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) |
| 2026-03-26 00:00 |
05:47:41.34 |
-62:46:54.9 |
HIP 27508 |
18.94 |
| 2026-03-26 12:00 |
05:47:41.96 |
-62:46:12.6 |
HIP 27508 |
19.44 |
| 2026-03-27 00:00 |
05:47:42.64 |
-62:45:30.3 |
HIP 27508 |
19.94 |
| 2026-03-27 12:00 |
05:47:43.37 |
-62:44:48.0 |
HIP 27508 |
20.45 |
| 2026-03-28 00:00 |
05:47:44.16 |
-62:44:05.9 |
HIP 27508 |
20.97 |
| 2026-03-28 12:00 |
05:47:45.00 |
-62:43:23.8 |
HIP 27508 |
21.50 |
| 2026-03-29 00:00 |
05:47:45.90 |
-62:42:41.7 |
HIP 27508 |
22.03 |
| 2026-03-29 12:00 |
05:47:46.85 |
-62:41:59.8 |
HIP 27508 |
22.57 |
| 2026-03-30 00:00 |
05:47:47.85 |
-62:41:17.9 |
HIP 27508 |
23.11 |
| 2026-03-30 12:00 |
05:47:48.91 |
-62:40:36.1 |
HIP 27508 |
23.66 |
| 2026-03-31 00:00 |
05:47:50.02 |
-62:39:54.4 |
HIP 27508 |
24.21 |
| 2026-03-31 12:00 |
05:47:51.19 |
-62:39:12.8 |
HIP 27508 |
24.76 |
| 2026-04-01 00:00 |
05:47:52.41 |
-62:38:31.3 |
HIP 27508 |
25.32 |
| 2026-04-01 12:00 |
05:47:53.68 |
-62:37:49.9 |
HIP 27508 |
25.88 |
| 2026-04-02 00:00 |
05:47:55.01 |
-62:37:08.6 |
HIP 27508 |
26.44 |
| 2026-04-02 12:00 |
05:47:56.39 |
-62:36:27.4 |
HIP 27508 |
27.01 |
| 2026-04-03 00:00 |
05:47:57.82 |
-62:35:46.3 |
HIP 27508 |
27.58 |
| 2026-04-03 12:00 |
05:47:59.30 |
-62:35:05.2 |
HIP 27508 |
28.15 |
| 2026-04-04 00:00 |
05:48:00.83 |
-62:34:24.3 |
HIP 27508 |
28.72 |
| 2026-04-04 12:00 |
05:48:02.42 |
-62:33:43.6 |
HIP 27508 |
29.30 |
| 2026-04-05 00:00 |
05:48:04.06 |
-62:33:02.9 |
HIP 27508 |
29.87 |
| 2026-04-05 12:00 |
05:48:05.75 |
-62:32:22.3 |
HIP 27508 |
30.45 |
| 2026-04-06 00:00 |
05:48:07.49 |
-62:31:41.9 |
HIP 27568 |
30.91 |
| 2026-04-06 12:00 |
05:48:09.29 |
-62:31:01.6 |
HIP 27568 |
30.23 |
| 2026-04-07 00:00 |
05:48:11.13 |
-62:30:21.4 |
HIP 27568 |
29.54 |
| 2026-04-07 12:00 |
05:48:13.03 |
-62:29:41.4 |
HIP 27568 |
28.86 |
| 2026-04-08 00:00 |
05:48:14.97 |
-62:29:01.4 |
HIP 27568 |
28.17 |
| 2026-04-08 12:00 |
05:48:16.97 |
-62:28:21.7 |
HIP 27568 |
27.48 |
| 2026-04-09 00:00 |
05:48:19.01 |
-62:27:42.0 |
HIP 27568 |
26.80 |
| 2026-04-09 12:00 |
05:48:21.11 |
-62:27:02.5 |
HIP 27568 |
26.11 |
| 2026-04-10 00:00 |
05:48:23.25 |
-62:26:23.1 |
HIP 27568 |
25.42 |
| 2026-04-10 12:00 |
05:48:25.45 |
-62:25:43.9 |
HIP 27568 |
24.73 |
| 2026-04-11 00:00 |
05:48:27.69 |
-62:25:04.8 |
HIP 27568 |
24.04 |
| 2026-04-11 12:00 |
05:48:29.98 |
-62:24:25.9 |
HIP 27568 |
23.35 |
| 2026-04-12 00:00 |
05:48:32.33 |
-62:23:47.2 |
HIP 27568 |
22.67 |
| 2026-04-12 12:00 |
05:48:34.72 |
-62:23:08.6 |
HIP 27568 |
21.98 |
| 2026-04-13 00:00 |
05:48:37.16 |
-62:22:30.1 |
HIP 27568 |
21.29 |
| 2026-04-13 12:00 |
05:48:39.64 |
-62:21:51.9 |
HIP 27568 |
20.60 |
| 2026-04-14 00:00 |
05:48:42.18 |
-62:21:13.7 |
HIP 27568 |
19.91 |
| 2026-04-14 12:00 |
05:48:44.76 |
-62:20:35.8 |
HIP 27568 |
19.22 |
| 2026-04-15 00:00 |
05:48:47.39 |
-62:19:58.0 |
HIP 27568 |
18.53 |
| 2026-04-15 12:00 |
05:48:50.06 |
-62:19:20.4 |
HIP 27568 |
17.83 |
| 2026-04-16 00:00 |
05:48:52.79 |
-62:18:43.0 |
HIP 27568 |
17.14 |