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) |
| 2026-05-12 00:00 |
18:11:42.85 |
-42:09:34.1 |
HIP 89274 |
16.53 |
| 2026-05-12 12:00 |
18:11:40.76 |
-42:09:43.3 |
HIP 89274 |
16.81 |
| 2026-05-13 00:00 |
18:11:38.65 |
-42:09:52.6 |
HIP 89274 |
17.09 |
| 2026-05-13 12:00 |
18:11:36.52 |
-42:10:01.7 |
HIP 89274 |
17.38 |
| 2026-05-14 00:00 |
18:11:34.37 |
-42:10:10.8 |
HIP 89274 |
17.68 |
| 2026-05-14 12:00 |
18:11:32.21 |
-42:10:19.8 |
HIP 89274 |
17.99 |
| 2026-05-15 00:00 |
18:11:30.03 |
-42:10:28.7 |
HIP 89274 |
18.31 |
| 2026-05-15 12:00 |
18:11:27.84 |
-42:10:37.6 |
HIP 89274 |
18.63 |
| 2026-05-16 00:00 |
18:11:25.62 |
-42:10:46.4 |
HIP 89031 |
18.78 |
| 2026-05-16 12:00 |
18:11:23.39 |
-42:10:55.2 |
HIP 89031 |
18.39 |
| 2026-05-17 00:00 |
18:11:21.15 |
-42:11:03.8 |
HIP 89031 |
18.00 |
| 2026-05-17 12:00 |
18:11:18.89 |
-42:11:12.4 |
HIP 89031 |
17.61 |
| 2026-05-18 00:00 |
18:11:16.62 |
-42:11:21.0 |
HIP 89031 |
17.22 |
| 2026-05-18 12:00 |
18:11:14.32 |
-42:11:29.4 |
HIP 89031 |
16.83 |
| 2026-05-19 00:00 |
18:11:12.02 |
-42:11:37.8 |
HIP 89031 |
16.45 |
| 2026-05-19 12:00 |
18:11:09.70 |
-42:11:46.1 |
HIP 89031 |
16.07 |
| 2026-05-20 00:00 |
18:11:07.36 |
-42:11:54.3 |
HIP 89031 |
15.69 |
| 2026-05-20 12:00 |
18:11:05.01 |
-42:12:02.5 |
HIP 89031 |
15.32 |
| 2026-05-21 00:00 |
18:11:02.65 |
-42:12:10.5 |
HIP 89031 |
14.95 |
| 2026-05-21 12:00 |
18:11:00.27 |
-42:12:18.5 |
HIP 89031 |
14.58 |
| 2026-05-22 00:00 |
18:10:57.87 |
-42:12:26.5 |
HIP 89031 |
14.22 |
| 2026-05-22 12:00 |
18:10:55.47 |
-42:12:34.3 |
HIP 89031 |
13.86 |
| 2026-05-23 00:00 |
18:10:53.05 |
-42:12:42.1 |
HIP 89031 |
13.51 |
| 2026-05-23 12:00 |
18:10:50.61 |
-42:12:49.8 |
HIP 89031 |
13.17 |
| 2026-05-24 00:00 |
18:10:48.17 |
-42:12:57.4 |
HIP 89031 |
12.84 |
| 2026-05-24 12:00 |
18:10:45.71 |
-42:13:04.9 |
HIP 89031 |
12.51 |
| 2026-05-25 00:00 |
18:10:43.24 |
-42:13:12.4 |
HIP 89031 |
12.20 |
| 2026-05-25 12:00 |
18:10:40.75 |
-42:13:19.8 |
HIP 89031 |
11.89 |
| 2026-05-26 00:00 |
18:10:38.25 |
-42:13:27.1 |
HIP 89031 |
11.60 |
| 2026-05-26 12:00 |
18:10:35.75 |
-42:13:34.3 |
HIP 89031 |
11.32 |
| 2026-05-27 00:00 |
18:10:33.22 |
-42:13:41.4 |
HIP 89031 |
11.05 |
| 2026-05-27 12:00 |
18:10:30.69 |
-42:13:48.5 |
HIP 89031 |
10.80 |
| 2026-05-28 00:00 |
18:10:28.15 |
-42:13:55.4 |
HIP 89031 |
10.57 |
| 2026-05-28 12:00 |
18:10:25.59 |
-42:14:02.3 |
HIP 89031 |
10.36 |
| 2026-05-29 00:00 |
18:10:23.02 |
-42:14:09.1 |
HIP 89031 |
10.16 |
| 2026-05-29 12:00 |
18:10:20.45 |
-42:14:15.8 |
HIP 89031 |
9.99 |
| 2026-05-30 00:00 |
18:10:17.86 |
-42:14:22.5 |
HIP 89031 |
9.84 |
| 2026-05-30 12:00 |
18:10:15.26 |
-42:14:29.0 |
HIP 89031 |
9.71 |
| 2026-05-31 00:00 |
18:10:12.65 |
-42:14:35.5 |
HIP 89031 |
9.61 |
| 2026-05-31 12:00 |
18:10:10.03 |
-42:14:41.9 |
HIP 89031 |
9.53 |
| 2026-06-01 00:00 |
18:10:07.40 |
-42:14:48.2 |
HIP 89031 |
9.48 |
| 2026-06-01 12:00 |
18:10:04.76 |
-42:14:54.4 |
HIP 89031 |
9.46 |
| 2026-06-02 00:00 |
18:10:02.11 |
-42:15:00.5 |
HIP 89031 |
9.47 |