メタデータ
| 項目 |
値 |
| Designation |
C/1986 E1 (Shoemaker) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1986-03-11T06:37:30.054720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:33Z |
| Obs used |
37 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1986-06-17.0000000 |
| e |
0.94684032 |
| q (au) |
3.593858 |
| a (au) |
67.604972 |
| i (deg) |
159.808447 |
| Ω (om, deg) |
294.843600 |
| ω (w, deg) |
123.567998 |
| M (ma, deg) |
0.173276 |
等級
散乱 + 全体線形
$$
M_a = (6.195 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.195 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.502 |
| 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) |
| 2026-06-01 00:00 |
01:21:13.02 |
-12:36:37.3 |
HIP 6305 |
8.52 |
| 2026-06-01 12:00 |
01:21:14.25 |
-12:36:39.0 |
HIP 6305 |
8.61 |
| 2026-06-02 00:00 |
01:21:15.46 |
-12:36:40.7 |
HIP 6305 |
8.70 |
| 2026-06-02 12:00 |
01:21:16.66 |
-12:36:42.6 |
HIP 6305 |
8.80 |
| 2026-06-03 00:00 |
01:21:17.85 |
-12:36:44.7 |
HIP 6305 |
8.90 |
| 2026-06-03 12:00 |
01:21:19.03 |
-12:36:46.9 |
HIP 6305 |
9.01 |
| 2026-06-04 00:00 |
01:21:20.19 |
-12:36:49.1 |
HIP 6305 |
9.12 |
| 2026-06-04 12:00 |
01:21:21.34 |
-12:36:51.6 |
HIP 6305 |
9.24 |
| 2026-06-05 00:00 |
01:21:22.48 |
-12:36:54.1 |
HIP 6305 |
9.36 |
| 2026-06-05 12:00 |
01:21:23.61 |
-12:36:56.8 |
HIP 6305 |
9.49 |
| 2026-06-06 00:00 |
01:21:24.72 |
-12:36:59.7 |
HIP 6305 |
9.61 |
| 2026-06-06 12:00 |
01:21:25.82 |
-12:37:02.6 |
HIP 6305 |
9.74 |
| 2026-06-07 00:00 |
01:21:26.91 |
-12:37:05.7 |
HIP 6305 |
9.87 |
| 2026-06-07 12:00 |
01:21:27.98 |
-12:37:08.9 |
HIP 6305 |
10.00 |
| 2026-06-08 00:00 |
01:21:29.04 |
-12:37:12.3 |
HIP 6305 |
10.14 |
| 2026-06-08 12:00 |
01:21:30.09 |
-12:37:15.7 |
HIP 6305 |
10.27 |
| 2026-06-09 00:00 |
01:21:31.12 |
-12:37:19.4 |
HIP 6305 |
10.41 |
| 2026-06-09 12:00 |
01:21:32.14 |
-12:37:23.1 |
HIP 6305 |
10.55 |
| 2026-06-10 00:00 |
01:21:33.14 |
-12:37:27.0 |
HIP 6305 |
10.69 |
| 2026-06-10 12:00 |
01:21:34.14 |
-12:37:31.0 |
HIP 6305 |
10.82 |
| 2026-06-11 00:00 |
01:21:35.11 |
-12:37:35.1 |
HIP 6305 |
10.96 |
| 2026-06-11 12:00 |
01:21:36.08 |
-12:37:39.4 |
HIP 6305 |
11.10 |
| 2026-06-12 00:00 |
01:21:37.03 |
-12:37:43.8 |
HIP 6305 |
11.24 |
| 2026-06-12 12:00 |
01:21:37.96 |
-12:37:48.3 |
HIP 6305 |
11.37 |
| 2026-06-13 00:00 |
01:21:38.88 |
-12:37:53.0 |
HIP 6305 |
11.51 |
| 2026-06-13 12:00 |
01:21:39.79 |
-12:37:57.7 |
HIP 6305 |
11.64 |
| 2026-06-14 00:00 |
01:21:40.68 |
-12:38:02.7 |
HIP 6305 |
11.78 |
| 2026-06-14 12:00 |
01:21:41.56 |
-12:38:07.7 |
HIP 6305 |
11.91 |
| 2026-06-15 00:00 |
01:21:42.42 |
-12:38:12.9 |
HIP 6305 |
12.04 |
| 2026-06-15 12:00 |
01:21:43.27 |
-12:38:18.2 |
HIP 6305 |
12.17 |
| 2026-06-16 00:00 |
01:21:44.11 |
-12:38:23.6 |
HIP 6305 |
12.30 |
| 2026-06-16 12:00 |
01:21:44.93 |
-12:38:29.2 |
HIP 6305 |
12.43 |
| 2026-06-17 00:00 |
01:21:45.73 |
-12:38:34.9 |
HIP 6305 |
12.56 |
| 2026-06-17 12:00 |
01:21:46.52 |
-12:38:40.7 |
HIP 6305 |
12.68 |
| 2026-06-18 00:00 |
01:21:47.30 |
-12:38:46.6 |
HIP 6305 |
12.80 |
| 2026-06-18 12:00 |
01:21:48.05 |
-12:38:52.7 |
HIP 6305 |
12.92 |
| 2026-06-19 00:00 |
01:21:48.80 |
-12:38:58.9 |
HIP 6305 |
13.04 |
| 2026-06-19 12:00 |
01:21:49.53 |
-12:39:05.2 |
HIP 6305 |
13.16 |
| 2026-06-20 00:00 |
01:21:50.24 |
-12:39:11.6 |
HIP 6305 |
13.27 |
| 2026-06-20 12:00 |
01:21:50.94 |
-12:39:18.2 |
HIP 6305 |
13.38 |
| 2026-06-21 00:00 |
01:21:51.62 |
-12:39:24.9 |
HIP 6305 |
13.49 |
| 2026-06-21 12:00 |
01:21:52.29 |
-12:39:31.7 |
HIP 6305 |
13.60 |
| 2026-06-22 00:00 |
01:21:52.94 |
-12:39:38.7 |
HIP 6305 |
13.71 |