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) |
| 2026-09-20 00:00 |
20:30:13.73 |
-50:43:44.9 |
HIP 101169 |
8.51 |
| 2026-09-20 12:00 |
20:30:10.68 |
-50:43:31.2 |
HIP 101169 |
8.83 |
| 2026-09-21 00:00 |
20:30:07.68 |
-50:43:17.3 |
HIP 101169 |
9.17 |
| 2026-09-21 12:00 |
20:30:04.70 |
-50:43:03.3 |
HIP 101169 |
9.52 |
| 2026-09-22 00:00 |
20:30:01.76 |
-50:42:49.0 |
HIP 101169 |
9.90 |
| 2026-09-22 12:00 |
20:29:58.86 |
-50:42:34.6 |
HIP 101169 |
10.29 |
| 2026-09-23 00:00 |
20:29:55.98 |
-50:42:20.0 |
HIP 101169 |
10.69 |
| 2026-09-23 12:00 |
20:29:53.15 |
-50:42:05.2 |
HIP 101169 |
11.10 |
| 2026-09-24 00:00 |
20:29:50.34 |
-50:41:50.2 |
HIP 101169 |
11.52 |
| 2026-09-24 12:00 |
20:29:47.57 |
-50:41:35.0 |
HIP 101169 |
11.94 |
| 2026-09-25 00:00 |
20:29:44.84 |
-50:41:19.7 |
HIP 101169 |
12.37 |
| 2026-09-25 12:00 |
20:29:42.14 |
-50:41:04.2 |
HIP 101169 |
12.81 |
| 2026-09-26 00:00 |
20:29:39.47 |
-50:40:48.5 |
HIP 101169 |
13.25 |
| 2026-09-26 12:00 |
20:29:36.84 |
-50:40:32.6 |
HIP 101169 |
13.69 |
| 2026-09-27 00:00 |
20:29:34.25 |
-50:40:16.6 |
HIP 101169 |
14.14 |
| 2026-09-27 12:00 |
20:29:31.69 |
-50:40:00.4 |
HIP 101169 |
14.59 |
| 2026-09-28 00:00 |
20:29:29.17 |
-50:39:44.0 |
HIP 101169 |
15.04 |
| 2026-09-28 12:00 |
20:29:26.68 |
-50:39:27.4 |
HIP 101169 |
15.49 |
| 2026-09-29 00:00 |
20:29:24.23 |
-50:39:10.7 |
HIP 101169 |
15.94 |
| 2026-09-29 12:00 |
20:29:21.82 |
-50:38:53.8 |
HIP 101169 |
16.39 |
| 2026-09-30 00:00 |
20:29:19.44 |
-50:38:36.8 |
HIP 101169 |
16.85 |
| 2026-09-30 12:00 |
20:29:17.09 |
-50:38:19.6 |
HIP 101169 |
17.30 |
| 2026-10-01 00:00 |
20:29:14.79 |
-50:38:02.2 |
HIP 101169 |
17.75 |
| 2026-10-01 12:00 |
20:29:12.52 |
-50:37:44.7 |
HIP 101169 |
18.20 |
| 2026-10-02 00:00 |
20:29:10.29 |
-50:37:27.0 |
HIP 101169 |
18.65 |
| 2026-10-02 12:00 |
20:29:08.09 |
-50:37:09.1 |
HIP 101169 |
19.10 |
| 2026-10-03 00:00 |
20:29:05.94 |
-50:36:51.1 |
HIP 101169 |
19.55 |
| 2026-10-03 12:00 |
20:29:03.81 |
-50:36:32.9 |
HIP 101169 |
19.99 |
| 2026-10-04 00:00 |
20:29:01.73 |
-50:36:14.6 |
HIP 101169 |
20.44 |
| 2026-10-04 12:00 |
20:28:59.69 |
-50:35:56.2 |
HIP 101169 |
20.88 |
| 2026-10-05 00:00 |
20:28:57.68 |
-50:35:37.5 |
HIP 101169 |
21.32 |
| 2026-10-05 12:00 |
20:28:55.71 |
-50:35:18.8 |
HIP 101169 |
21.76 |
| 2026-10-06 00:00 |
20:28:53.78 |
-50:34:59.8 |
HIP 101169 |
22.20 |
| 2026-10-06 12:00 |
20:28:51.89 |
-50:34:40.8 |
HIP 101169 |
22.64 |
| 2026-10-07 00:00 |
20:28:50.03 |
-50:34:21.6 |
HIP 101169 |
23.07 |
| 2026-10-07 12:00 |
20:28:48.21 |
-50:34:02.2 |
HIP 101169 |
23.50 |
| 2026-10-08 00:00 |
20:28:46.44 |
-50:33:42.7 |
HIP 101169 |
23.94 |
| 2026-10-08 12:00 |
20:28:44.70 |
-50:33:23.1 |
HIP 101169 |
24.36 |
| 2026-10-09 00:00 |
20:28:43.00 |
-50:33:03.3 |
HIP 101169 |
24.79 |
| 2026-10-09 12:00 |
20:28:41.34 |
-50:32:43.4 |
HIP 101169 |
25.21 |
| 2026-10-10 00:00 |
20:28:39.72 |
-50:32:23.3 |
HIP 101169 |
25.64 |
| 2026-10-10 12:00 |
20:28:38.13 |
-50:32:03.1 |
HIP 101169 |
26.06 |
| 2026-10-11 00:00 |
20:28:36.59 |
-50:31:42.8 |
HIP 101169 |
26.47 |