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 |
0.997 |
| 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) |
| 2026-05-12 00:00 |
12:55:28.41 |
-34:16:23.4 |
HIP 63102 |
35.49 |
| 2026-05-12 12:00 |
12:55:10.43 |
-34:14:11.3 |
HIP 63102 |
33.82 |
| 2026-05-13 00:00 |
12:54:52.65 |
-34:11:58.6 |
HIP 63102 |
32.62 |
| 2026-05-13 12:00 |
12:54:35.06 |
-34:09:45.1 |
HIP 63102 |
31.93 |
| 2026-05-14 00:00 |
12:54:17.67 |
-34:07:31.0 |
HIP 63102 |
31.77 |
| 2026-05-14 12:00 |
12:54:00.49 |
-34:05:16.2 |
HIP 63102 |
32.14 |
| 2026-05-15 00:00 |
12:53:43.50 |
-34:03:00.8 |
HIP 63102 |
33.02 |
| 2026-05-15 12:00 |
12:53:26.73 |
-34:00:44.9 |
HIP 62683 |
34.32 |
| 2026-05-16 00:00 |
12:53:10.16 |
-33:58:28.3 |
HIP 62683 |
30.92 |
| 2026-05-16 12:00 |
12:52:53.80 |
-33:56:11.3 |
HIP 62683 |
27.75 |
| 2026-05-17 00:00 |
12:52:37.66 |
-33:53:53.7 |
HIP 62683 |
24.90 |
| 2026-05-17 12:00 |
12:52:21.73 |
-33:51:35.7 |
HIP 62683 |
22.47 |
| 2026-05-18 00:00 |
12:52:06.02 |
-33:49:17.3 |
HIP 62683 |
20.58 |
| 2026-05-18 12:00 |
12:51:50.52 |
-33:46:58.5 |
HIP 62683 |
19.38 |
| 2026-05-19 00:00 |
12:51:35.25 |
-33:44:39.3 |
HIP 62656 |
17.66 |
| 2026-05-19 12:00 |
12:51:20.20 |
-33:42:19.8 |
HIP 62656 |
13.83 |
| 2026-05-20 00:00 |
12:51:05.37 |
-33:40:00.0 |
HIP 62656 |
10.10 |
| 2026-05-20 12:00 |
12:50:50.77 |
-33:37:39.9 |
HIP 62656 |
6.56 |
| 2026-05-21 00:00 |
12:50:36.39 |
-33:35:19.6 |
HIP 62656 |
3.71 |
| 2026-05-21 12:00 |
12:50:22.25 |
-33:32:59.0 |
HIP 62656 |
3.66 |
| 2026-05-22 00:00 |
12:50:08.33 |
-33:30:38.3 |
HIP 62656 |
6.42 |
| 2026-05-22 12:00 |
12:49:54.64 |
-33:28:17.4 |
HIP 62656 |
9.82 |
| 2026-05-23 00:00 |
12:49:41.19 |
-33:25:56.4 |
HIP 62656 |
13.34 |
| 2026-05-23 12:00 |
12:49:27.97 |
-33:23:35.3 |
HIP 62656 |
16.90 |
| 2026-05-24 00:00 |
12:49:14.98 |
-33:21:14.2 |
HIP 62481 |
17.44 |
| 2026-05-24 12:00 |
12:49:02.23 |
-33:18:53.0 |
HIP 62481 |
13.89 |
| 2026-05-25 00:00 |
12:48:49.71 |
-33:16:31.8 |
HIP 62481 |
10.38 |
| 2026-05-25 12:00 |
12:48:37.43 |
-33:14:10.6 |
HIP 62481 |
6.91 |
| 2026-05-26 00:00 |
12:48:25.39 |
-33:11:49.4 |
HIP 62481 |
3.50 |
| 2026-05-26 12:00 |
12:48:13.59 |
-33:09:28.3 |
HIP 62481 |
0.68 |
| 2026-05-27 00:00 |
12:48:02.03 |
-33:07:07.3 |
HIP 62481 |
3.41 |
| 2026-05-27 12:00 |
12:47:50.70 |
-33:04:46.4 |
HIP 62481 |
6.71 |
| 2026-05-28 00:00 |
12:47:39.62 |
-33:02:25.6 |
HIP 62481 |
10.00 |
| 2026-05-28 12:00 |
12:47:28.78 |
-33:00:05.1 |
HIP 62481 |
13.25 |
| 2026-05-29 00:00 |
12:47:18.18 |
-32:57:44.7 |
HIP 62481 |
16.47 |
| 2026-05-29 12:00 |
12:47:07.82 |
-32:55:24.5 |
HIP 62481 |
19.65 |
| 2026-05-30 00:00 |
12:46:57.71 |
-32:53:04.6 |
HIP 62481 |
22.80 |
| 2026-05-30 12:00 |
12:46:47.83 |
-32:50:44.9 |
HIP 62481 |
25.91 |
| 2026-05-31 00:00 |
12:46:38.21 |
-32:48:25.5 |
HIP 62481 |
28.98 |
| 2026-05-31 12:00 |
12:46:28.83 |
-32:46:06.5 |
HIP 62481 |
32.02 |
| 2026-06-01 00:00 |
12:46:19.69 |
-32:43:47.8 |
HIP 62485 |
34.81 |
| 2026-06-01 12:00 |
12:46:10.80 |
-32:41:29.4 |
HIP 62485 |
34.67 |
| 2026-06-02 00:00 |
12:46:02.15 |
-32:39:11.4 |
HIP 62485 |
34.74 |