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
$$
M_a = (14.974 + 2.817\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.974 |
| n |
2.817 |
| gf |
1.000 |
| gb |
-0.849 |
| 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) |
| 2026-05-12 00:00 |
08:53:54.46 |
+17:52:15.6 |
HIP 43672 |
19.57 |
| 2026-05-12 12:00 |
08:54:12.56 |
+17:50:52.4 |
HIP 43672 |
18.90 |
| 2026-05-13 00:00 |
08:54:30.80 |
+17:49:28.6 |
HIP 43672 |
19.29 |
| 2026-05-13 12:00 |
08:54:49.19 |
+17:48:04.0 |
HIP 43846 |
16.76 |
| 2026-05-14 00:00 |
08:55:07.72 |
+17:46:38.8 |
HIP 43846 |
12.25 |
| 2026-05-14 12:00 |
08:55:26.39 |
+17:45:12.9 |
HIP 43846 |
7.85 |
| 2026-05-15 00:00 |
08:55:45.21 |
+17:43:46.4 |
HIP 43846 |
4.08 |
| 2026-05-15 12:00 |
08:56:04.16 |
+17:42:19.2 |
HIP 43846 |
4.03 |
| 2026-05-16 00:00 |
08:56:23.25 |
+17:40:51.4 |
HIP 43846 |
7.82 |
| 2026-05-16 12:00 |
08:56:42.47 |
+17:39:22.9 |
HIP 43915 |
10.53 |
| 2026-05-17 00:00 |
08:57:01.83 |
+17:37:53.7 |
HIP 43915 |
9.77 |
| 2026-05-17 12:00 |
08:57:21.33 |
+17:36:24.0 |
HIP 43915 |
11.29 |
| 2026-05-18 00:00 |
08:57:40.95 |
+17:34:53.5 |
HIP 43915 |
14.42 |
| 2026-05-18 12:00 |
08:58:00.71 |
+17:33:22.4 |
HIP 43915 |
18.38 |
| 2026-05-19 00:00 |
08:58:20.60 |
+17:31:50.7 |
HIP 43915 |
22.75 |
| 2026-05-19 12:00 |
08:58:40.61 |
+17:30:18.4 |
HIP 43915 |
27.37 |
| 2026-05-20 00:00 |
08:59:00.75 |
+17:28:45.4 |
HIP 43915 |
32.14 |
| 2026-05-20 12:00 |
08:59:21.02 |
+17:27:11.8 |
HIP 44125 |
36.50 |
| 2026-05-21 00:00 |
08:59:41.40 |
+17:25:37.5 |
HIP 44358 |
33.28 |
| 2026-05-21 12:00 |
09:00:01.91 |
+17:24:02.7 |
HIP 44358 |
28.19 |
| 2026-05-22 00:00 |
09:00:22.55 |
+17:22:27.2 |
HIP 44358 |
23.09 |
| 2026-05-22 12:00 |
09:00:43.30 |
+17:20:51.1 |
HIP 44358 |
18.01 |
| 2026-05-23 00:00 |
09:01:04.16 |
+17:19:14.4 |
HIP 44358 |
12.99 |
| 2026-05-23 12:00 |
09:01:25.15 |
+17:17:37.1 |
HIP 44358 |
8.22 |
| 2026-05-24 00:00 |
09:01:46.25 |
+17:15:59.2 |
HIP 44358 |
4.66 |
| 2026-05-24 12:00 |
09:02:07.46 |
+17:14:20.6 |
HIP 44358 |
5.67 |
| 2026-05-25 00:00 |
09:02:28.79 |
+17:12:41.5 |
HIP 44358 |
9.98 |
| 2026-05-25 12:00 |
09:02:50.22 |
+17:11:01.8 |
HIP 44358 |
15.01 |
| 2026-05-26 00:00 |
09:03:11.77 |
+17:09:21.5 |
HIP 44358 |
20.25 |
| 2026-05-26 12:00 |
09:03:33.42 |
+17:07:40.6 |
HIP 44358 |
25.59 |
| 2026-05-27 00:00 |
09:03:55.18 |
+17:05:59.1 |
HIP 44432 |
30.52 |
| 2026-05-27 12:00 |
09:04:17.05 |
+17:04:17.1 |
HIP 44674 |
28.43 |
| 2026-05-28 00:00 |
09:04:39.02 |
+17:02:34.4 |
HIP 44674 |
23.45 |
| 2026-05-28 12:00 |
09:05:01.09 |
+17:00:51.2 |
HIP 44674 |
18.75 |
| 2026-05-29 00:00 |
09:05:23.27 |
+16:59:07.4 |
HIP 44674 |
14.63 |
| 2026-05-29 12:00 |
09:05:45.55 |
+16:57:23.0 |
HIP 44674 |
11.78 |
| 2026-05-30 00:00 |
09:06:07.93 |
+16:55:38.1 |
HIP 44674 |
11.24 |
| 2026-05-30 12:00 |
09:06:30.40 |
+16:53:52.6 |
HIP 44674 |
13.32 |
| 2026-05-31 00:00 |
09:06:52.98 |
+16:52:06.5 |
HIP 44674 |
17.13 |
| 2026-05-31 12:00 |
09:07:15.65 |
+16:50:19.9 |
HIP 44773 |
14.17 |
| 2026-06-01 00:00 |
09:07:38.41 |
+16:48:32.7 |
HIP 44773 |
12.09 |
| 2026-06-01 12:00 |
09:08:01.27 |
+16:46:44.9 |
HIP 44870 |
9.15 |
| 2026-06-02 00:00 |
09:08:24.23 |
+16:44:56.6 |
HIP 44870 |
3.71 |