367P/Catalina
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 |
0.973 |
| gb |
-0.509 |
| 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) |
| 2026-02-03 00:00 |
21:35:15.75 |
-21:09:07.1 |
HIP 106431 |
26.77 |
| 2026-02-03 12:00 |
21:36:00.61 |
-21:05:35.5 |
HIP 106729 |
16.29 |
| 2026-02-04 00:00 |
21:36:45.42 |
-21:02:03.7 |
HIP 106729 |
5.52 |
| 2026-02-04 12:00 |
21:37:30.19 |
-20:58:31.6 |
HIP 106729 |
6.25 |
| 2026-02-05 00:00 |
21:38:14.90 |
-20:54:59.3 |
HIP 106729 |
17.05 |
| 2026-02-05 12:00 |
21:38:59.57 |
-20:51:26.7 |
HIP 106729 |
28.02 |
| 2026-02-06 00:00 |
21:39:44.19 |
-20:47:53.9 |
HIP 106764 |
37.17 |
| 2026-02-06 12:00 |
21:40:28.76 |
-20:44:20.9 |
HIP 106764 |
44.41 |
| 2026-02-07 00:00 |
21:41:13.28 |
-20:40:47.7 |
HIP 106764 |
52.96 |
| 2026-02-07 12:00 |
21:41:57.75 |
-20:37:14.2 |
HIP 107111 |
48.93 |
| 2026-02-08 00:00 |
21:42:42.17 |
-20:33:40.5 |
HIP 107111 |
47.18 |
| 2026-02-08 12:00 |
21:43:26.54 |
-20:30:06.6 |
HIP 107111 |
47.95 |
| 2026-02-09 00:00 |
21:44:10.86 |
-20:26:32.5 |
HIP 107238 |
51.10 |
| 2026-02-09 12:00 |
21:44:55.13 |
-20:22:58.2 |
HIP 107238 |
51.58 |
| 2026-02-10 00:00 |
21:45:39.35 |
-20:19:23.8 |
HIP 107599 |
52.98 |
| 2026-02-10 12:00 |
21:46:23.52 |
-20:15:49.1 |
HIP 107599 |
44.92 |
| 2026-02-11 00:00 |
21:47:07.63 |
-20:12:14.3 |
HIP 107599 |
38.34 |
| 2026-02-11 12:00 |
21:47:51.70 |
-20:08:39.3 |
HIP 107748 |
33.39 |
| 2026-02-12 00:00 |
21:48:35.71 |
-20:05:04.1 |
HIP 107748 |
29.48 |
| 2026-02-12 12:00 |
21:49:19.66 |
-20:01:28.8 |
HIP 107845 |
24.76 |
| 2026-02-13 00:00 |
21:50:03.57 |
-19:57:53.3 |
HIP 107845 |
18.30 |
| 2026-02-13 12:00 |
21:50:47.41 |
-19:54:17.7 |
HIP 107845 |
17.17 |
| 2026-02-14 00:00 |
21:51:31.21 |
-19:50:41.9 |
HIP 107845 |
22.19 |
| 2026-02-14 12:00 |
21:52:14.95 |
-19:47:06.1 |
HIP 107989 |
16.86 |
| 2026-02-15 00:00 |
21:52:58.63 |
-19:43:30.0 |
HIP 107989 |
12.90 |
| 2026-02-15 12:00 |
21:53:42.26 |
-19:39:53.9 |
HIP 107989 |
16.91 |
| 2026-02-16 00:00 |
21:54:25.84 |
-19:36:17.7 |
HIP 108203 |
12.58 |
| 2026-02-16 12:00 |
21:55:09.35 |
-19:32:41.3 |
HIP 108203 |
6.05 |
| 2026-02-17 00:00 |
21:55:52.81 |
-19:29:04.9 |
HIP 108203 |
12.29 |
| 2026-02-17 12:00 |
21:56:36.22 |
-19:25:28.3 |
HIP 108352 |
15.58 |
| 2026-02-18 00:00 |
21:57:19.56 |
-19:21:51.7 |
HIP 108352 |
11.05 |
| 2026-02-18 12:00 |
21:58:02.85 |
-19:18:15.0 |
HIP 108352 |
15.38 |
| 2026-02-19 00:00 |
21:58:46.08 |
-19:14:38.3 |
HIP 108502 |
21.98 |
| 2026-02-19 12:00 |
21:59:29.24 |
-19:11:01.4 |
HIP 108708 |
26.05 |
| 2026-02-20 00:00 |
22:00:12.35 |
-19:07:24.5 |
HIP 108708 |
18.58 |
| 2026-02-20 12:00 |
22:00:55.40 |
-19:03:47.6 |
HIP 108739 |
10.59 |
| 2026-02-21 00:00 |
22:01:38.39 |
-19:00:10.6 |
HIP 108739 |
1.50 |
| 2026-02-21 12:00 |
22:02:21.32 |
-18:56:33.6 |
HIP 108739 |
11.17 |
| 2026-02-22 00:00 |
22:03:04.18 |
-18:52:56.6 |
HIP 108739 |
21.88 |
| 2026-02-22 12:00 |
22:03:46.98 |
-18:49:19.6 |
HIP 108999 |
21.68 |
| 2026-02-23 00:00 |
22:04:29.73 |
-18:45:42.5 |
HIP 109077 |
19.40 |
| 2026-02-23 12:00 |
22:05:12.40 |
-18:42:05.4 |
HIP 109077 |
8.70 |
| 2026-02-24 00:00 |
22:05:55.02 |
-18:38:28.3 |
HIP 109077 |
2.30 |