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) |
| 2026-03-26 00:00 |
20:21:48.70 |
-43:22:08.4 |
HIP 100331 |
17.67 |
| 2026-03-26 12:00 |
20:22:25.11 |
-43:22:01.0 |
HIP 100528 |
19.42 |
| 2026-03-27 00:00 |
20:23:01.38 |
-43:21:54.2 |
HIP 100528 |
18.33 |
| 2026-03-27 12:00 |
20:23:37.50 |
-43:21:48.1 |
HIP 100659 |
17.05 |
| 2026-03-28 00:00 |
20:24:13.46 |
-43:21:42.6 |
HIP 100659 |
13.85 |
| 2026-03-28 12:00 |
20:24:49.28 |
-43:21:37.8 |
HIP 100659 |
13.37 |
| 2026-03-29 00:00 |
20:25:24.94 |
-43:21:33.7 |
HIP 100659 |
15.82 |
| 2026-03-29 12:00 |
20:26:00.44 |
-43:21:30.2 |
HIP 100836 |
14.77 |
| 2026-03-30 00:00 |
20:26:35.79 |
-43:21:27.4 |
HIP 100836 |
12.58 |
| 2026-03-30 12:00 |
20:27:10.98 |
-43:21:25.3 |
HIP 100836 |
13.42 |
| 2026-03-31 00:00 |
20:27:46.02 |
-43:21:23.9 |
HIP 100836 |
16.80 |
| 2026-03-31 12:00 |
20:28:20.89 |
-43:21:23.2 |
HIP 100836 |
21.55 |
| 2026-04-01 00:00 |
20:28:55.61 |
-43:21:23.2 |
HIP 101083 |
25.65 |
| 2026-04-01 12:00 |
20:29:30.16 |
-43:21:24.0 |
HIP 101083 |
25.02 |
| 2026-04-02 00:00 |
20:30:04.56 |
-43:21:25.5 |
HIP 101083 |
25.96 |
| 2026-04-02 12:00 |
20:30:38.79 |
-43:21:27.7 |
HIP 101334 |
23.26 |
| 2026-04-03 00:00 |
20:31:12.85 |
-43:21:30.6 |
HIP 101334 |
18.90 |
| 2026-04-03 12:00 |
20:31:46.75 |
-43:21:34.4 |
HIP 101415 |
14.94 |
| 2026-04-04 00:00 |
20:32:20.48 |
-43:21:38.8 |
HIP 101415 |
8.92 |
| 2026-04-04 12:00 |
20:32:54.05 |
-43:21:44.1 |
HIP 101415 |
3.39 |
| 2026-04-05 00:00 |
20:33:27.44 |
-43:21:50.1 |
HIP 101415 |
4.20 |
| 2026-04-05 12:00 |
20:34:00.66 |
-43:21:57.0 |
HIP 101515 |
5.69 |
| 2026-04-06 00:00 |
20:34:33.71 |
-43:22:04.6 |
HIP 101515 |
5.71 |
| 2026-04-06 12:00 |
20:35:06.59 |
-43:22:13.0 |
HIP 101515 |
10.21 |
| 2026-04-07 00:00 |
20:35:39.29 |
-43:22:22.3 |
HIP 101515 |
15.69 |
| 2026-04-07 12:00 |
20:36:11.82 |
-43:22:32.3 |
HIP 101515 |
21.38 |
| 2026-04-08 00:00 |
20:36:44.17 |
-43:22:43.3 |
HIP 101758 |
21.49 |
| 2026-04-08 12:00 |
20:37:16.33 |
-43:22:55.0 |
HIP 101758 |
20.40 |
| 2026-04-09 00:00 |
20:37:48.32 |
-43:23:07.6 |
HIP 101758 |
20.96 |
| 2026-04-09 12:00 |
20:38:20.13 |
-43:23:21.1 |
HIP 101880 |
20.88 |
| 2026-04-10 00:00 |
20:38:51.75 |
-43:23:35.4 |
HIP 101977 |
17.46 |
| 2026-04-10 12:00 |
20:39:23.18 |
-43:23:50.6 |
HIP 101977 |
13.98 |
| 2026-04-11 00:00 |
20:39:54.43 |
-43:24:06.7 |
HIP 101977 |
12.28 |
| 2026-04-11 12:00 |
20:40:25.49 |
-43:24:23.7 |
HIP 101977 |
13.03 |
| 2026-04-12 00:00 |
20:40:56.36 |
-43:24:41.6 |
HIP 101977 |
15.85 |
| 2026-04-12 12:00 |
20:41:27.03 |
-43:25:00.4 |
HIP 101977 |
19.85 |
| 2026-04-13 00:00 |
20:41:57.52 |
-43:25:20.1 |
HIP 102260 |
15.45 |
| 2026-04-13 12:00 |
20:42:27.81 |
-43:25:40.7 |
HIP 102260 |
10.98 |
| 2026-04-14 00:00 |
20:42:57.90 |
-43:26:02.3 |
HIP 102260 |
7.99 |
| 2026-04-14 12:00 |
20:43:27.79 |
-43:26:24.8 |
HIP 102260 |
8.20 |
| 2026-04-15 00:00 |
20:43:57.48 |
-43:26:48.3 |
HIP 102260 |
11.38 |
| 2026-04-15 12:00 |
20:44:26.97 |
-43:27:12.7 |
HIP 102403 |
7.20 |
| 2026-04-16 00:00 |
20:44:56.26 |
-43:27:38.1 |
HIP 102403 |
1.98 |