メタデータ
| 項目 |
値 |
| Designation |
356P/WISE |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-12-17T01:18:02.404800Z |
| Orbit solution date (soln_date, UTC) |
2026-04-27T13:42:35Z |
| Obs used |
220 |
| NEO |
- |
| M1 |
5.800 |
| K1 |
26.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2018-05-26.0000000 |
| e |
0.35414402 |
| q (au) |
2.689612 |
| a (au) |
4.164414 |
| i (deg) |
9.629137 |
| Ω (om, deg) |
160.805393 |
| ω (w, deg) |
226.159766 |
| M (ma, deg) |
18.550090 |
等級
散乱 + 全体線形
$$
M_a = (16.412 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.412 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.913 |
| k |
1.000 |
| δ90 |
9.999 |
| 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) |
| 2026-05-12 00:00 |
01:47:19.26 |
+06:18:56.3 |
HIP 8254 |
20.94 |
| 2026-05-12 12:00 |
01:48:10.84 |
+06:22:47.7 |
HIP 8254 |
30.52 |
| 2026-05-13 00:00 |
01:49:02.41 |
+06:26:38.4 |
HIP 8587 |
27.70 |
| 2026-05-13 12:00 |
01:49:53.97 |
+06:30:28.1 |
HIP 8587 |
14.47 |
| 2026-05-14 00:00 |
01:50:45.54 |
+06:34:17.1 |
HIP 8587 |
3.02 |
| 2026-05-14 12:00 |
01:51:37.10 |
+06:38:05.3 |
HIP 8617 |
8.93 |
| 2026-05-15 00:00 |
01:52:28.65 |
+06:41:52.5 |
HIP 8617 |
19.97 |
| 2026-05-15 12:00 |
01:53:20.19 |
+06:45:39.0 |
HIP 8617 |
32.76 |
| 2026-05-16 00:00 |
01:54:11.73 |
+06:49:24.6 |
HIP 8946 |
24.76 |
| 2026-05-16 12:00 |
01:55:03.26 |
+06:53:09.3 |
HIP 8946 |
15.85 |
| 2026-05-17 00:00 |
01:55:54.79 |
+06:56:53.1 |
HIP 8946 |
15.64 |
| 2026-05-17 12:00 |
01:56:46.30 |
+07:00:36.1 |
HIP 8946 |
24.35 |
| 2026-05-18 00:00 |
01:57:37.81 |
+07:04:18.2 |
HIP 9253 |
30.82 |
| 2026-05-18 12:00 |
01:58:29.31 |
+07:07:59.4 |
HIP 9253 |
28.35 |
| 2026-05-19 00:00 |
01:59:20.79 |
+07:11:39.7 |
HIP 9355 |
21.00 |
| 2026-05-19 12:00 |
02:00:12.27 |
+07:15:19.0 |
HIP 9355 |
20.23 |
| 2026-05-20 00:00 |
02:01:03.73 |
+07:18:57.5 |
HIP 9355 |
27.02 |
| 2026-05-20 12:00 |
02:01:55.19 |
+07:22:35.0 |
HIP 9548 |
27.52 |
| 2026-05-21 00:00 |
02:02:46.63 |
+07:26:11.6 |
HIP 9548 |
21.33 |
| 2026-05-21 12:00 |
02:03:38.06 |
+07:29:47.3 |
HIP 9548 |
22.45 |
| 2026-05-22 00:00 |
02:04:29.47 |
+07:33:22.0 |
HIP 9706 |
12.02 |
| 2026-05-22 12:00 |
02:05:20.88 |
+07:36:55.8 |
HIP 9706 |
10.33 |
| 2026-05-23 00:00 |
02:06:12.26 |
+07:40:28.6 |
HIP 9706 |
20.46 |
| 2026-05-23 12:00 |
02:07:03.64 |
+07:44:00.5 |
HIP 9920 |
16.55 |
| 2026-05-24 00:00 |
02:07:55.00 |
+07:47:31.4 |
HIP 9920 |
10.50 |
| 2026-05-24 12:00 |
02:08:46.35 |
+07:51:01.3 |
HIP 9920 |
17.17 |
| 2026-05-25 00:00 |
02:09:37.68 |
+07:54:30.3 |
HIP 10107 |
9.67 |
| 2026-05-25 12:00 |
02:10:28.99 |
+07:57:58.2 |
HIP 10107 |
12.53 |
| 2026-05-26 00:00 |
02:11:20.29 |
+08:01:25.2 |
HIP 10171 |
22.07 |
| 2026-05-26 12:00 |
02:12:11.57 |
+08:04:51.3 |
HIP 10171 |
26.69 |
| 2026-05-27 00:00 |
02:13:02.84 |
+08:08:16.3 |
HIP 10411 |
17.79 |
| 2026-05-27 12:00 |
02:13:54.09 |
+08:11:40.3 |
HIP 10411 |
10.31 |
| 2026-05-28 00:00 |
02:14:45.32 |
+08:15:03.3 |
HIP 10411 |
15.51 |
| 2026-05-28 12:00 |
02:15:36.54 |
+08:18:25.3 |
HIP 10411 |
26.81 |
| 2026-05-29 00:00 |
02:16:27.74 |
+08:21:46.3 |
HIP 10776 |
34.86 |
| 2026-05-29 12:00 |
02:17:18.92 |
+08:25:06.2 |
HIP 10776 |
24.93 |
| 2026-05-30 00:00 |
02:18:10.08 |
+08:28:25.2 |
HIP 10776 |
19.23 |
| 2026-05-30 12:00 |
02:19:01.22 |
+08:31:43.1 |
HIP 10776 |
21.44 |
| 2026-05-31 00:00 |
02:19:52.34 |
+08:35:00.0 |
HIP 10975 |
28.47 |
| 2026-05-31 12:00 |
02:20:43.44 |
+08:38:15.8 |
HIP 10975 |
17.43 |
| 2026-06-01 00:00 |
02:21:34.53 |
+08:41:30.6 |
HIP 10975 |
11.74 |
| 2026-06-01 12:00 |
02:22:25.59 |
+08:44:44.3 |
HIP 11106 |
14.25 |
| 2026-06-02 00:00 |
02:23:16.63 |
+08:47:57.0 |
HIP 11106 |
16.00 |