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
$$
M_a = (6.197 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.197 |
| n |
6.000 |
| gf |
0.961 |
| gb |
-0.509 |
| k |
1.000 |
| δ90 |
9.900 |
| 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 |
01:17:22.63 |
-12:51:26.4 |
HIP 6097 |
13.21 |
| 2026-03-26 12:00 |
01:17:24.46 |
-12:51:13.0 |
HIP 6097 |
12.82 |
| 2026-03-27 00:00 |
01:17:26.29 |
-12:50:59.8 |
HIP 6097 |
12.43 |
| 2026-03-27 12:00 |
01:17:28.12 |
-12:50:46.5 |
HIP 6097 |
12.06 |
| 2026-03-28 00:00 |
01:17:29.96 |
-12:50:33.4 |
HIP 6097 |
11.68 |
| 2026-03-28 12:00 |
01:17:31.80 |
-12:50:20.3 |
HIP 6097 |
11.32 |
| 2026-03-29 00:00 |
01:17:33.65 |
-12:50:07.4 |
HIP 6097 |
10.97 |
| 2026-03-29 12:00 |
01:17:35.50 |
-12:49:54.4 |
HIP 6097 |
10.62 |
| 2026-03-30 00:00 |
01:17:37.35 |
-12:49:41.6 |
HIP 6097 |
10.29 |
| 2026-03-30 12:00 |
01:17:39.21 |
-12:49:28.8 |
HIP 6097 |
9.97 |
| 2026-03-31 00:00 |
01:17:41.07 |
-12:49:16.1 |
HIP 6097 |
9.67 |
| 2026-03-31 12:00 |
01:17:42.93 |
-12:49:03.5 |
HIP 6097 |
9.38 |
| 2026-04-01 00:00 |
01:17:44.80 |
-12:48:51.0 |
HIP 6097 |
9.11 |
| 2026-04-01 12:00 |
01:17:46.66 |
-12:48:38.5 |
HIP 6097 |
8.85 |
| 2026-04-02 00:00 |
01:17:48.54 |
-12:48:26.2 |
HIP 6097 |
8.62 |
| 2026-04-02 12:00 |
01:17:50.41 |
-12:48:13.9 |
HIP 6097 |
8.41 |
| 2026-04-03 00:00 |
01:17:52.29 |
-12:48:01.6 |
HIP 6097 |
8.22 |
| 2026-04-03 12:00 |
01:17:54.16 |
-12:47:49.5 |
HIP 6097 |
8.05 |
| 2026-04-04 00:00 |
01:17:56.05 |
-12:47:37.5 |
HIP 6097 |
7.92 |
| 2026-04-04 12:00 |
01:17:57.93 |
-12:47:25.5 |
HIP 6097 |
7.81 |
| 2026-04-05 00:00 |
01:17:59.81 |
-12:47:13.6 |
HIP 6097 |
7.73 |
| 2026-04-05 12:00 |
01:18:01.70 |
-12:47:01.8 |
HIP 6097 |
7.69 |
| 2026-04-06 00:00 |
01:18:03.59 |
-12:46:50.1 |
HIP 6097 |
7.67 |
| 2026-04-06 12:00 |
01:18:05.48 |
-12:46:38.5 |
HIP 6097 |
7.68 |
| 2026-04-07 00:00 |
01:18:07.37 |
-12:46:26.9 |
HIP 6097 |
7.73 |
| 2026-04-07 12:00 |
01:18:09.26 |
-12:46:15.5 |
HIP 6097 |
7.80 |
| 2026-04-08 00:00 |
01:18:11.15 |
-12:46:04.1 |
HIP 6097 |
7.91 |
| 2026-04-08 12:00 |
01:18:13.05 |
-12:45:52.9 |
HIP 6097 |
8.04 |
| 2026-04-09 00:00 |
01:18:14.94 |
-12:45:41.7 |
HIP 6097 |
8.20 |
| 2026-04-09 12:00 |
01:18:16.84 |
-12:45:30.6 |
HIP 6097 |
8.38 |
| 2026-04-10 00:00 |
01:18:18.74 |
-12:45:19.6 |
HIP 6097 |
8.59 |
| 2026-04-10 12:00 |
01:18:20.63 |
-12:45:08.7 |
HIP 6097 |
8.82 |
| 2026-04-11 00:00 |
01:18:22.53 |
-12:44:57.9 |
HIP 6097 |
9.07 |
| 2026-04-11 12:00 |
01:18:24.43 |
-12:44:47.2 |
HIP 6097 |
9.34 |
| 2026-04-12 00:00 |
01:18:26.33 |
-12:44:36.6 |
HIP 6097 |
9.62 |
| 2026-04-12 12:00 |
01:18:28.22 |
-12:44:26.1 |
HIP 6097 |
9.92 |
| 2026-04-13 00:00 |
01:18:30.12 |
-12:44:15.6 |
HIP 6097 |
10.24 |
| 2026-04-13 12:00 |
01:18:32.02 |
-12:44:05.3 |
HIP 6097 |
10.56 |
| 2026-04-14 00:00 |
01:18:33.92 |
-12:43:55.1 |
HIP 6097 |
10.90 |
| 2026-04-14 12:00 |
01:18:35.81 |
-12:43:45.0 |
HIP 6097 |
11.24 |
| 2026-04-15 00:00 |
01:18:37.71 |
-12:43:34.9 |
HIP 6097 |
11.60 |
| 2026-04-15 12:00 |
01:18:39.60 |
-12:43:25.0 |
HIP 6097 |
11.96 |
| 2026-04-16 00:00 |
01:18:41.49 |
-12:43:15.2 |
HIP 6097 |
12.33 |