メタデータ
| 項目 |
値 |
| Designation |
C/1993 Q1 (Mueller) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1994-03-26T06:39:06.874560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:47Z |
| Obs used |
495 |
| NEO |
- |
| M1 |
9.800 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1993-10-28.0000000 |
| e |
1.00032242 |
| q (au) |
0.967251 |
| a (au) |
-2999.968986 |
| i (deg) |
105.026500 |
| Ω (om, deg) |
193.788984 |
| ω (w, deg) |
261.032961 |
| M (ma, deg) |
-0.000895 |
等級
散乱 + 全体線形
$$
M_a = (8.169 + 4.619\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.169 |
| n |
4.619 |
| gf |
1.000 |
| gb |
-0.687 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 1992-09-28 |
1993-12-09 |
-0.3959 |
+0.181 |
| 1993-12-09 |
1994-02-02 |
+0.8399 |
-0.656 |
| 1994-04-01 |
1994-07-02 |
+14.9311 |
-0.152 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
13:43:25.33 |
+58:43:41.6 |
HIP 66894 |
9.95 |
| 2026-09-20 12:00 |
13:43:28.59 |
+58:43:24.5 |
HIP 66894 |
10.45 |
| 2026-09-21 00:00 |
13:43:31.87 |
+58:43:07.6 |
HIP 66894 |
10.95 |
| 2026-09-21 12:00 |
13:43:35.16 |
+58:42:50.8 |
HIP 66894 |
11.44 |
| 2026-09-22 00:00 |
13:43:38.46 |
+58:42:34.3 |
HIP 66894 |
11.94 |
| 2026-09-22 12:00 |
13:43:41.79 |
+58:42:18.0 |
HIP 66894 |
12.44 |
| 2026-09-23 00:00 |
13:43:45.12 |
+58:42:01.8 |
HIP 66894 |
12.94 |
| 2026-09-23 12:00 |
13:43:48.47 |
+58:41:45.9 |
HIP 66894 |
13.44 |
| 2026-09-24 00:00 |
13:43:51.83 |
+58:41:30.1 |
HIP 66894 |
13.94 |
| 2026-09-24 12:00 |
13:43:55.21 |
+58:41:14.6 |
HIP 66894 |
14.44 |
| 2026-09-25 00:00 |
13:43:58.60 |
+58:40:59.2 |
HIP 66894 |
14.93 |
| 2026-09-25 12:00 |
13:44:02.00 |
+58:40:44.1 |
HIP 66894 |
15.43 |
| 2026-09-26 00:00 |
13:44:05.42 |
+58:40:29.2 |
HIP 66894 |
15.93 |
| 2026-09-26 12:00 |
13:44:08.85 |
+58:40:14.4 |
HIP 66894 |
16.43 |
| 2026-09-27 00:00 |
13:44:12.29 |
+58:40:00.0 |
HIP 66894 |
16.92 |
| 2026-09-27 12:00 |
13:44:15.74 |
+58:39:45.6 |
HIP 66894 |
17.42 |
| 2026-09-28 00:00 |
13:44:19.21 |
+58:39:31.5 |
HIP 66894 |
17.92 |
| 2026-09-28 12:00 |
13:44:22.69 |
+58:39:17.6 |
HIP 66894 |
18.41 |
| 2026-09-29 00:00 |
13:44:26.18 |
+58:39:03.9 |
HIP 66894 |
18.91 |
| 2026-09-29 12:00 |
13:44:29.68 |
+58:38:50.4 |
HIP 66894 |
19.40 |
| 2026-09-30 00:00 |
13:44:33.19 |
+58:38:37.2 |
HIP 66894 |
19.90 |
| 2026-09-30 12:00 |
13:44:36.72 |
+58:38:24.1 |
HIP 66894 |
20.39 |
| 2026-10-01 00:00 |
13:44:40.25 |
+58:38:11.3 |
HIP 66894 |
20.89 |
| 2026-10-01 12:00 |
13:44:43.80 |
+58:37:58.6 |
HIP 66894 |
21.38 |
| 2026-10-02 00:00 |
13:44:47.36 |
+58:37:46.2 |
HIP 66894 |
21.87 |
| 2026-10-02 12:00 |
13:44:50.92 |
+58:37:34.0 |
HIP 66894 |
22.37 |
| 2026-10-03 00:00 |
13:44:54.50 |
+58:37:22.1 |
HIP 66894 |
22.86 |
| 2026-10-03 12:00 |
13:44:58.09 |
+58:37:10.3 |
HIP 66894 |
23.35 |
| 2026-10-04 00:00 |
13:45:01.68 |
+58:36:58.8 |
HIP 66894 |
23.84 |
| 2026-10-04 12:00 |
13:45:05.29 |
+58:36:47.5 |
HIP 66894 |
24.33 |
| 2026-10-05 00:00 |
13:45:08.90 |
+58:36:36.4 |
HIP 66894 |
24.82 |
| 2026-10-05 12:00 |
13:45:12.53 |
+58:36:25.5 |
HIP 66894 |
25.31 |
| 2026-10-06 00:00 |
13:45:16.16 |
+58:36:14.9 |
HIP 66894 |
25.80 |
| 2026-10-06 12:00 |
13:45:19.80 |
+58:36:04.5 |
HIP 66894 |
26.29 |
| 2026-10-07 00:00 |
13:45:23.45 |
+58:35:54.3 |
HIP 66894 |
26.78 |
| 2026-10-07 12:00 |
13:45:27.11 |
+58:35:44.3 |
HIP 66894 |
27.26 |
| 2026-10-08 00:00 |
13:45:30.77 |
+58:35:34.6 |
HIP 66894 |
27.75 |
| 2026-10-08 12:00 |
13:45:34.44 |
+58:35:25.1 |
HIP 66894 |
28.24 |
| 2026-10-09 00:00 |
13:45:38.12 |
+58:35:15.8 |
HIP 66894 |
28.72 |
| 2026-10-09 12:00 |
13:45:41.81 |
+58:35:06.8 |
HIP 66894 |
29.21 |
| 2026-10-10 00:00 |
13:45:45.50 |
+58:34:58.0 |
HIP 66894 |
29.69 |
| 2026-10-10 12:00 |
13:45:49.20 |
+58:34:49.4 |
HIP 66894 |
30.17 |
| 2026-10-11 00:00 |
13:45:52.91 |
+58:34:41.1 |
HIP 66894 |
30.65 |