48 |
| 2026-10-01 12:00 |
08:55:18.51 |
+22:10:22.3 |
HIP 43727 |
14.02 |
| 2026-10-02 00:00 |
08:55:42.35 |
+22:09:50.2 |
HIP 43727 |
19.56 |
| 2026-10-02 12:00 |
08:56:06.08 |
+22:09:18.5 |
HIP 43950 |
22.36 |
| 2026-10-03 00:00 |
08:56:29.70 |
+22:08:47.4 |
HIP 43950 |
19.03 |
| 2026-10-03 12:00 |
08:56:53.22 |
+22:08:16.9 |
HIP 43950 |
16.88 |
| 2026-10-04 00:00 |
08:57:16.63 |
+22:07:46.9 |
HIP 43950 |
16.37 |
| 2026-10-04 12:00 |
08:57:39.94 |
+22:07:17.4 |
HIP 43950 |
17.62 |
| 2026-10-05 00:00 |
08:58:03.13 |
+22:06:48.6 |
HIP 43950 |
20.28 |
| 2026-10-05 12:00 |
08:58:26.22 |
+22:06:20.3 |
HIP 43950 |
23.87 |
| 2026-10-06 00:00 |
08:58:49.19 |
+22:05:52.7 |
HIP 43950 |
28.02 |
| 2026-10-06 12:00 |
08:59:12.05 |
+22:05:25.6 |
HIP 44228 |
28.99 |
| 2026-10-07 00:00 |
08:59:34.80 |
+22:04:59.1 |
HIP 44228 |
26.43 |
| 2026-10-07 12:00 |
08:59:57.43 |
+22:04:33.3 |
HIP 44228 |
24.75 |
| 2026-10-08 00:00 |
09:00:19.95 |
+22:04:08.1 |
HIP 44228 |
24.11 |
| 2026-10-08 12:00 |
09:00:42.35 |
+22:03:43.6 |
HIP 44228 |
24.57 |
| 2026-10-09 00:00 |
09:01:04.63 |
+22:03:19.7 |
HIP 44228 |
26.07 |
| 2026-10-09 12:00 |
09:01:26.79 |
+22:02:56.4 |
HIP 44414 |
23.15 |
| 2026-10-10 00:00 |
09:01:48.83 |
+22:02:33.9 |
HIP 44414 |
19.32 |
| 2026-10-10 12:00 |
09:02:10.75 |
+22:02:12.0 |
HIP 44414 |
16.22 |
| 2026-10-11 00:00 |
09:02:32.55 |
+22:01:50.8 |
HIP 44414 |
14.30 |