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) |
| 2026-06-01 00:00 |
23:56:38.51 |
-09:06:38.4 |
HIP 117977 |
13.67 |
| 2026-06-01 12:00 |
23:57:01.17 |
-09:05:04.3 |
HIP 117977 |
19.00 |
| 2026-06-02 00:00 |
23:57:23.65 |
-09:03:31.4 |
HIP 117977 |
24.50 |
| 2026-06-02 12:00 |
23:57:45.97 |
-09:01:59.9 |
HIP 118219 |
19.86 |
| 2026-06-03 00:00 |
23:58:08.12 |
-09:00:29.6 |
HIP 118219 |
14.84 |
| 2026-06-03 12:00 |
23:58:30.11 |
-08:59:00.6 |
HIP 118219 |
10.55 |
| 2026-06-04 00:00 |
23:58:51.93 |
-08:57:33.0 |
HIP 118219 |
8.13 |
| 2026-06-04 12:00 |
23:59:13.58 |
-08:56:06.6 |
HIP 118219 |
9.11 |
| 2026-06-05 00:00 |
23:59:35.05 |
-08:54:41.6 |
HIP 118219 |
12.66 |
| 2026-06-05 12:00 |
23:59:56.36 |
-08:53:17.9 |
HIP 118219 |
17.23 |
| 2026-06-06 00:00 |
00:00:17.49 |
-08:51:55.5 |
HIP 118219 |
22.16 |
| 2026-06-06 12:00 |
00:00:38.45 |
-08:50:34.5 |
HIP 118219 |
27.22 |
| 2026-06-07 00:00 |
00:00:59.23 |
-08:49:14.8 |
HIP 180 |
28.64 |
| 2026-06-07 12:00 |
00:01:19.84 |
-08:47:56.5 |
HIP 180 |
26.61 |
| 2026-06-08 00:00 |
00:01:40.27 |
-08:46:39.5 |
HIP 210 |
22.63 |
| 2026-06-08 12:00 |
00:02:00.52 |
-08:45:23.9 |
HIP 210 |
18.71 |
| 2026-06-09 00:00 |
00:02:20.60 |
-08:44:09.7 |
HIP 210 |
15.56 |
| 2026-06-09 12:00 |
00:02:40.49 |
-08:42:56.9 |
HIP 210 |
13.68 |
| 2026-06-10 00:00 |
00:03:00.20 |
-08:41:45.5 |
HIP 210 |
13.54 |
| 2026-06-10 12:00 |
00:03:19.72 |
-08:40:35.5 |
HIP 210 |
15.16 |
| 2026-06-11 00:00 |
00:03:39.06 |
-08:39:26.9 |
HIP 210 |
18.01 |
| 2026-06-11 12:00 |
00:03:58.22 |
-08:38:19.7 |
HIP 210 |
21.59 |
| 2026-06-12 00:00 |
00:04:17.19 |
-08:37:13.9 |
HIP 210 |
25.56 |
| 2026-06-12 12:00 |
00:04:35.97 |
-08:36:09.6 |
HIP 373 |
25.08 |
| 2026-06-13 00:00 |
00:04:54.56 |
-08:35:06.7 |
HIP 373 |
24.29 |
| 2026-06-13 12:00 |
00:05:12.96 |
-08:34:05.2 |
HIP 373 |
24.41 |
| 2026-06-14 00:00 |
00:05:31.17 |
-08:33:05.2 |
HIP 373 |
25.39 |
| 2026-06-14 12:00 |
00:05:49.18 |
-08:32:06.7 |
HIP 373 |
27.13 |
| 2026-06-15 00:00 |
00:06:07.00 |
-08:31:09.6 |
HIP 373 |
29.45 |
| 2026-06-15 12:00 |
00:06:24.63 |
-08:30:13.9 |
HIP 373 |
32.22 |
| 2026-06-16 00:00 |
00:06:42.05 |
-08:29:19.8 |
HIP 671 |
31.01 |
| 2026-06-16 12:00 |
00:06:59.29 |
-08:28:27.1 |
HIP 671 |
28.54 |
| 2026-06-17 00:00 |
00:07:16.32 |
-08:27:35.9 |
HIP 671 |
26.57 |
| 2026-06-17 12:00 |
00:07:33.15 |
-08:26:46.2 |
HIP 671 |
25.19 |
| 2026-06-18 00:00 |
00:07:49.78 |
-08:25:58.0 |
HIP 671 |
24.46 |
| 2026-06-18 12:00 |
00:08:06.21 |
-08:25:11.2 |
HIP 671 |
24.42 |
| 2026-06-19 00:00 |
00:08:22.44 |
-08:24:26.0 |
HIP 671 |
25.04 |
| 2026-06-19 12:00 |
00:08:38.46 |
-08:23:42.3 |
HIP 671 |
26.25 |
| 2026-06-20 00:00 |
00:08:54.28 |
-08:23:00.0 |
HIP 671 |
27.96 |
| 2026-06-20 12:00 |
00:09:09.89 |
-08:22:19.3 |
HIP 711 |
28.96 |
| 2026-06-21 00:00 |
00:09:25.29 |
-08:21:40.1 |
HIP 711 |
29.25 |
| 2026-06-21 12:00 |
00:09:40.49 |
-08:21:02.4 |
HIP 921 |
25.72 |
| 2026-06-22 00:00 |
00:09:55.48 |
-08:20:26.2 |
HIP 921 |
22.04 |