メタデータ
| 項目 |
値 |
| Designation |
367P/Catalina |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-11-29T20:09:13.155840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:37Z |
| Obs used |
129 |
| NEO |
- |
| M1 |
14.300 |
| 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) |
2012-04-12.0000000 |
| e |
0.27988242 |
| q (au) |
2.528309 |
| a (au) |
3.510967 |
| i (deg) |
8.459533 |
| Ω (om, deg) |
58.741477 |
| ω (w, deg) |
173.479131 |
| M (ma, deg) |
20.099623 |
等級
散乱 + 全体線形
$$
M_a = (17.113 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
17.113 |
| n |
2.000 |
| gf |
0.974 |
| gb |
-0.508 |
| k |
1.000 |
| δ90 |
9.568 |
| 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) |
| 2026-07-29 00:00 |
00:17:35.23 |
-08:48:20.5 |
HIP 1412 |
7.53 |
| 2026-07-29 12:00 |
00:17:31.89 |
-08:49:40.7 |
HIP 1412 |
9.01 |
| 2026-07-30 00:00 |
00:17:28.29 |
-08:51:02.2 |
HIP 1412 |
10.56 |
| 2026-07-30 12:00 |
00:17:24.42 |
-08:52:25.1 |
HIP 1412 |
12.17 |
| 2026-07-31 00:00 |
00:17:20.29 |
-08:53:49.4 |
HIP 1412 |
13.84 |
| 2026-07-31 12:00 |
00:17:15.89 |
-08:55:15.0 |
HIP 1412 |
15.57 |
| 2026-08-01 00:00 |
00:17:11.23 |
-08:56:42.0 |
HIP 1412 |
17.36 |
| 2026-08-01 12:00 |
00:17:06.31 |
-08:58:10.2 |
HIP 1412 |
19.22 |
| 2026-08-02 00:00 |
00:17:01.12 |
-08:59:39.8 |
HIP 1266 |
18.52 |
| 2026-08-02 12:00 |
00:16:55.67 |
-09:01:10.7 |
HIP 1266 |
17.96 |
| 2026-08-03 00:00 |
00:16:49.95 |
-09:02:42.9 |
HIP 1266 |
17.57 |
| 2026-08-03 12:00 |
00:16:43.97 |
-09:04:16.4 |
HIP 1266 |
17.39 |
| 2026-08-04 00:00 |
00:16:37.73 |
-09:05:51.1 |
HIP 1266 |
17.45 |
| 2026-08-04 12:00 |
00:16:31.22 |
-09:07:27.0 |
HIP 1266 |
17.77 |
| 2026-08-05 00:00 |
00:16:24.45 |
-09:09:04.2 |
HIP 1266 |
18.35 |
| 2026-08-05 12:00 |
00:16:17.42 |
-09:10:42.7 |
HIP 1274 |
18.57 |
| 2026-08-06 00:00 |
00:16:10.13 |
-09:12:22.3 |
HIP 1274 |
16.59 |
| 2026-08-06 12:00 |
00:16:02.58 |
-09:14:03.1 |
HIP 1274 |
14.73 |
| 2026-08-07 00:00 |
00:15:54.76 |
-09:15:45.1 |
HIP 1274 |
13.08 |
| 2026-08-07 12:00 |
00:15:46.69 |
-09:17:28.3 |
HIP 1274 |
11.75 |
| 2026-08-08 00:00 |
00:15:38.36 |
-09:19:12.6 |
HIP 1274 |
10.93 |
| 2026-08-08 12:00 |
00:15:29.77 |
-09:20:58.0 |
HIP 1274 |
10.77 |
| 2026-08-09 00:00 |
00:15:20.92 |
-09:22:44.5 |
HIP 1274 |
11.33 |
| 2026-08-09 12:00 |
00:15:11.82 |
-09:24:32.1 |
HIP 1191 |
10.54 |
| 2026-08-10 00:00 |
00:15:02.46 |
-09:26:20.8 |
HIP 1191 |
8.07 |
| 2026-08-10 12:00 |
00:14:52.84 |
-09:28:10.5 |
HIP 1191 |
6.01 |
| 2026-08-11 00:00 |
00:14:42.98 |
-09:30:01.2 |
HIP 1191 |
5.03 |
| 2026-08-11 12:00 |
00:14:32.86 |
-09:31:52.9 |
HIP 1191 |
5.81 |
| 2026-08-12 00:00 |
00:14:22.49 |
-09:33:45.7 |
HIP 1191 |
7.90 |
| 2026-08-12 12:00 |
00:14:11.87 |
-09:35:39.3 |
HIP 1117 |
9.72 |
| 2026-08-13 00:00 |
00:14:01.01 |
-09:37:33.9 |
HIP 1117 |
7.09 |
| 2026-08-13 12:00 |
00:13:49.90 |
-09:39:29.4 |
HIP 1117 |
5.28 |
| 2026-08-14 00:00 |
00:13:38.54 |
-09:41:25.8 |
HIP 1117 |
5.31 |
| 2026-08-14 12:00 |
00:13:26.95 |
-09:43:23.1 |
HIP 1117 |
7.25 |
| 2026-08-15 00:00 |
00:13:15.11 |
-09:45:21.2 |
HIP 1117 |
10.10 |
| 2026-08-15 12:00 |
00:13:03.03 |
-09:47:20.1 |
HIP 1117 |
13.34 |
| 2026-08-16 00:00 |
00:12:50.72 |
-09:49:19.8 |
HIP 1117 |
16.77 |
| 2026-08-16 12:00 |
00:12:38.18 |
-09:51:20.2 |
HIP 947 |
16.86 |
| 2026-08-17 00:00 |
00:12:25.40 |
-09:53:21.4 |
HIP 947 |
15.69 |
| 2026-08-17 12:00 |
00:12:12.39 |
-09:55:23.3 |
HIP 947 |
15.35 |
| 2026-08-18 00:00 |
00:11:59.16 |
-09:57:25.9 |
HIP 947 |
15.92 |
| 2026-08-18 12:00 |
00:11:45.69 |
-09:59:29.1 |
HIP 947 |
17.36 |
| 2026-08-19 00:00 |
00:11:32.01 |
-10:01:32.9 |
HIP 947 |
19.50 |