メタデータ
| 項目 |
値 |
| Designation |
53P/Van Biesbroeck |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-04-30T19:59:30.923520Z |
| Orbit solution date (soln_date, UTC) |
2026-03-09T09:09:38Z |
| Obs used |
2926 |
| NEO |
- |
| M1 |
10.000 |
| K1 |
9.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-08-29.0000000 |
| e |
0.55103774 |
| q (au) |
2.426494 |
| a (au) |
5.404674 |
| i (deg) |
6.611054 |
| Ω (om, deg) |
148.898788 |
| ω (w, deg) |
134.261588 |
| M (ma, deg) |
226.112232 |
等級
散乱 + 全体線形
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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) |
| 2026-06-01 00:00 |
09:30:39.16 |
+14:46:13.5 |
HIP 46525 |
24.28 |
| 2026-06-01 12:00 |
09:30:50.42 |
+14:45:29.5 |
HIP 46525 |
25.99 |
| 2026-06-02 00:00 |
09:31:01.80 |
+14:44:44.9 |
HIP 46525 |
27.91 |
| 2026-06-02 12:00 |
09:31:13.30 |
+14:43:59.6 |
HIP 46525 |
29.99 |
| 2026-06-03 00:00 |
09:31:24.92 |
+14:43:13.7 |
HIP 46864 |
29.28 |
| 2026-06-03 12:00 |
09:31:36.65 |
+14:42:27.2 |
HIP 46864 |
26.63 |
| 2026-06-04 00:00 |
09:31:48.50 |
+14:41:40.0 |
HIP 46864 |
24.02 |
| 2026-06-04 12:00 |
09:32:00.47 |
+14:40:52.2 |
HIP 46864 |
21.49 |
| 2026-06-05 00:00 |
09:32:12.55 |
+14:40:03.8 |
HIP 46864 |
19.06 |
| 2026-06-05 12:00 |
09:32:24.74 |
+14:39:14.8 |
HIP 46864 |
16.81 |
| 2026-06-06 00:00 |
09:32:37.05 |
+14:38:25.2 |
HIP 46864 |
14.84 |
| 2026-06-06 12:00 |
09:32:49.47 |
+14:37:35.0 |
HIP 46864 |
13.28 |
| 2026-06-07 00:00 |
09:33:02.00 |
+14:36:44.1 |
HIP 46864 |
12.32 |
| 2026-06-07 12:00 |
09:33:14.64 |
+14:35:52.6 |
HIP 46864 |
12.13 |
| 2026-06-08 00:00 |
09:33:27.40 |
+14:35:00.6 |
HIP 46864 |
12.76 |
| 2026-06-08 12:00 |
09:33:40.26 |
+14:34:07.9 |
HIP 46969 |
10.40 |
| 2026-06-09 00:00 |
09:33:53.24 |
+14:33:14.6 |
HIP 46969 |
7.50 |
| 2026-06-09 12:00 |
09:34:06.32 |
+14:32:20.7 |
HIP 46969 |
5.07 |
| 2026-06-10 00:00 |
09:34:19.51 |
+14:31:26.2 |
HIP 46969 |
4.09 |
| 2026-06-10 12:00 |
09:34:32.81 |
+14:30:31.1 |
HIP 46969 |
5.48 |
| 2026-06-11 00:00 |
09:34:46.22 |
+14:29:35.4 |
HIP 46969 |
8.14 |
| 2026-06-11 12:00 |
09:34:59.73 |
+14:28:39.1 |
HIP 46969 |
11.21 |
| 2026-06-12 00:00 |
09:35:13.35 |
+14:27:42.2 |
HIP 47096 |
10.77 |
| 2026-06-12 12:00 |
09:35:27.08 |
+14:26:44.8 |
HIP 47096 |
7.41 |
| 2026-06-13 00:00 |
09:35:40.90 |
+14:25:46.7 |
HIP 47096 |
4.18 |
| 2026-06-13 12:00 |
09:35:54.84 |
+14:24:48.0 |
HIP 47096 |
2.08 |
| 2026-06-14 00:00 |
09:36:08.87 |
+14:23:48.8 |
HIP 47096 |
4.00 |
| 2026-06-14 12:00 |
09:36:23.01 |
+14:22:49.0 |
HIP 47096 |
7.29 |
| 2026-06-15 00:00 |
09:36:37.25 |
+14:21:48.6 |
HIP 47096 |
10.78 |
| 2026-06-15 12:00 |
09:36:51.59 |
+14:20:47.6 |
HIP 47096 |
14.35 |
| 2026-06-16 00:00 |
09:37:06.03 |
+14:19:46.1 |
HIP 47266 |
13.43 |
| 2026-06-16 12:00 |
09:37:20.57 |
+14:18:43.9 |
HIP 47266 |
10.09 |
| 2026-06-17 00:00 |
09:37:35.20 |
+14:17:41.2 |
HIP 47266 |
7.07 |
| 2026-06-17 12:00 |
09:37:49.94 |
+14:16:38.0 |
HIP 47266 |
5.04 |
| 2026-06-18 00:00 |
09:38:04.77 |
+14:15:34.2 |
HIP 47266 |
5.34 |
| 2026-06-18 12:00 |
09:38:19.70 |
+14:14:29.8 |
HIP 47266 |
7.76 |
| 2026-06-19 00:00 |
09:38:34.72 |
+14:13:24.9 |
HIP 47266 |
10.99 |
| 2026-06-19 12:00 |
09:38:49.83 |
+14:12:19.4 |
HIP 47368 |
13.44 |
| 2026-06-20 00:00 |
09:39:05.04 |
+14:11:13.4 |
HIP 47368 |
14.10 |
| 2026-06-20 12:00 |
09:39:20.35 |
+14:10:06.8 |
HIP 47368 |
15.72 |
| 2026-06-21 00:00 |
09:39:35.74 |
+14:08:59.7 |
HIP 47368 |
18.06 |
| 2026-06-21 12:00 |
09:39:51.23 |
+14:07:52.0 |
HIP 47503 |
18.02 |
| 2026-06-22 00:00 |
09:40:06.80 |
+14:06:43.8 |
HIP 47503 |
14.27 |