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) |
| 2026-03-26 00:00 |
08:39:51.26 |
+19:06:05.7 |
HIP 42542 |
16.34 |
| 2026-03-26 12:00 |
08:39:49.17 |
+19:05:59.0 |
HIP 42542 |
16.65 |
| 2026-03-27 00:00 |
08:39:47.37 |
+19:05:51.3 |
HIP 42542 |
16.96 |
| 2026-03-27 12:00 |
08:39:45.84 |
+19:05:42.5 |
HIP 42542 |
17.25 |
| 2026-03-28 00:00 |
08:39:44.58 |
+19:05:32.8 |
HIP 42542 |
17.54 |
| 2026-03-28 12:00 |
08:39:43.60 |
+19:05:22.1 |
HIP 42542 |
17.80 |
| 2026-03-29 00:00 |
08:39:42.89 |
+19:05:10.5 |
HIP 42542 |
18.06 |
| 2026-03-29 12:00 |
08:39:42.45 |
+19:04:57.9 |
HIP 42542 |
18.29 |
| 2026-03-30 00:00 |
08:39:42.28 |
+19:04:44.3 |
HIP 42542 |
18.51 |
| 2026-03-30 12:00 |
08:39:42.38 |
+19:04:29.7 |
HIP 42542 |
18.71 |
| 2026-03-31 00:00 |
08:39:42.75 |
+19:04:14.2 |
HIP 42542 |
18.90 |
| 2026-03-31 12:00 |
08:39:43.39 |
+19:03:57.8 |
HIP 42542 |
19.07 |
| 2026-04-01 00:00 |
08:39:44.29 |
+19:03:40.4 |
HIP 42542 |
19.23 |
| 2026-04-01 12:00 |
08:39:45.45 |
+19:03:22.1 |
HIP 42542 |
19.39 |
| 2026-04-02 00:00 |
08:39:46.88 |
+19:03:02.8 |
HIP 42542 |
19.54 |
| 2026-04-02 12:00 |
08:39:48.57 |
+19:02:42.6 |
HIP 42542 |
19.70 |
| 2026-04-03 00:00 |
08:39:50.52 |
+19:02:21.5 |
HIP 42542 |
19.86 |
| 2026-04-03 12:00 |
08:39:52.73 |
+19:01:59.5 |
HIP 42542 |
20.03 |
| 2026-04-04 00:00 |
08:39:55.20 |
+19:01:36.5 |
HIP 42542 |
20.21 |
| 2026-04-04 12:00 |
08:39:57.93 |
+19:01:12.7 |
HIP 42542 |
20.42 |
| 2026-04-05 00:00 |
08:40:00.91 |
+19:00:47.9 |
HIP 42542 |
20.65 |
| 2026-04-05 12:00 |
08:40:04.15 |
+19:00:22.2 |
HIP 42542 |
20.92 |
| 2026-04-06 00:00 |
08:40:07.64 |
+18:59:55.7 |
HIP 42542 |
21.22 |
| 2026-04-06 12:00 |
08:40:11.38 |
+18:59:28.2 |
HIP 42542 |
21.57 |
| 2026-04-07 00:00 |
08:40:15.38 |
+18:58:59.8 |
HIP 42542 |
21.97 |
| 2026-04-07 12:00 |
08:40:19.62 |
+18:58:30.6 |
HIP 42542 |
22.43 |
| 2026-04-08 00:00 |
08:40:24.12 |
+18:58:00.5 |
HIP 42542 |
22.95 |
| 2026-04-08 12:00 |
08:40:28.86 |
+18:57:29.4 |
HIP 42542 |
23.54 |
| 2026-04-09 00:00 |
08:40:33.84 |
+18:56:57.5 |
HIP 42705 |
22.95 |
| 2026-04-09 12:00 |
08:40:39.07 |
+18:56:24.8 |
HIP 42705 |
21.70 |
| 2026-04-10 00:00 |
08:40:44.55 |
+18:55:51.1 |
HIP 42705 |
20.40 |
| 2026-04-10 12:00 |
08:40:50.27 |
+18:55:16.6 |
HIP 42705 |
19.07 |
| 2026-04-11 00:00 |
08:40:56.22 |
+18:54:41.2 |
HIP 42705 |
17.70 |
| 2026-04-11 12:00 |
08:41:02.42 |
+18:54:05.0 |
HIP 42705 |
16.30 |
| 2026-04-12 00:00 |
08:41:08.86 |
+18:53:27.9 |
HIP 42705 |
14.89 |
| 2026-04-12 12:00 |
08:41:15.53 |
+18:52:49.9 |
HIP 42705 |
13.47 |
| 2026-04-13 00:00 |
08:41:22.44 |
+18:52:11.1 |
HIP 42705 |
12.08 |
| 2026-04-13 12:00 |
08:41:29.59 |
+18:51:31.5 |
HIP 42705 |
10.76 |
| 2026-04-14 00:00 |
08:41:36.96 |
+18:50:51.0 |
HIP 42705 |
9.56 |
| 2026-04-14 12:00 |
08:41:44.57 |
+18:50:09.6 |
HIP 42705 |
8.57 |
| 2026-04-15 00:00 |
08:41:52.41 |
+18:49:27.4 |
HIP 42705 |
7.91 |
| 2026-04-15 12:00 |
08:42:00.48 |
+18:48:44.4 |
HIP 42705 |
7.72 |
| 2026-04-16 00:00 |
08:42:08.78 |
+18:48:00.5 |
HIP 42705 |
8.07 |