メタデータ
| 項目 |
値 |
| Designation |
C/1994 E1 (Mueller) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1993-11-28T11:07:06.925440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:47Z |
| Obs used |
73 |
| NEO |
- |
| M1 |
11.000 |
| K1 |
12.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1994-04-09.0000000 |
| e |
0.96835181 |
| q (au) |
1.751261 |
| a (au) |
55.335279 |
| i (deg) |
145.140300 |
| Ω (om, deg) |
5.175425 |
| ω (w, deg) |
98.924517 |
| M (ma, deg) |
0.314955 |
等級
散乱 + 全体線形
$$
M_a = (11.413 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.413 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.583 |
| k |
0.800 |
| 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) |
| 2026-03-26 00:00 |
06:42:26.48 |
-11:39:15.5 |
HIP 32160 |
10.01 |
| 2026-03-26 12:00 |
06:42:26.16 |
-11:38:54.7 |
HIP 32160 |
10.30 |
| 2026-03-27 00:00 |
06:42:25.87 |
-11:38:33.9 |
HIP 32160 |
10.60 |
| 2026-03-27 12:00 |
06:42:25.59 |
-11:38:13.1 |
HIP 32160 |
10.89 |
| 2026-03-28 00:00 |
06:42:25.34 |
-11:37:52.3 |
HIP 32160 |
11.18 |
| 2026-03-28 12:00 |
06:42:25.10 |
-11:37:31.6 |
HIP 32160 |
11.47 |
| 2026-03-29 00:00 |
06:42:24.89 |
-11:37:10.8 |
HIP 32160 |
11.76 |
| 2026-03-29 12:00 |
06:42:24.70 |
-11:36:50.1 |
HIP 32160 |
12.05 |
| 2026-03-30 00:00 |
06:42:24.53 |
-11:36:29.4 |
HIP 32160 |
12.34 |
| 2026-03-30 12:00 |
06:42:24.38 |
-11:36:08.8 |
HIP 32160 |
12.63 |
| 2026-03-31 00:00 |
06:42:24.25 |
-11:35:48.1 |
HIP 32160 |
12.92 |
| 2026-03-31 12:00 |
06:42:24.15 |
-11:35:27.5 |
HIP 32160 |
13.21 |
| 2026-04-01 00:00 |
06:42:24.06 |
-11:35:07.0 |
HIP 32160 |
13.50 |
| 2026-04-01 12:00 |
06:42:24.00 |
-11:34:46.4 |
HIP 32160 |
13.78 |
| 2026-04-02 00:00 |
06:42:23.95 |
-11:34:25.9 |
HIP 32160 |
14.07 |
| 2026-04-02 12:00 |
06:42:23.93 |
-11:34:05.4 |
HIP 32160 |
14.35 |
| 2026-04-03 00:00 |
06:42:23.93 |
-11:33:44.9 |
HIP 32160 |
14.63 |
| 2026-04-03 12:00 |
06:42:23.95 |
-11:33:24.5 |
HIP 32160 |
14.92 |
| 2026-04-04 00:00 |
06:42:23.99 |
-11:33:04.1 |
HIP 32160 |
15.20 |
| 2026-04-04 12:00 |
06:42:24.05 |
-11:32:43.8 |
HIP 32160 |
15.48 |
| 2026-04-05 00:00 |
06:42:24.13 |
-11:32:23.5 |
HIP 32160 |
15.76 |
| 2026-04-05 12:00 |
06:42:24.23 |
-11:32:03.2 |
HIP 32160 |
16.04 |
| 2026-04-06 00:00 |
06:42:24.36 |
-11:31:43.0 |
HIP 32160 |
16.32 |
| 2026-04-06 12:00 |
06:42:24.50 |
-11:31:22.8 |
HIP 32160 |
16.60 |
| 2026-04-07 00:00 |
06:42:24.67 |
-11:31:02.7 |
HIP 32160 |
16.87 |
| 2026-04-07 12:00 |
06:42:24.85 |
-11:30:42.6 |
HIP 32160 |
17.15 |
| 2026-04-08 00:00 |
06:42:25.06 |
-11:30:22.5 |
HIP 32160 |
17.42 |
| 2026-04-08 12:00 |
06:42:25.29 |
-11:30:02.5 |
HIP 32160 |
17.70 |
| 2026-04-09 00:00 |
06:42:25.54 |
-11:29:42.6 |
HIP 32160 |
17.97 |
| 2026-04-09 12:00 |
06:42:25.80 |
-11:29:22.7 |
HIP 32029 |
18.10 |
| 2026-04-10 00:00 |
06:42:26.09 |
-11:29:02.8 |
HIP 32029 |
17.97 |
| 2026-04-10 12:00 |
06:42:26.40 |
-11:28:43.1 |
HIP 32029 |
17.85 |
| 2026-04-11 00:00 |
06:42:26.73 |
-11:28:23.3 |
HIP 32029 |
17.73 |
| 2026-04-11 12:00 |
06:42:27.08 |
-11:28:03.7 |
HIP 32029 |
17.63 |
| 2026-04-12 00:00 |
06:42:27.46 |
-11:27:44.0 |
HIP 32029 |
17.54 |
| 2026-04-12 12:00 |
06:42:27.85 |
-11:27:24.5 |
HIP 32029 |
17.45 |
| 2026-04-13 00:00 |
06:42:28.26 |
-11:27:05.0 |
HIP 32029 |
17.38 |
| 2026-04-13 12:00 |
06:42:28.69 |
-11:26:45.6 |
HIP 32029 |
17.32 |
| 2026-04-14 00:00 |
06:42:29.14 |
-11:26:26.2 |
HIP 32029 |
17.28 |
| 2026-04-14 12:00 |
06:42:29.62 |
-11:26:06.9 |
HIP 32029 |
17.24 |
| 2026-04-15 00:00 |
06:42:30.11 |
-11:25:47.7 |
HIP 32029 |
17.22 |
| 2026-04-15 12:00 |
06:42:30.62 |
-11:25:28.5 |
HIP 32029 |
17.20 |
| 2026-04-16 00:00 |
06:42:31.16 |
-11:25:09.4 |
HIP 32029 |
17.20 |