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) |
| 2026-09-20 00:00 |
13:37:03.65 |
-31:47:42.4 |
HIP 66527 |
30.17 |
| 2026-09-20 12:00 |
13:37:33.53 |
-31:49:36.7 |
HIP 66527 |
25.93 |
| 2026-09-21 00:00 |
13:38:03.50 |
-31:51:31.9 |
HIP 66527 |
22.82 |
| 2026-09-21 12:00 |
13:38:33.56 |
-31:53:27.9 |
HIP 66527 |
21.38 |
| 2026-09-22 00:00 |
13:39:03.71 |
-31:55:24.7 |
HIP 66527 |
21.95 |
| 2026-09-22 12:00 |
13:39:33.95 |
-31:57:22.4 |
HIP 66527 |
24.41 |
| 2026-09-23 00:00 |
13:40:04.29 |
-31:59:20.9 |
HIP 66527 |
28.29 |
| 2026-09-23 12:00 |
13:40:34.71 |
-32:01:20.2 |
HIP 66527 |
33.09 |
| 2026-09-24 00:00 |
13:41:05.21 |
-32:03:20.3 |
HIP 66527 |
38.49 |
| 2026-09-24 12:00 |
13:41:35.81 |
-32:05:21.3 |
HIP 67026 |
36.58 |
| 2026-09-25 00:00 |
13:42:06.50 |
-32:07:23.0 |
HIP 67026 |
32.01 |
| 2026-09-25 12:00 |
13:42:37.27 |
-32:09:25.6 |
HIP 67026 |
28.36 |
| 2026-09-26 00:00 |
13:43:08.13 |
-32:11:28.9 |
HIP 67026 |
26.04 |
| 2026-09-26 12:00 |
13:43:39.07 |
-32:13:33.0 |
HIP 67026 |
25.42 |
| 2026-09-27 00:00 |
13:44:10.11 |
-32:15:37.9 |
HIP 67026 |
26.64 |
| 2026-09-27 12:00 |
13:44:41.22 |
-32:17:43.6 |
HIP 67026 |
29.49 |
| 2026-09-28 00:00 |
13:45:12.43 |
-32:19:50.0 |
HIP 67224 |
29.41 |
| 2026-09-28 12:00 |
13:45:43.71 |
-32:21:57.3 |
HIP 67224 |
24.33 |
| 2026-09-29 00:00 |
13:46:15.09 |
-32:24:05.2 |
HIP 67308 |
18.44 |
| 2026-09-29 12:00 |
13:46:46.54 |
-32:26:14.0 |
HIP 67308 |
11.73 |
| 2026-09-30 00:00 |
13:47:18.09 |
-32:28:23.5 |
HIP 67308 |
5.69 |
| 2026-09-30 12:00 |
13:47:49.71 |
-32:30:33.7 |
HIP 67308 |
5.03 |
| 2026-10-01 00:00 |
13:48:21.42 |
-32:32:44.7 |
HIP 67308 |
10.82 |
| 2026-10-01 12:00 |
13:48:53.21 |
-32:34:56.4 |
HIP 67508 |
14.79 |
| 2026-10-02 00:00 |
13:49:25.08 |
-32:37:08.9 |
HIP 67508 |
7.73 |
| 2026-10-02 12:00 |
13:49:57.04 |
-32:39:22.1 |
HIP 67508 |
0.73 |
| 2026-10-03 00:00 |
13:50:29.08 |
-32:41:36.0 |
HIP 67508 |
6.47 |
| 2026-10-03 12:00 |
13:51:01.20 |
-32:43:50.6 |
HIP 67508 |
13.59 |
| 2026-10-04 00:00 |
13:51:33.40 |
-32:46:06.0 |
HIP 67669 |
13.96 |
| 2026-10-04 12:00 |
13:52:05.68 |
-32:48:22.0 |
HIP 67669 |
11.77 |
| 2026-10-05 00:00 |
13:52:38.05 |
-32:50:38.8 |
HIP 67669 |
13.57 |
| 2026-10-05 12:00 |
13:53:10.49 |
-32:52:56.3 |
HIP 67843 |
13.63 |
| 2026-10-06 00:00 |
13:53:43.01 |
-32:55:14.5 |
HIP 67843 |
13.42 |
| 2026-10-06 12:00 |
13:54:15.61 |
-32:57:33.4 |
HIP 67877 |
11.15 |
| 2026-10-07 00:00 |
13:54:48.29 |
-32:59:52.9 |
HIP 67877 |
12.14 |
| 2026-10-07 12:00 |
13:55:21.05 |
-33:02:13.2 |
HIP 67877 |
16.59 |
| 2026-10-08 00:00 |
13:55:53.89 |
-33:04:34.1 |
HIP 68008 |
20.60 |
| 2026-10-08 12:00 |
13:56:26.80 |
-33:06:55.7 |
HIP 68008 |
24.85 |
| 2026-10-09 00:00 |
13:56:59.79 |
-33:09:18.0 |
HIP 68305 |
24.32 |
| 2026-10-09 12:00 |
13:57:32.85 |
-33:11:40.9 |
HIP 68305 |
17.71 |
| 2026-10-10 00:00 |
13:58:05.99 |
-33:14:04.5 |
HIP 68305 |
11.97 |
| 2026-10-10 12:00 |
13:58:39.21 |
-33:16:28.8 |
HIP 68305 |
8.97 |
| 2026-10-11 00:00 |
13:59:12.49 |
-33:18:53.7 |
HIP 68305 |
11.23 |