メタデータ
| 項目 |
値 |
| Designation |
190P/Mueller |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-04-07T20:17:42.864000Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:43:30Z |
| Obs used |
714 |
| NEO |
- |
| M1 |
15.500 |
| K1 |
6.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2016-09-09.0000000 |
| e |
0.52067780 |
| q (au) |
2.033166 |
| a (au) |
4.241753 |
| i (deg) |
2.172645 |
| Ω (om, deg) |
335.546737 |
| ω (w, deg) |
50.421023 |
| M (ma, deg) |
17.391691 |
等級
散乱 + 全体線形
$$
M_a = (15.260 + 2.459\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.260 |
| n |
2.459 |
| gf |
1.000 |
| gb |
-0.852 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
09:58:25.18 |
+12:28:40.5 |
HIP 48883 |
3.50 |
| 2026-07-29 12:00 |
09:58:53.16 |
+12:26:05.3 |
HIP 48883 |
9.73 |
| 2026-07-30 00:00 |
09:59:21.15 |
+12:23:29.8 |
HIP 48883 |
16.85 |
| 2026-07-30 12:00 |
09:59:49.14 |
+12:20:54.2 |
HIP 48883 |
24.09 |
| 2026-07-31 00:00 |
10:00:17.13 |
+12:18:18.3 |
HIP 49158 |
24.39 |
| 2026-07-31 12:00 |
10:00:45.13 |
+12:15:42.2 |
HIP 49158 |
17.32 |
| 2026-08-01 00:00 |
10:01:13.13 |
+12:13:05.8 |
HIP 49158 |
10.59 |
| 2026-08-01 12:00 |
10:01:41.13 |
+12:10:29.2 |
HIP 49158 |
5.59 |
| 2026-08-02 00:00 |
10:02:09.13 |
+12:07:52.4 |
HIP 49158 |
7.59 |
| 2026-08-02 12:00 |
10:02:37.13 |
+12:05:15.4 |
HIP 49158 |
13.84 |
| 2026-08-03 00:00 |
10:03:05.14 |
+12:02:38.2 |
HIP 49300 |
11.16 |
| 2026-08-03 12:00 |
10:03:33.14 |
+12:00:00.8 |
HIP 49300 |
8.02 |
| 2026-08-04 00:00 |
10:04:01.14 |
+11:57:23.1 |
HIP 49300 |
10.56 |
| 2026-08-04 12:00 |
10:04:29.14 |
+11:54:45.3 |
HIP 49300 |
16.33 |
| 2026-08-05 00:00 |
10:04:57.14 |
+11:52:07.2 |
HIP 49328 |
18.71 |
| 2026-08-05 12:00 |
10:05:25.14 |
+11:49:29.0 |
HIP 49328 |
22.17 |
| 2026-08-06 00:00 |
10:05:53.14 |
+11:46:50.5 |
HIP 49328 |
27.22 |
| 2026-08-06 12:00 |
10:06:21.13 |
+11:44:11.8 |
HIP 49669 |
32.75 |
| 2026-08-07 00:00 |
10:06:49.12 |
+11:41:33.0 |
HIP 49669 |
28.16 |
| 2026-08-07 12:00 |
10:07:17.11 |
+11:38:54.0 |
HIP 49669 |
24.94 |
| 2026-08-08 00:00 |
10:07:45.09 |
+11:36:14.7 |
HIP 49669 |
23.63 |
| 2026-08-08 12:00 |
10:08:13.07 |
+11:33:35.3 |
HIP 49669 |
24.55 |
| 2026-08-09 00:00 |
10:08:41.05 |
+11:30:55.8 |
HIP 49669 |
27.48 |
| 2026-08-09 12:00 |
10:09:09.01 |
+11:28:16.0 |
HIP 49669 |
31.87 |
| 2026-08-10 00:00 |
10:09:36.97 |
+11:25:36.1 |
HIP 49669 |
37.21 |
| 2026-08-10 12:00 |
10:10:04.93 |
+11:22:56.0 |
HIP 49669 |
43.14 |
| 2026-08-11 00:00 |
10:10:32.87 |
+11:20:15.7 |
HIP 49744 |
43.34 |
| 2026-08-11 12:00 |
10:11:00.81 |
+11:17:35.3 |
HIP 49744 |
44.43 |
| 2026-08-12 00:00 |
10:11:28.74 |
+11:14:54.7 |
HIP 50110 |
42.46 |
| 2026-08-12 12:00 |
10:11:56.66 |
+11:12:14.0 |
HIP 50110 |
35.36 |
| 2026-08-13 00:00 |
10:12:24.57 |
+11:09:33.2 |
HIP 50110 |
28.38 |
| 2026-08-13 12:00 |
10:12:52.48 |
+11:06:52.1 |
HIP 50110 |
21.66 |
| 2026-08-14 00:00 |
10:13:20.36 |
+11:04:11.0 |
HIP 50110 |
15.52 |
| 2026-08-14 12:00 |
10:13:48.24 |
+11:01:29.7 |
HIP 50110 |
10.99 |
| 2026-08-15 00:00 |
10:14:16.11 |
+10:58:48.3 |
HIP 50110 |
10.42 |
| 2026-08-15 12:00 |
10:14:43.96 |
+10:56:06.8 |
HIP 50110 |
14.29 |
| 2026-08-16 00:00 |
10:15:11.80 |
+10:53:25.2 |
HIP 50110 |
20.20 |
| 2026-08-16 12:00 |
10:15:39.62 |
+10:50:43.4 |
HIP 50110 |
26.82 |
| 2026-08-17 00:00 |
10:16:07.43 |
+10:48:01.5 |
HIP 50146 |
33.29 |
| 2026-08-17 12:00 |
10:16:35.22 |
+10:45:19.6 |
HIP 50424 |
36.09 |
| 2026-08-18 00:00 |
10:17:03.00 |
+10:42:37.5 |
HIP 50370 |
35.76 |
| 2026-08-18 12:00 |
10:17:30.76 |
+10:39:55.3 |
HIP 50370 |
33.76 |
| 2026-08-19 00:00 |
10:17:58.51 |
+10:37:13.0 |
HIP 50496 |
31.27 |