メタデータ
| 項目 |
値 |
| Designation |
C/1993 F1 (Mueller) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1992-08-04T20:31:29.202240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:43Z |
| Obs used |
102 |
| NEO |
- |
| M1 |
6.400 |
| K1 |
9.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1993-08-21.0000000 |
| e |
1.00540314 |
| q (au) |
5.901066 |
| a (au) |
-1092.155238 |
| i (deg) |
53.940235 |
| Ω (om, deg) |
77.516468 |
| ω (w, deg) |
62.030036 |
| M (ma, deg) |
0.010408 |
等級
散乱 + 全体線形
$$
M_a = (0.931 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
0.931 |
| 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) |
| 2026-03-26 00:00 |
18:13:24.09 |
-41:51:50.0 |
HIP 89376 |
10.92 |
| 2026-03-26 12:00 |
18:13:24.14 |
-41:52:02.2 |
HIP 89376 |
10.86 |
| 2026-03-27 00:00 |
18:13:24.16 |
-41:52:14.4 |
HIP 89376 |
10.81 |
| 2026-03-27 12:00 |
18:13:24.16 |
-41:52:26.6 |
HIP 89376 |
10.77 |
| 2026-03-28 00:00 |
18:13:24.13 |
-41:52:38.8 |
HIP 89376 |
10.74 |
| 2026-03-28 12:00 |
18:13:24.08 |
-41:52:51.0 |
HIP 89376 |
10.71 |
| 2026-03-29 00:00 |
18:13:24.00 |
-41:53:03.2 |
HIP 89376 |
10.70 |
| 2026-03-29 12:00 |
18:13:23.89 |
-41:53:15.4 |
HIP 89376 |
10.69 |
| 2026-03-30 00:00 |
18:13:23.76 |
-41:53:27.6 |
HIP 89376 |
10.69 |
| 2026-03-30 12:00 |
18:13:23.60 |
-41:53:39.9 |
HIP 89376 |
10.70 |
| 2026-03-31 00:00 |
18:13:23.42 |
-41:53:52.1 |
HIP 89376 |
10.72 |
| 2026-03-31 12:00 |
18:13:23.21 |
-41:54:04.3 |
HIP 89376 |
10.75 |
| 2026-04-01 00:00 |
18:13:22.98 |
-41:54:16.5 |
HIP 89376 |
10.78 |
| 2026-04-01 12:00 |
18:13:22.72 |
-41:54:28.7 |
HIP 89376 |
10.83 |
| 2026-04-02 00:00 |
18:13:22.44 |
-41:54:40.9 |
HIP 89376 |
10.88 |
| 2026-04-02 12:00 |
18:13:22.13 |
-41:54:53.1 |
HIP 89376 |
10.94 |
| 2026-04-03 00:00 |
18:13:21.79 |
-41:55:05.3 |
HIP 89376 |
11.01 |
| 2026-04-03 12:00 |
18:13:21.43 |
-41:55:17.5 |
HIP 89376 |
11.09 |
| 2026-04-04 00:00 |
18:13:21.05 |
-41:55:29.7 |
HIP 89376 |
11.18 |
| 2026-04-04 12:00 |
18:13:20.64 |
-41:55:41.8 |
HIP 89376 |
11.27 |
| 2026-04-05 00:00 |
18:13:20.20 |
-41:55:54.0 |
HIP 89376 |
11.37 |
| 2026-04-05 12:00 |
18:13:19.74 |
-41:56:06.1 |
HIP 89376 |
11.48 |
| 2026-04-06 00:00 |
18:13:19.26 |
-41:56:18.3 |
HIP 89376 |
11.60 |
| 2026-04-06 12:00 |
18:13:18.75 |
-41:56:30.4 |
HIP 89376 |
11.73 |
| 2026-04-07 00:00 |
18:13:18.21 |
-41:56:42.5 |
HIP 89376 |
11.86 |
| 2026-04-07 12:00 |
18:13:17.65 |
-41:56:54.7 |
HIP 89376 |
12.00 |
| 2026-04-08 00:00 |
18:13:17.06 |
-41:57:06.7 |
HIP 89376 |
12.15 |
| 2026-04-08 12:00 |
18:13:16.45 |
-41:57:18.8 |
HIP 89376 |
12.30 |
| 2026-04-09 00:00 |
18:13:15.82 |
-41:57:30.9 |
HIP 89376 |
12.46 |
| 2026-04-09 12:00 |
18:13:15.16 |
-41:57:42.9 |
HIP 89376 |
12.63 |
| 2026-04-10 00:00 |
18:13:14.47 |
-41:57:55.0 |
HIP 89376 |
12.81 |
| 2026-04-10 12:00 |
18:13:13.76 |
-41:58:07.0 |
HIP 89376 |
12.99 |
| 2026-04-11 00:00 |
18:13:13.02 |
-41:58:19.0 |
HIP 89376 |
13.17 |
| 2026-04-11 12:00 |
18:13:12.27 |
-41:58:31.0 |
HIP 89376 |
13.37 |
| 2026-04-12 00:00 |
18:13:11.48 |
-41:58:42.9 |
HIP 89376 |
13.57 |
| 2026-04-12 12:00 |
18:13:10.67 |
-41:58:54.9 |
HIP 89376 |
13.77 |
| 2026-04-13 00:00 |
18:13:09.84 |
-41:59:06.8 |
HIP 89376 |
13.98 |
| 2026-04-13 12:00 |
18:13:08.98 |
-41:59:18.7 |
HIP 89376 |
14.20 |
| 2026-04-14 00:00 |
18:13:08.10 |
-41:59:30.5 |
HIP 89376 |
14.42 |
| 2026-04-14 12:00 |
18:13:07.19 |
-41:59:42.4 |
HIP 89376 |
14.64 |
| 2026-04-15 00:00 |
18:13:06.26 |
-41:59:54.2 |
HIP 89376 |
14.88 |
| 2026-04-15 12:00 |
18:13:05.30 |
-42:00:06.0 |
HIP 89376 |
15.11 |
| 2026-04-16 00:00 |
18:13:04.32 |
-42:00:17.8 |
HIP 89376 |
15.35 |