メタデータ
| 項目 |
値 |
| Designation |
223P/Skiff |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-08-14T12:47:49.845120Z |
| Orbit solution date (soln_date, UTC) |
2026-09-04T08:42:17Z |
| Obs used |
786 |
| NEO |
- |
| M1 |
15.500 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-11-08.0000000 |
| e |
0.41641042 |
| q (au) |
2.420697 |
| a (au) |
4.147944 |
| i (deg) |
27.053885 |
| Ω (om, deg) |
346.825423 |
| ω (w, deg) |
37.870338 |
| M (ma, deg) |
52.555420 |
等級
散乱 + 全体線形
$$
M_a = (17.223 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
17.223 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.631 |
| 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 |
19:52:21.89 |
-42:08:21.1 |
HIP 97710 |
10.50 |
| 2026-09-20 12:00 |
19:52:20.38 |
-42:03:06.7 |
HIP 97775 |
8.47 |
| 2026-09-21 00:00 |
19:52:19.30 |
-41:57:51.4 |
HIP 97775 |
3.64 |
| 2026-09-21 12:00 |
19:52:18.65 |
-41:52:35.3 |
HIP 97775 |
3.23 |
| 2026-09-22 00:00 |
19:52:18.44 |
-41:47:18.5 |
HIP 97775 |
7.98 |
| 2026-09-22 12:00 |
19:52:18.66 |
-41:42:00.9 |
HIP 97775 |
13.17 |
| 2026-09-23 00:00 |
19:52:19.30 |
-41:36:42.5 |
HIP 97775 |
18.44 |
| 2026-09-23 12:00 |
19:52:20.38 |
-41:31:23.4 |
HIP 97775 |
23.74 |
| 2026-09-24 00:00 |
19:52:21.87 |
-41:26:03.7 |
HIP 97680 |
28.62 |
| 2026-09-24 12:00 |
19:52:23.79 |
-41:20:43.3 |
HIP 97680 |
24.39 |
| 2026-09-25 00:00 |
19:52:26.12 |
-41:15:22.2 |
HIP 97680 |
20.74 |
| 2026-09-25 12:00 |
19:52:28.88 |
-41:10:00.5 |
HIP 97680 |
18.05 |
| 2026-09-26 00:00 |
19:52:32.04 |
-41:04:38.2 |
HIP 97680 |
16.78 |
| 2026-09-26 12:00 |
19:52:35.62 |
-40:59:15.3 |
HIP 97680 |
17.29 |
| 2026-09-27 00:00 |
19:52:39.61 |
-40:53:51.8 |
HIP 97890 |
14.63 |
| 2026-09-27 12:00 |
19:52:44.01 |
-40:48:27.8 |
HIP 97890 |
10.67 |
| 2026-09-28 00:00 |
19:52:48.81 |
-40:43:03.2 |
HIP 97890 |
8.49 |
| 2026-09-28 12:00 |
19:52:54.02 |
-40:37:38.2 |
HIP 97890 |
9.45 |
| 2026-09-29 00:00 |
19:52:59.63 |
-40:32:12.6 |
HIP 97874 |
10.66 |
| 2026-09-29 12:00 |
19:53:05.63 |
-40:26:46.6 |
HIP 97874 |
5.29 |
| 2026-09-30 00:00 |
19:53:12.04 |
-40:21:20.1 |
HIP 97874 |
1.92 |
| 2026-09-30 12:00 |
19:53:18.83 |
-40:15:53.1 |
HIP 97874 |
6.45 |
| 2026-10-01 00:00 |
19:53:26.02 |
-40:10:25.7 |
HIP 97874 |
11.95 |
| 2026-10-01 12:00 |
19:53:33.60 |
-40:04:57.9 |
HIP 97874 |
17.54 |
| 2026-10-02 00:00 |
19:53:41.57 |
-39:59:29.6 |
HIP 98033 |
18.41 |
| 2026-10-02 12:00 |
19:53:49.92 |
-39:54:01.0 |
HIP 98033 |
17.31 |
| 2026-10-03 00:00 |
19:53:58.66 |
-39:48:32.0 |
HIP 98033 |
17.97 |
| 2026-10-03 12:00 |
19:54:07.77 |
-39:43:02.6 |
HIP 98033 |
20.25 |
| 2026-10-04 00:00 |
19:54:17.27 |
-39:37:32.9 |
HIP 97986 |
14.54 |
| 2026-10-04 12:00 |
19:54:27.14 |
-39:32:02.8 |
HIP 97986 |
8.76 |
| 2026-10-05 00:00 |
19:54:37.39 |
-39:26:32.4 |
HIP 97986 |
3.07 |
| 2026-10-05 12:00 |
19:54:48.01 |
-39:21:01.6 |
HIP 97986 |
3.27 |
| 2026-10-06 00:00 |
19:54:59.00 |
-39:15:30.5 |
HIP 97986 |
9.03 |
| 2026-10-06 12:00 |
19:55:10.36 |
-39:09:59.2 |
HIP 97986 |
14.94 |
| 2026-10-07 00:00 |
19:55:22.09 |
-39:04:27.5 |
HIP 97986 |
20.89 |
| 2026-10-07 12:00 |
19:55:34.18 |
-38:58:55.6 |
HIP 97986 |
26.89 |
| 2026-10-08 00:00 |
19:55:46.63 |
-38:53:23.3 |
HIP 97986 |
32.91 |
| 2026-10-08 12:00 |
19:55:59.44 |
-38:47:50.9 |
HIP 98099 |
28.34 |
| 2026-10-09 00:00 |
19:56:12.60 |
-38:42:18.1 |
HIP 98099 |
22.72 |
| 2026-10-09 12:00 |
19:56:26.12 |
-38:36:45.1 |
HIP 98099 |
17.43 |
| 2026-10-10 00:00 |
19:56:40.00 |
-38:31:11.9 |
HIP 98099 |
12.96 |
| 2026-10-10 12:00 |
19:56:54.22 |
-38:25:38.5 |
HIP 98099 |
10.48 |
| 2026-10-11 00:00 |
19:57:08.78 |
-38:20:04.8 |
HIP 98099 |
11.42 |