メタデータ
| 項目 |
値 |
| Designation |
102P/Shoemaker 1 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-09-01T03:44:39.696000Z |
| Orbit solution date (soln_date, UTC) |
2022-02-06T20:54:12Z |
| Obs used |
392 |
| NEO |
- |
| M1 |
16.200 |
| K1 |
5.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-05-31.0000000 |
| e |
0.47316549 |
| q (au) |
1.968583 |
| a (au) |
3.736626 |
| i (deg) |
26.244906 |
| Ω (om, deg) |
339.873338 |
| ω (w, deg) |
18.744602 |
| M (ma, deg) |
297.483004 |
等級
散乱 + 全体線形
$$
M_a = (14.195 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.195 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.784 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
12:55:04.78 |
-30:05:09.4 |
HIP 63083 |
6.06 |
| 2026-07-29 12:00 |
12:55:21.23 |
-30:05:03.0 |
HIP 63083 |
2.57 |
| 2026-07-30 00:00 |
12:55:37.86 |
-30:04:58.0 |
HIP 63083 |
1.40 |
| 2026-07-30 12:00 |
12:55:54.64 |
-30:04:54.3 |
HIP 63083 |
4.85 |
| 2026-07-31 00:00 |
12:56:11.60 |
-30:04:52.1 |
HIP 63083 |
8.50 |
| 2026-07-31 12:00 |
12:56:28.71 |
-30:04:51.1 |
HIP 63083 |
12.19 |
| 2026-08-01 00:00 |
12:56:45.99 |
-30:04:51.5 |
HIP 63083 |
15.93 |
| 2026-08-01 12:00 |
12:57:03.44 |
-30:04:53.3 |
HIP 63083 |
19.70 |
| 2026-08-02 00:00 |
12:57:21.04 |
-30:04:56.4 |
HIP 63357 |
21.40 |
| 2026-08-02 12:00 |
12:57:38.80 |
-30:05:00.8 |
HIP 63357 |
17.71 |
| 2026-08-03 00:00 |
12:57:56.73 |
-30:05:06.6 |
HIP 63357 |
14.08 |
| 2026-08-03 12:00 |
12:58:14.81 |
-30:05:13.7 |
HIP 63357 |
10.60 |
| 2026-08-04 00:00 |
12:58:33.05 |
-30:05:22.1 |
HIP 63357 |
7.55 |
| 2026-08-04 12:00 |
12:58:51.45 |
-30:05:31.9 |
HIP 63357 |
5.76 |
| 2026-08-05 00:00 |
12:59:10.00 |
-30:05:43.0 |
HIP 63357 |
6.44 |
| 2026-08-05 12:00 |
12:59:28.71 |
-30:05:55.4 |
HIP 63357 |
9.10 |
| 2026-08-06 00:00 |
12:59:47.58 |
-30:06:09.2 |
HIP 63357 |
12.57 |
| 2026-08-06 12:00 |
13:00:06.60 |
-30:06:24.3 |
HIP 63357 |
16.37 |
| 2026-08-07 00:00 |
13:00:25.77 |
-30:06:40.7 |
HIP 63357 |
20.33 |
| 2026-08-07 12:00 |
13:00:45.10 |
-30:06:58.4 |
HIP 63357 |
24.40 |
| 2026-08-08 00:00 |
13:01:04.58 |
-30:07:17.4 |
HIP 63657 |
25.75 |
| 2026-08-08 12:00 |
13:01:24.21 |
-30:07:37.7 |
HIP 63657 |
22.00 |
| 2026-08-09 00:00 |
13:01:43.99 |
-30:07:59.3 |
HIP 63657 |
18.43 |
| 2026-08-09 12:00 |
13:02:03.92 |
-30:08:22.3 |
HIP 63657 |
15.20 |
| 2026-08-10 00:00 |
13:02:24.00 |
-30:08:46.5 |
HIP 63657 |
12.61 |
| 2026-08-10 12:00 |
13:02:44.23 |
-30:09:12.1 |
HIP 63657 |
11.15 |
| 2026-08-11 00:00 |
13:03:04.61 |
-30:09:38.9 |
HIP 63657 |
11.31 |
| 2026-08-11 12:00 |
13:03:25.13 |
-30:10:07.0 |
HIP 63657 |
13.06 |
| 2026-08-12 00:00 |
13:03:45.80 |
-30:10:36.4 |
HIP 63657 |
15.92 |
| 2026-08-12 12:00 |
13:04:06.61 |
-30:11:07.1 |
HIP 63846 |
12.69 |
| 2026-08-13 00:00 |
13:04:27.57 |
-30:11:39.1 |
HIP 63846 |
8.14 |
| 2026-08-13 12:00 |
13:04:48.67 |
-30:12:12.3 |
HIP 63846 |
3.60 |
| 2026-08-14 00:00 |
13:05:09.92 |
-30:12:46.9 |
HIP 63846 |
1.39 |
| 2026-08-14 12:00 |
13:05:31.30 |
-30:13:22.7 |
HIP 63846 |
5.84 |
| 2026-08-15 00:00 |
13:05:52.83 |
-30:13:59.7 |
HIP 63846 |
10.51 |
| 2026-08-15 12:00 |
13:06:14.50 |
-30:14:38.0 |
HIP 63846 |
15.22 |
| 2026-08-16 00:00 |
13:06:36.30 |
-30:15:17.5 |
HIP 64055 |
17.31 |
| 2026-08-16 12:00 |
13:06:58.24 |
-30:15:58.3 |
HIP 64055 |
13.41 |
| 2026-08-17 00:00 |
13:07:20.32 |
-30:16:40.4 |
HIP 64055 |
10.25 |
| 2026-08-17 12:00 |
13:07:42.54 |
-30:17:23.6 |
HIP 64055 |
8.73 |
| 2026-08-18 00:00 |
13:08:04.89 |
-30:18:08.1 |
HIP 64055 |
9.72 |
| 2026-08-18 12:00 |
13:08:27.37 |
-30:18:53.8 |
HIP 64055 |
12.67 |
| 2026-08-19 00:00 |
13:08:49.99 |
-30:19:40.8 |
HIP 64055 |
16.60 |