メタデータ
| 項目 |
値 |
| Designation |
223P/Skiff |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-08-14T12:28:20.533440Z |
| Orbit solution date (soln_date, UTC) |
2023-01-14T00:13:32Z |
| Obs used |
776 |
| 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) |
2011-09-02.0000000 |
| e |
0.41643283 |
| q (au) |
2.420478 |
| a (au) |
4.147728 |
| i (deg) |
27.054381 |
| Ω (om, deg) |
346.824301 |
| ω (w, deg) |
37.861800 |
| M (ma, deg) |
44.743681 |
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) |
| 2026-05-12 00:00 |
21:04:58.32 |
-44:13:44.7 |
HIP 104024 |
14.78 |
| 2026-05-12 12:00 |
21:05:14.42 |
-44:15:07.4 |
HIP 104024 |
14.76 |
| 2026-05-13 00:00 |
21:05:30.21 |
-44:16:31.2 |
HIP 104024 |
15.37 |
| 2026-05-13 12:00 |
21:05:45.70 |
-44:17:56.2 |
HIP 104024 |
16.51 |
| 2026-05-14 00:00 |
21:06:00.89 |
-44:19:22.4 |
HIP 104286 |
17.39 |
| 2026-05-14 12:00 |
21:06:15.76 |
-44:20:49.6 |
HIP 104286 |
15.00 |
| 2026-05-15 00:00 |
21:06:30.32 |
-44:22:18.0 |
HIP 104286 |
12.94 |
| 2026-05-15 12:00 |
21:06:44.57 |
-44:23:47.5 |
HIP 104286 |
11.36 |
| 2026-05-16 00:00 |
21:06:58.50 |
-44:25:18.2 |
HIP 104286 |
10.46 |
| 2026-05-16 12:00 |
21:07:12.11 |
-44:26:49.9 |
HIP 104286 |
10.37 |
| 2026-05-17 00:00 |
21:07:25.40 |
-44:28:22.8 |
HIP 104286 |
11.09 |
| 2026-05-17 12:00 |
21:07:38.37 |
-44:29:56.7 |
HIP 104286 |
12.44 |
| 2026-05-18 00:00 |
21:07:51.01 |
-44:31:31.8 |
HIP 104286 |
14.23 |
| 2026-05-18 12:00 |
21:08:03.33 |
-44:33:07.9 |
HIP 104286 |
16.29 |
| 2026-05-19 00:00 |
21:08:15.31 |
-44:34:45.1 |
HIP 104473 |
18.02 |
| 2026-05-19 12:00 |
21:08:26.97 |
-44:36:23.4 |
HIP 104473 |
16.91 |
| 2026-05-20 00:00 |
21:08:38.29 |
-44:38:02.7 |
HIP 104473 |
16.22 |
| 2026-05-20 12:00 |
21:08:49.28 |
-44:39:43.1 |
HIP 104473 |
15.98 |
| 2026-05-21 00:00 |
21:08:59.93 |
-44:41:24.5 |
HIP 104473 |
16.21 |
| 2026-05-21 12:00 |
21:09:10.24 |
-44:43:06.9 |
HIP 104473 |
16.86 |
| 2026-05-22 00:00 |
21:09:20.21 |
-44:44:50.4 |
HIP 104403 |
16.20 |
| 2026-05-22 12:00 |
21:09:29.84 |
-44:46:34.8 |
HIP 104403 |
14.98 |
| 2026-05-23 00:00 |
21:09:39.12 |
-44:48:20.3 |
HIP 104403 |
14.02 |
| 2026-05-23 12:00 |
21:09:48.06 |
-44:50:06.7 |
HIP 104403 |
13.39 |
| 2026-05-24 00:00 |
21:09:56.65 |
-44:51:54.1 |
HIP 104403 |
13.10 |
| 2026-05-24 12:00 |
21:10:04.89 |
-44:53:42.4 |
HIP 104403 |
13.17 |
| 2026-05-25 00:00 |
21:10:12.78 |
-44:55:31.7 |
HIP 104403 |
13.58 |
| 2026-05-25 12:00 |
21:10:20.31 |
-44:57:22.0 |
HIP 104613 |
14.21 |
| 2026-05-26 00:00 |
21:10:27.49 |
-44:59:13.2 |
HIP 104613 |
12.22 |
| 2026-05-26 12:00 |
21:10:34.31 |
-45:01:05.2 |
HIP 104613 |
10.39 |
| 2026-05-27 00:00 |
21:10:40.77 |
-45:02:58.2 |
HIP 104613 |
8.81 |
| 2026-05-27 12:00 |
21:10:46.86 |
-45:04:52.1 |
HIP 104613 |
7.62 |
| 2026-05-28 00:00 |
21:10:52.60 |
-45:06:46.8 |
HIP 104613 |
6.99 |
| 2026-05-28 12:00 |
21:10:57.97 |
-45:08:42.4 |
HIP 104613 |
7.06 |
| 2026-05-29 00:00 |
21:11:02.97 |
-45:10:38.8 |
HIP 104613 |
7.81 |
| 2026-05-29 12:00 |
21:11:07.60 |
-45:12:36.1 |
HIP 104613 |
9.05 |
| 2026-05-30 00:00 |
21:11:11.85 |
-45:14:34.2 |
HIP 104613 |
10.60 |
| 2026-05-30 12:00 |
21:11:15.74 |
-45:16:33.0 |
HIP 104613 |
12.35 |
| 2026-05-31 00:00 |
21:11:19.25 |
-45:18:32.7 |
HIP 104613 |
14.21 |
| 2026-05-31 12:00 |
21:11:22.38 |
-45:20:33.1 |
HIP 104613 |
16.15 |
| 2026-06-01 00:00 |
21:11:25.13 |
-45:22:34.3 |
HIP 104613 |
18.13 |
| 2026-06-01 12:00 |
21:11:27.49 |
-45:24:36.2 |
HIP 104613 |
20.15 |
| 2026-06-02 00:00 |
21:11:29.48 |
-45:26:38.8 |
HIP 104613 |
22.19 |