120P/Mueller 1
メタデータ
| 項目 |
値 |
| Designation |
120P/Mueller 1 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2004-09-29T10:29:13.793280Z |
| Orbit solution date (soln_date, UTC) |
2022-02-14T01:12:50Z |
| Obs used |
147 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
26.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2007-09-06.0000000 |
| e |
0.33653878 |
| q (au) |
2.743863 |
| a (au) |
4.135679 |
| i (deg) |
8.791195 |
| Ω (om, deg) |
4.442767 |
| ω (w, deg) |
30.008025 |
| M (ma, deg) |
125.574538 |
等級
散乱 + 全体線形
$$
M_a = (11.540 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.540 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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) |
| 2026-02-03 00:00 |
15:59:27.87 |
-27:18:11.8 |
HIP 78381 |
15.86 |
| 2026-02-03 12:00 |
15:59:43.63 |
-27:19:38.2 |
HIP 78381 |
13.00 |
| 2026-02-04 00:00 |
15:59:59.24 |
-27:21:04.2 |
HIP 78381 |
10.74 |
| 2026-02-04 12:00 |
16:00:14.72 |
-27:22:29.9 |
HIP 78381 |
9.46 |
| 2026-02-05 00:00 |
16:00:30.04 |
-27:23:55.4 |
HIP 78381 |
9.55 |
| 2026-02-05 12:00 |
16:00:45.22 |
-27:25:20.6 |
HIP 78381 |
10.93 |
| 2026-02-06 00:00 |
16:01:00.25 |
-27:26:45.5 |
HIP 78504 |
12.84 |
| 2026-02-06 12:00 |
16:01:15.14 |
-27:28:10.1 |
HIP 78504 |
12.37 |
| 2026-02-07 00:00 |
16:01:29.87 |
-27:29:34.4 |
HIP 78504 |
12.92 |
| 2026-02-07 12:00 |
16:01:44.45 |
-27:30:58.4 |
HIP 78504 |
14.36 |
| 2026-02-08 00:00 |
16:01:58.88 |
-27:32:22.2 |
HIP 78504 |
16.42 |
| 2026-02-08 12:00 |
16:02:13.15 |
-27:33:45.6 |
HIP 78504 |
18.89 |
| 2026-02-09 00:00 |
16:02:27.27 |
-27:35:08.7 |
HIP 78696 |
19.78 |
| 2026-02-09 12:00 |
16:02:41.24 |
-27:36:31.6 |
HIP 78696 |
16.44 |
| 2026-02-10 00:00 |
16:02:55.04 |
-27:37:54.1 |
HIP 78696 |
13.15 |
| 2026-02-10 12:00 |
16:03:08.69 |
-27:39:16.4 |
HIP 78696 |
9.94 |
| 2026-02-11 00:00 |
16:03:22.18 |
-27:40:38.3 |
HIP 78696 |
6.88 |
| 2026-02-11 12:00 |
16:03:35.50 |
-27:42:00.0 |
HIP 78696 |
4.20 |
| 2026-02-12 00:00 |
16:03:48.67 |
-27:43:21.3 |
HIP 78696 |
3.02 |
| 2026-02-12 12:00 |
16:04:01.67 |
-27:44:42.4 |
HIP 78696 |
4.59 |
| 2026-02-13 00:00 |
16:04:14.50 |
-27:46:03.1 |
HIP 78696 |
7.27 |
| 2026-02-13 12:00 |
16:04:27.17 |
-27:47:23.5 |
HIP 78696 |
10.18 |
| 2026-02-14 00:00 |
16:04:39.67 |
-27:48:43.6 |
HIP 78696 |
13.15 |
| 2026-02-14 12:00 |
16:04:52.01 |
-27:50:03.4 |
HIP 78696 |
16.13 |
| 2026-02-15 00:00 |
16:05:04.17 |
-27:51:22.9 |
HIP 78696 |
19.09 |
| 2026-02-15 12:00 |
16:05:16.16 |
-27:52:42.1 |
HIP 78912 |
19.11 |
| 2026-02-16 00:00 |
16:05:27.99 |
-27:54:01.0 |
HIP 78912 |
17.77 |
| 2026-02-16 12:00 |
16:05:39.63 |
-27:55:19.5 |
HIP 78912 |
16.87 |
| 2026-02-17 00:00 |
16:05:51.11 |
-27:56:37.7 |
HIP 78912 |
16.44 |
| 2026-02-17 12:00 |
16:06:02.41 |
-27:57:55.6 |
HIP 78912 |
16.51 |
| 2026-02-18 00:00 |
16:06:13.53 |
-27:59:13.1 |
HIP 78912 |
17.06 |
| 2026-02-18 12:00 |
16:06:24.47 |
-28:00:30.4 |
HIP 78912 |
18.02 |
| 2026-02-19 00:00 |
16:06:35.24 |
-28:01:47.3 |
HIP 78943 |
19.29 |
| 2026-02-19 12:00 |
16:06:45.82 |
-28:03:03.9 |
HIP 78943 |
20.08 |
| 2026-02-20 00:00 |
16:06:56.23 |
-28:04:20.1 |
HIP 78943 |
21.18 |
| 2026-02-20 12:00 |
16:07:06.45 |
-28:05:36.0 |
HIP 78943 |
22.52 |
| 2026-02-21 00:00 |
16:07:16.49 |
-28:06:51.6 |
HIP 78943 |
24.05 |
| 2026-02-21 12:00 |
16:07:26.35 |
-28:08:06.8 |
HIP 78943 |
25.73 |
| 2026-02-22 00:00 |
16:07:36.02 |
-28:09:21.7 |
HIP 79049 |
26.45 |
| 2026-02-22 12:00 |
16:07:45.50 |
-28:10:36.2 |
HIP 79049 |
27.20 |
| 2026-02-23 00:00 |
16:07:54.80 |
-28:11:50.4 |
HIP 79049 |
28.15 |
| 2026-02-23 12:00 |
16:08:03.91 |
-28:13:04.3 |
HIP 79185 |
28.85 |
| 2026-02-24 00:00 |
16:08:12.84 |
-28:14:17.8 |
HIP 79185 |
28.30 |