304P/Ory
メタデータ
| 項目 |
値 |
| Designation |
304P/Ory |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-10-19T17:18:25.943040Z |
| Orbit solution date (soln_date, UTC) |
2022-05-19T21:14:15Z |
| Obs used |
1496 |
| NEO |
- |
| M1 |
15.100 |
| K1 |
14.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-07-30.0000000 |
| e |
0.57417592 |
| q (au) |
1.381374 |
| a (au) |
3.244002 |
| i (deg) |
2.755646 |
| Ω (om, deg) |
60.682083 |
| ω (w, deg) |
329.661369 |
| M (ma, deg) |
170.927265 |
等級
散乱 + 全体線形
$$
M_a = (13.926 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.926 |
| n |
6.000 |
| 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) |
| 2026-02-03 00:00 |
22:46:30.51 |
-09:18:56.1 |
HIP 112425 |
23.14 |
| 2026-02-03 12:00 |
22:48:03.01 |
-09:09:10.3 |
HIP 112572 |
16.35 |
| 2026-02-04 00:00 |
22:49:35.64 |
-08:59:21.9 |
HIP 112656 |
12.43 |
| 2026-02-04 12:00 |
22:51:08.40 |
-08:49:30.8 |
HIP 112899 |
18.48 |
| 2026-02-05 00:00 |
22:52:41.28 |
-08:39:37.1 |
HIP 112899 |
14.97 |
| 2026-02-05 12:00 |
22:54:14.28 |
-08:29:40.8 |
HIP 113122 |
9.50 |
| 2026-02-06 00:00 |
22:55:47.41 |
-08:19:41.9 |
HIP 113153 |
14.98 |
| 2026-02-06 12:00 |
22:57:20.67 |
-08:09:40.5 |
HIP 113488 |
24.69 |
| 2026-02-07 00:00 |
22:58:54.05 |
-07:59:36.7 |
HIP 113488 |
13.26 |
| 2026-02-07 12:00 |
23:00:27.55 |
-07:49:30.3 |
HIP 113748 |
26.37 |
| 2026-02-08 00:00 |
23:02:01.18 |
-07:39:21.4 |
HIP 113748 |
4.80 |
| 2026-02-08 12:00 |
23:03:34.94 |
-07:29:10.2 |
HIP 113805 |
23.66 |
| 2026-02-09 00:00 |
23:05:08.81 |
-07:18:56.5 |
HIP 113996 |
22.69 |
| 2026-02-09 12:00 |
23:06:42.82 |
-07:08:40.5 |
HIP 114257 |
25.89 |
| 2026-02-10 00:00 |
23:08:16.94 |
-06:58:22.1 |
HIP 114257 |
17.71 |
| 2026-02-10 12:00 |
23:09:51.19 |
-06:48:01.4 |
HIP 114370 |
17.39 |
| 2026-02-11 00:00 |
23:11:25.57 |
-06:37:38.5 |
HIP 114595 |
29.25 |
| 2026-02-11 12:00 |
23:13:00.07 |
-06:27:13.3 |
HIP 114595 |
29.91 |
| 2026-02-12 00:00 |
23:14:34.69 |
-06:16:45.8 |
HIP 114795 |
13.41 |
| 2026-02-12 12:00 |
23:16:09.44 |
-06:06:16.2 |
HIP 114795 |
14.08 |
| 2026-02-13 00:00 |
23:17:44.31 |
-05:55:44.5 |
HIP 114960 |
24.80 |
| 2026-02-13 12:00 |
23:19:19.31 |
-05:45:10.6 |
HIP 115257 |
22.33 |
| 2026-02-14 00:00 |
23:20:54.43 |
-05:34:34.7 |
HIP 115257 |
20.17 |
| 2026-02-14 12:00 |
23:22:29.67 |
-05:23:56.7 |
HIP 115420 |
22.32 |
| 2026-02-15 00:00 |
23:24:05.04 |
-05:13:16.7 |
HIP 115599 |
13.61 |
| 2026-02-15 12:00 |
23:25:40.53 |
-05:02:34.8 |
HIP 115599 |
14.35 |
| 2026-02-16 00:00 |
23:27:16.14 |
-04:51:50.9 |
HIP 115700 |
17.75 |
| 2026-02-16 12:00 |
23:28:51.87 |
-04:41:05.1 |
HIP 115953 |
13.55 |
| 2026-02-17 00:00 |
23:30:27.73 |
-04:30:17.4 |
HIP 115953 |
13.99 |
| 2026-02-17 12:00 |
23:32:03.71 |
-04:19:28.0 |
HIP 116092 |
10.61 |
| 2026-02-18 00:00 |
23:33:39.82 |
-04:08:36.8 |
HIP 116266 |
15.71 |
| 2026-02-18 12:00 |
23:35:16.04 |
-03:57:43.8 |
HIP 116402 |
6.51 |
| 2026-02-19 00:00 |
23:36:52.39 |
-03:46:49.2 |
HIP 116638 |
19.54 |
| 2026-02-19 12:00 |
23:38:28.85 |
-03:35:52.9 |
HIP 116638 |
10.69 |
| 2026-02-20 00:00 |
23:40:05.44 |
-03:24:55.0 |
HIP 116735 |
19.35 |
| 2026-02-20 12:00 |
23:41:42.15 |
-03:13:55.6 |
HIP 116859 |
23.49 |
| 2026-02-21 00:00 |
23:43:18.98 |
-03:02:54.6 |
HIP 117043 |
16.44 |
| 2026-02-21 12:00 |
23:44:55.93 |
-02:51:52.1 |
HIP 117112 |
19.55 |
| 2026-02-22 00:00 |
23:46:33.00 |
-02:40:48.3 |
HIP 117375 |
21.41 |
| 2026-02-22 12:00 |
23:48:10.19 |
-02:29:43.0 |
HIP 117375 |
16.34 |
| 2026-02-23 00:00 |
23:49:47.50 |
-02:18:36.4 |
HIP 117614 |
24.13 |
| 2026-02-23 12:00 |
23:51:24.93 |
-02:07:28.5 |
HIP 117612 |
11.95 |
| 2026-02-24 00:00 |
23:53:02.48 |
-01:56:19.4 |
HIP 117820 |
19.30 |