メタデータ
| 項目 |
値 |
| Designation |
C/2005 X1 (Beshore) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-07-05T18:12:30.124800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:55Z |
| Obs used |
102 |
| NEO |
- |
| M1 |
14.000 |
| 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) |
2006-01-06.0000000 |
| e |
0.99573052 |
| q (au) |
2.862145 |
| a (au) |
670.372938 |
| i (deg) |
91.941447 |
| Ω (om, deg) |
302.797830 |
| ω (w, deg) |
117.784661 |
| M (ma, deg) |
0.010462 |
等級
散乱 + 全体線形
$$
M_a = (13.972 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.972 |
| n |
2.000 |
| gf |
0.892 |
| gb |
-0.500 |
| k |
0.944 |
| δ90 |
1.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
05:52:11.02 |
-61:51:23.6 |
HIP 27822 |
7.58 |
| 2026-05-12 12:00 |
05:52:15.77 |
-61:50:59.0 |
HIP 27822 |
6.98 |
| 2026-05-13 00:00 |
05:52:20.55 |
-61:50:34.6 |
HIP 27822 |
6.40 |
| 2026-05-13 12:00 |
05:52:25.35 |
-61:50:10.5 |
HIP 27822 |
5.83 |
| 2026-05-14 00:00 |
05:52:30.19 |
-61:49:46.7 |
HIP 27822 |
5.29 |
| 2026-05-14 12:00 |
05:52:35.05 |
-61:49:23.2 |
HIP 27822 |
4.78 |
| 2026-05-15 00:00 |
05:52:39.95 |
-61:49:00.0 |
HIP 27822 |
4.33 |
| 2026-05-15 12:00 |
05:52:44.87 |
-61:48:37.1 |
HIP 27822 |
3.93 |
| 2026-05-16 00:00 |
05:52:49.81 |
-61:48:14.6 |
HIP 27822 |
3.63 |
| 2026-05-16 12:00 |
05:52:54.79 |
-61:47:52.3 |
HIP 27822 |
3.43 |
| 2026-05-17 00:00 |
05:52:59.79 |
-61:47:30.3 |
HIP 27822 |
3.36 |
| 2026-05-17 12:00 |
05:53:04.82 |
-61:47:08.7 |
HIP 27822 |
3.43 |
| 2026-05-18 00:00 |
05:53:09.87 |
-61:46:47.3 |
HIP 27822 |
3.62 |
| 2026-05-18 12:00 |
05:53:14.95 |
-61:46:26.3 |
HIP 27822 |
3.93 |
| 2026-05-19 00:00 |
05:53:20.05 |
-61:46:05.5 |
HIP 27822 |
4.32 |
| 2026-05-19 12:00 |
05:53:25.18 |
-61:45:45.1 |
HIP 27822 |
4.78 |
| 2026-05-20 00:00 |
05:53:30.34 |
-61:45:25.0 |
HIP 27822 |
5.28 |
| 2026-05-20 12:00 |
05:53:35.51 |
-61:45:05.2 |
HIP 27822 |
5.82 |
| 2026-05-21 00:00 |
05:53:40.71 |
-61:44:45.8 |
HIP 27822 |
6.39 |
| 2026-05-21 12:00 |
05:53:45.94 |
-61:44:26.6 |
HIP 27822 |
6.98 |
| 2026-05-22 00:00 |
05:53:51.18 |
-61:44:07.8 |
HIP 27822 |
7.58 |
| 2026-05-22 12:00 |
05:53:56.45 |
-61:43:49.3 |
HIP 27822 |
8.19 |
| 2026-05-23 00:00 |
05:54:01.74 |
-61:43:31.1 |
HIP 27822 |
8.82 |
| 2026-05-23 12:00 |
05:54:07.05 |
-61:43:13.2 |
HIP 27822 |
9.45 |
| 2026-05-24 00:00 |
05:54:12.38 |
-61:42:55.7 |
HIP 27822 |
10.09 |
| 2026-05-24 12:00 |
05:54:17.74 |
-61:42:38.5 |
HIP 27822 |
10.73 |
| 2026-05-25 00:00 |
05:54:23.11 |
-61:42:21.6 |
HIP 27822 |
11.38 |
| 2026-05-25 12:00 |
05:54:28.51 |
-61:42:05.0 |
HIP 27822 |
12.03 |
| 2026-05-26 00:00 |
05:54:33.92 |
-61:41:48.8 |
HIP 27822 |
12.68 |
| 2026-05-26 12:00 |
05:54:39.35 |
-61:41:32.9 |
HIP 27822 |
13.34 |
| 2026-05-27 00:00 |
05:54:44.80 |
-61:41:17.3 |
HIP 27822 |
14.00 |
| 2026-05-27 12:00 |
05:54:50.27 |
-61:41:02.0 |
HIP 27822 |
14.66 |
| 2026-05-28 00:00 |
05:54:55.76 |
-61:40:47.1 |
HIP 27822 |
15.32 |
| 2026-05-28 12:00 |
05:55:01.27 |
-61:40:32.5 |
HIP 28077 |
15.79 |
| 2026-05-29 00:00 |
05:55:06.79 |
-61:40:18.3 |
HIP 28077 |
15.27 |
| 2026-05-29 12:00 |
05:55:12.33 |
-61:40:04.3 |
HIP 28077 |
14.76 |
| 2026-05-30 00:00 |
05:55:17.89 |
-61:39:50.7 |
HIP 28077 |
14.27 |
| 2026-05-30 12:00 |
05:55:23.46 |
-61:39:37.5 |
HIP 28077 |
13.81 |
| 2026-05-31 00:00 |
05:55:29.05 |
-61:39:24.5 |
HIP 28077 |
13.37 |
| 2026-05-31 12:00 |
05:55:34.66 |
-61:39:12.0 |
HIP 28077 |
12.95 |
| 2026-06-01 00:00 |
05:55:40.28 |
-61:38:59.7 |
HIP 28077 |
12.57 |
| 2026-06-01 12:00 |
05:55:45.92 |
-61:38:47.8 |
HIP 28077 |
12.22 |
| 2026-06-02 00:00 |
05:55:51.57 |
-61:38:36.2 |
HIP 28077 |
11.91 |