メタデータ
| 項目 |
値 |
| Designation |
346P/Catalina |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-08-20T20:43:06.847680Z |
| Orbit solution date (soln_date, UTC) |
2025-09-09T12:42:55Z |
| Obs used |
553 |
| NEO |
- |
| M1 |
12.400 |
| K1 |
12.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-10-21.0000000 |
| e |
0.50406176 |
| q (au) |
2.222599 |
| a (au) |
4.481605 |
| i (deg) |
22.172168 |
| Ω (om, deg) |
102.556632 |
| ω (w, deg) |
335.762986 |
| M (ma, deg) |
158.127468 |
等級
散乱 + 全体線形
$$
M_a = (15.872 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.872 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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) |
| 2026-06-01 00:00 |
04:09:39.89 |
+09:50:58.0 |
HIP 19348 |
20.67 |
| 2026-06-01 12:00 |
04:10:42.08 |
+09:55:51.2 |
HIP 19348 |
31.22 |
| 2026-06-02 00:00 |
04:11:44.33 |
+10:00:43.0 |
HIP 19720 |
29.68 |
| 2026-06-02 12:00 |
04:12:46.63 |
+10:05:33.5 |
HIP 19720 |
13.81 |
| 2026-06-03 00:00 |
04:13:48.99 |
+10:10:22.7 |
HIP 19720 |
4.27 |
| 2026-06-03 12:00 |
04:14:51.41 |
+10:15:10.5 |
HIP 19799 |
14.96 |
| 2026-06-04 00:00 |
04:15:53.87 |
+10:19:56.9 |
HIP 19799 |
27.13 |
| 2026-06-04 12:00 |
04:16:56.40 |
+10:24:42.0 |
HIP 20135 |
34.33 |
| 2026-06-05 00:00 |
04:17:58.97 |
+10:29:25.7 |
HIP 20135 |
25.30 |
| 2026-06-05 12:00 |
04:19:01.60 |
+10:34:08.0 |
HIP 20216 |
13.43 |
| 2026-06-06 00:00 |
04:20:04.29 |
+10:38:49.0 |
HIP 20216 |
2.86 |
| 2026-06-06 12:00 |
04:21:07.02 |
+10:43:28.5 |
HIP 20366 |
8.97 |
| 2026-06-07 00:00 |
04:22:09.81 |
+10:48:06.7 |
HIP 20366 |
7.14 |
| 2026-06-07 12:00 |
04:23:12.65 |
+10:52:43.5 |
HIP 20481 |
4.28 |
| 2026-06-08 00:00 |
04:24:15.54 |
+10:57:18.9 |
HIP 20481 |
15.31 |
| 2026-06-08 12:00 |
04:25:18.49 |
+11:01:52.9 |
HIP 20751 |
24.03 |
| 2026-06-09 00:00 |
04:26:21.48 |
+11:06:25.5 |
HIP 20751 |
15.60 |
| 2026-06-09 12:00 |
04:27:24.53 |
+11:10:56.7 |
HIP 20804 |
2.08 |
| 2026-06-10 00:00 |
04:28:27.62 |
+11:15:26.4 |
HIP 20804 |
14.68 |
| 2026-06-10 12:00 |
04:29:30.76 |
+11:19:54.7 |
HIP 21091 |
25.14 |
| 2026-06-11 00:00 |
04:30:33.95 |
+11:24:21.6 |
HIP 21091 |
13.29 |
| 2026-06-11 12:00 |
04:31:37.19 |
+11:28:47.1 |
HIP 21091 |
15.51 |
| 2026-06-12 00:00 |
04:32:40.48 |
+11:33:11.1 |
HIP 21091 |
28.70 |
| 2026-06-12 12:00 |
04:33:43.81 |
+11:37:33.7 |
HIP 21335 |
16.50 |
| 2026-06-13 00:00 |
04:34:47.19 |
+11:41:54.8 |
HIP 21335 |
11.98 |
| 2026-06-13 12:00 |
04:35:50.62 |
+11:46:14.5 |
HIP 21475 |
15.01 |
| 2026-06-14 00:00 |
04:36:54.09 |
+11:50:32.7 |
HIP 21475 |
5.25 |
| 2026-06-14 12:00 |
04:37:57.60 |
+11:54:49.5 |
HIP 21650 |
15.15 |
| 2026-06-15 00:00 |
04:39:01.16 |
+11:59:04.8 |
HIP 21650 |
1.46 |
| 2026-06-15 12:00 |
04:40:04.76 |
+12:03:18.6 |
HIP 21735 |
8.55 |
| 2026-06-16 00:00 |
04:41:08.39 |
+12:07:31.0 |
HIP 21735 |
16.46 |
| 2026-06-16 12:00 |
04:42:12.07 |
+12:11:41.8 |
HIP 21918 |
9.02 |
| 2026-06-17 00:00 |
04:43:15.79 |
+12:15:51.2 |
HIP 21980 |
5.55 |
| 2026-06-17 12:00 |
04:44:19.55 |
+12:19:59.2 |
HIP 21980 |
11.96 |
| 2026-06-18 00:00 |
04:45:23.35 |
+12:24:05.6 |
HIP 22012 |
27.76 |
| 2026-06-18 12:00 |
04:46:27.19 |
+12:28:10.5 |
HIP 22012 |
39.66 |
| 2026-06-19 00:00 |
04:47:31.06 |
+12:32:14.0 |
HIP 22327 |
27.80 |
| 2026-06-19 12:00 |
04:48:34.97 |
+12:36:16.0 |
HIP 22327 |
19.27 |
| 2026-06-20 00:00 |
04:49:38.91 |
+12:40:16.4 |
HIP 22462 |
10.63 |
| 2026-06-20 12:00 |
04:50:42.89 |
+12:44:15.4 |
HIP 22583 |
13.47 |
| 2026-06-21 00:00 |
04:51:46.90 |
+12:48:12.9 |
HIP 22583 |
2.64 |
| 2026-06-21 12:00 |
04:52:50.95 |
+12:52:08.9 |
HIP 22753 |
12.01 |
| 2026-06-22 00:00 |
04:53:55.03 |
+12:56:03.4 |
HIP 22753 |
4.15 |