メタデータ
| 項目 |
値 |
| Designation |
C/2006 CK10 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-07-03T06:42:20.756160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:56Z |
| Obs used |
321 |
| NEO |
- |
| M1 |
15.100 |
| 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) |
2006-05-25.0000000 |
| e |
0.99190031 |
| q (au) |
1.752169 |
| a (au) |
216.325607 |
| i (deg) |
144.262762 |
| Ω (om, deg) |
243.809967 |
| ω (w, deg) |
143.456329 |
| M (ma, deg) |
359.987832 |
等級
散乱 + 全体線形
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
20:37:49.09 |
-50:47:21.0 |
HIP 101833 |
10.62 |
| 2026-07-29 12:00 |
20:37:44.17 |
-50:47:31.0 |
HIP 101833 |
11.07 |
| 2026-07-30 00:00 |
20:37:39.25 |
-50:47:40.7 |
HIP 101833 |
11.54 |
| 2026-07-30 12:00 |
20:37:34.33 |
-50:47:50.2 |
HIP 101833 |
12.05 |
| 2026-07-31 00:00 |
20:37:29.41 |
-50:47:59.5 |
HIP 101833 |
12.58 |
| 2026-07-31 12:00 |
20:37:24.49 |
-50:48:08.5 |
HIP 101833 |
13.14 |
| 2026-08-01 00:00 |
20:37:19.57 |
-50:48:17.3 |
HIP 101833 |
13.72 |
| 2026-08-01 12:00 |
20:37:14.65 |
-50:48:26.0 |
HIP 101833 |
14.31 |
| 2026-08-02 00:00 |
20:37:09.73 |
-50:48:34.3 |
HIP 101833 |
14.92 |
| 2026-08-02 12:00 |
20:37:04.82 |
-50:48:42.5 |
HIP 101833 |
15.54 |
| 2026-08-03 00:00 |
20:36:59.91 |
-50:48:50.4 |
HIP 101833 |
16.18 |
| 2026-08-03 12:00 |
20:36:55.00 |
-50:48:58.1 |
HIP 101833 |
16.82 |
| 2026-08-04 00:00 |
20:36:50.09 |
-50:49:05.6 |
HIP 101833 |
17.48 |
| 2026-08-04 12:00 |
20:36:45.19 |
-50:49:12.9 |
HIP 101833 |
18.14 |
| 2026-08-05 00:00 |
20:36:40.29 |
-50:49:19.9 |
HIP 101833 |
18.81 |
| 2026-08-05 12:00 |
20:36:35.39 |
-50:49:26.7 |
HIP 101833 |
19.48 |
| 2026-08-06 00:00 |
20:36:30.50 |
-50:49:33.3 |
HIP 101833 |
20.16 |
| 2026-08-06 12:00 |
20:36:25.62 |
-50:49:39.6 |
HIP 101833 |
20.84 |
| 2026-08-07 00:00 |
20:36:20.74 |
-50:49:45.8 |
HIP 101833 |
21.53 |
| 2026-08-07 12:00 |
20:36:15.86 |
-50:49:51.6 |
HIP 101574 |
21.84 |
| 2026-08-08 00:00 |
20:36:10.99 |
-50:49:57.3 |
HIP 101574 |
21.39 |
| 2026-08-08 12:00 |
20:36:06.13 |
-50:50:02.7 |
HIP 101574 |
20.96 |
| 2026-08-09 00:00 |
20:36:01.27 |
-50:50:07.9 |
HIP 101574 |
20.56 |
| 2026-08-09 12:00 |
20:35:56.43 |
-50:50:12.9 |
HIP 101574 |
20.18 |
| 2026-08-10 00:00 |
20:35:51.58 |
-50:50:17.6 |
HIP 101574 |
19.83 |
| 2026-08-10 12:00 |
20:35:46.75 |
-50:50:22.1 |
HIP 101574 |
19.50 |
| 2026-08-11 00:00 |
20:35:41.93 |
-50:50:26.3 |
HIP 101574 |
19.21 |
| 2026-08-11 12:00 |
20:35:37.11 |
-50:50:30.4 |
HIP 101574 |
18.94 |
| 2026-08-12 00:00 |
20:35:32.30 |
-50:50:34.2 |
HIP 101574 |
18.71 |
| 2026-08-12 12:00 |
20:35:27.51 |
-50:50:37.7 |
HIP 101574 |
18.51 |
| 2026-08-13 00:00 |
20:35:22.72 |
-50:50:41.0 |
HIP 101574 |
18.34 |
| 2026-08-13 12:00 |
20:35:17.94 |
-50:50:44.1 |
HIP 101574 |
18.21 |
| 2026-08-14 00:00 |
20:35:13.18 |
-50:50:47.0 |
HIP 101574 |
18.11 |
| 2026-08-14 12:00 |
20:35:08.42 |
-50:50:49.6 |
HIP 101574 |
18.04 |
| 2026-08-15 00:00 |
20:35:03.68 |
-50:50:52.0 |
HIP 101574 |
18.01 |
| 2026-08-15 12:00 |
20:34:58.94 |
-50:50:54.1 |
HIP 101574 |
18.02 |
| 2026-08-16 00:00 |
20:34:54.22 |
-50:50:56.0 |
HIP 101574 |
18.05 |
| 2026-08-16 12:00 |
20:34:49.52 |
-50:50:57.7 |
HIP 101574 |
18.13 |
| 2026-08-17 00:00 |
20:34:44.82 |
-50:50:59.1 |
HIP 101574 |
18.23 |
| 2026-08-17 12:00 |
20:34:40.14 |
-50:51:00.3 |
HIP 101574 |
18.37 |
| 2026-08-18 00:00 |
20:34:35.47 |
-50:51:01.3 |
HIP 101574 |
18.54 |
| 2026-08-18 12:00 |
20:34:30.82 |
-50:51:02.0 |
HIP 101574 |
18.74 |
| 2026-08-19 00:00 |
20:34:26.18 |
-50:51:02.5 |
HIP 101574 |
18.97 |