メタデータ
| 項目 |
値 |
| Designation |
C/2010 L3 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-11-10T11:09:03.124800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:44Z |
| Obs used |
123 |
| NEO |
- |
| M1 |
4.700 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-12-11.0000000 |
| e |
0.99924162 |
| q (au) |
9.882907 |
| a (au) |
13031.539959 |
| i (deg) |
102.631072 |
| Ω (om, deg) |
38.275340 |
| ω (w, deg) |
121.773967 |
| M (ma, deg) |
0.000020 |
等級
散乱 + 全体線形
$$
M_a = (3.589 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
3.589 |
| n |
6.000 |
| gf |
0.905 |
| gb |
-0.799 |
| k |
0.807 |
| δ90 |
8.563 |
| 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) |
| 2026-03-26 00:00 |
11:42:55.51 |
-53:29:31.8 |
HIP 57238 |
18.92 |
| 2026-03-26 12:00 |
11:42:48.02 |
-53:29:14.5 |
HIP 57238 |
19.81 |
| 2026-03-27 00:00 |
11:42:40.54 |
-53:28:56.8 |
HIP 57238 |
20.74 |
| 2026-03-27 12:00 |
11:42:33.07 |
-53:28:38.6 |
HIP 57238 |
21.69 |
| 2026-03-28 00:00 |
11:42:25.62 |
-53:28:19.9 |
HIP 57238 |
22.66 |
| 2026-03-28 12:00 |
11:42:18.18 |
-53:28:00.8 |
HIP 57238 |
23.65 |
| 2026-03-29 00:00 |
11:42:10.75 |
-53:27:41.3 |
HIP 57238 |
24.66 |
| 2026-03-29 12:00 |
11:42:03.34 |
-53:27:21.3 |
HIP 57238 |
25.69 |
| 2026-03-30 00:00 |
11:41:55.95 |
-53:27:00.8 |
HIP 57238 |
26.73 |
| 2026-03-30 12:00 |
11:41:48.57 |
-53:26:40.0 |
HIP 57238 |
27.78 |
| 2026-03-31 00:00 |
11:41:41.20 |
-53:26:18.7 |
HIP 57238 |
28.84 |
| 2026-03-31 12:00 |
11:41:33.86 |
-53:25:56.9 |
HIP 57238 |
29.91 |
| 2026-04-01 00:00 |
11:41:26.53 |
-53:25:34.7 |
HIP 57238 |
30.99 |
| 2026-04-01 12:00 |
11:41:19.22 |
-53:25:12.1 |
HIP 57238 |
32.08 |
| 2026-04-02 00:00 |
11:41:11.93 |
-53:24:49.1 |
HIP 56707 |
32.26 |
| 2026-04-02 12:00 |
11:41:04.65 |
-53:24:25.6 |
HIP 56707 |
31.15 |
| 2026-04-03 00:00 |
11:40:57.40 |
-53:24:01.8 |
HIP 56707 |
30.04 |
| 2026-04-03 12:00 |
11:40:50.16 |
-53:23:37.5 |
HIP 56707 |
28.95 |
| 2026-04-04 00:00 |
11:40:42.95 |
-53:23:12.7 |
HIP 56707 |
27.86 |
| 2026-04-04 12:00 |
11:40:35.76 |
-53:22:47.6 |
HIP 56707 |
26.77 |
| 2026-04-05 00:00 |
11:40:28.59 |
-53:22:22.1 |
HIP 56707 |
25.70 |
| 2026-04-05 12:00 |
11:40:21.44 |
-53:21:56.1 |
HIP 56707 |
24.64 |
| 2026-04-06 00:00 |
11:40:14.32 |
-53:21:29.7 |
HIP 56707 |
23.58 |
| 2026-04-06 12:00 |
11:40:07.22 |
-53:21:03.0 |
HIP 56707 |
22.55 |
| 2026-04-07 00:00 |
11:40:00.14 |
-53:20:35.8 |
HIP 56707 |
21.52 |
| 2026-04-07 12:00 |
11:39:53.08 |
-53:20:08.2 |
HIP 56707 |
20.51 |
| 2026-04-08 00:00 |
11:39:46.06 |
-53:19:40.2 |
HIP 56707 |
19.53 |
| 2026-04-08 12:00 |
11:39:39.05 |
-53:19:11.9 |
HIP 56707 |
18.56 |
| 2026-04-09 00:00 |
11:39:32.07 |
-53:18:43.1 |
HIP 56707 |
17.62 |
| 2026-04-09 12:00 |
11:39:25.12 |
-53:18:14.0 |
HIP 56707 |
16.72 |
| 2026-04-10 00:00 |
11:39:18.20 |
-53:17:44.5 |
HIP 56707 |
15.85 |
| 2026-04-10 12:00 |
11:39:11.30 |
-53:17:14.6 |
HIP 56707 |
15.02 |
| 2026-04-11 00:00 |
11:39:04.43 |
-53:16:44.3 |
HIP 56707 |
14.24 |
| 2026-04-11 12:00 |
11:38:57.59 |
-53:16:13.6 |
HIP 56707 |
13.52 |
| 2026-04-12 00:00 |
11:38:50.78 |
-53:15:42.6 |
HIP 56707 |
12.86 |
| 2026-04-12 12:00 |
11:38:44.00 |
-53:15:11.2 |
HIP 56707 |
12.29 |
| 2026-04-13 00:00 |
11:38:37.24 |
-53:14:39.4 |
HIP 56707 |
11.80 |
| 2026-04-13 12:00 |
11:38:30.52 |
-53:14:07.3 |
HIP 56707 |
11.42 |
| 2026-04-14 00:00 |
11:38:23.83 |
-53:13:34.8 |
HIP 56707 |
11.15 |
| 2026-04-14 12:00 |
11:38:17.17 |
-53:13:02.0 |
HIP 56707 |
10.99 |
| 2026-04-15 00:00 |
11:38:10.54 |
-53:12:28.8 |
HIP 56707 |
10.96 |
| 2026-04-15 12:00 |
11:38:03.94 |
-53:11:55.2 |
HIP 56707 |
11.05 |
| 2026-04-16 00:00 |
11:37:57.38 |
-53:11:21.3 |
HIP 56707 |
11.26 |