メタデータ
| 項目 |
値 |
| Designation |
P/2009 B1 (Boattini) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-02-06T04:48:47.580480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:28Z |
| Obs used |
111 |
| NEO |
- |
| M1 |
13.200 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2009-01-31.0000000 |
| e |
0.63719062 |
| q (au) |
2.426592 |
| a (au) |
6.688339 |
| i (deg) |
22.228478 |
| Ω (om, deg) |
297.438307 |
| ω (w, deg) |
128.593842 |
| M (ma, deg) |
359.646689 |
等級
散乱 + 全体線形
$$
M_a = (11.341 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.341 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.902 |
| 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
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) |
| 2026-03-26 00:00 |
01:15:19.71 |
+25:42:57.7 |
HIP 5914 |
10.70 |
| 2026-03-26 12:00 |
01:16:20.40 |
+25:47:28.4 |
HIP 5914 |
3.70 |
| 2026-03-27 00:00 |
01:17:21.21 |
+25:51:59.0 |
HIP 5914 |
18.10 |
| 2026-03-27 12:00 |
01:18:22.13 |
+25:56:29.4 |
HIP 6101 |
9.22 |
| 2026-03-28 00:00 |
01:19:23.18 |
+26:00:59.8 |
HIP 6101 |
14.84 |
| 2026-03-28 12:00 |
01:20:24.34 |
+26:05:30.0 |
HIP 6101 |
27.81 |
| 2026-03-29 00:00 |
01:21:25.63 |
+26:10:00.0 |
HIP 6434 |
28.71 |
| 2026-03-29 12:00 |
01:22:27.03 |
+26:14:29.9 |
HIP 6434 |
19.41 |
| 2026-03-30 00:00 |
01:23:28.54 |
+26:18:59.5 |
HIP 6434 |
18.66 |
| 2026-03-30 12:00 |
01:24:30.18 |
+26:23:29.0 |
HIP 6434 |
27.21 |
| 2026-03-31 00:00 |
01:25:31.94 |
+26:27:58.3 |
HIP 6678 |
24.80 |
| 2026-03-31 12:00 |
01:26:33.81 |
+26:32:27.3 |
HIP 6678 |
23.53 |
| 2026-04-01 00:00 |
01:27:35.80 |
+26:36:56.1 |
HIP 6678 |
30.27 |
| 2026-04-01 12:00 |
01:28:37.91 |
+26:41:24.6 |
HIP 7049 |
32.34 |
| 2026-04-02 00:00 |
01:29:40.13 |
+26:45:52.8 |
HIP 7049 |
23.32 |
| 2026-04-02 12:00 |
01:30:42.48 |
+26:50:20.8 |
HIP 7049 |
21.65 |
| 2026-04-03 00:00 |
01:31:44.94 |
+26:54:48.4 |
HIP 7049 |
28.67 |
| 2026-04-03 12:00 |
01:32:47.52 |
+26:59:15.8 |
HIP 7287 |
20.90 |
| 2026-04-04 00:00 |
01:33:50.21 |
+27:03:42.8 |
HIP 7287 |
10.49 |
| 2026-04-04 12:00 |
01:34:53.03 |
+27:08:09.5 |
HIP 7287 |
14.58 |
| 2026-04-05 00:00 |
01:35:55.96 |
+27:12:35.8 |
HIP 7482 |
5.83 |
| 2026-04-05 12:00 |
01:36:59.01 |
+27:17:01.7 |
HIP 7482 |
8.88 |
| 2026-04-06 00:00 |
01:38:02.18 |
+27:21:27.3 |
HIP 7482 |
23.59 |
| 2026-04-06 12:00 |
01:39:05.46 |
+27:25:52.4 |
HIP 7708 |
19.62 |
| 2026-04-07 00:00 |
01:40:08.86 |
+27:30:17.2 |
HIP 7708 |
19.35 |
| 2026-04-07 12:00 |
01:41:12.38 |
+27:34:41.5 |
HIP 7894 |
22.13 |
| 2026-04-08 00:00 |
01:42:16.02 |
+27:39:05.4 |
HIP 8043 |
17.46 |
| 2026-04-08 12:00 |
01:43:19.77 |
+27:43:28.8 |
HIP 8043 |
7.11 |
| 2026-04-09 00:00 |
01:44:23.64 |
+27:47:51.8 |
HIP 8043 |
15.28 |
| 2026-04-09 12:00 |
01:45:27.63 |
+27:52:14.3 |
HIP 8069 |
26.11 |
| 2026-04-10 00:00 |
01:46:31.73 |
+27:56:36.3 |
HIP 8356 |
35.78 |
| 2026-04-10 12:00 |
01:47:35.95 |
+28:00:57.8 |
HIP 8356 |
27.97 |
| 2026-04-11 00:00 |
01:48:40.29 |
+28:05:18.7 |
HIP 8571 |
26.35 |
| 2026-04-11 12:00 |
01:49:44.74 |
+28:09:39.1 |
HIP 8571 |
17.12 |
| 2026-04-12 00:00 |
01:50:49.31 |
+28:13:59.0 |
HIP 8571 |
18.28 |
| 2026-04-12 12:00 |
01:51:53.99 |
+28:18:18.3 |
HIP 8806 |
24.07 |
| 2026-04-13 00:00 |
01:52:58.79 |
+28:22:37.0 |
HIP 8806 |
21.47 |
| 2026-04-13 12:00 |
01:54:03.70 |
+28:26:55.1 |
HIP 8804 |
25.10 |
| 2026-04-14 00:00 |
01:55:08.73 |
+28:31:12.6 |
HIP 8938 |
16.67 |
| 2026-04-14 12:00 |
01:56:13.87 |
+28:35:29.5 |
HIP 8938 |
19.13 |
| 2026-04-15 00:00 |
01:57:19.12 |
+28:39:45.8 |
HIP 9166 |
12.59 |
| 2026-04-15 12:00 |
01:58:24.49 |
+28:44:01.3 |
HIP 9246 |
10.02 |
| 2026-04-16 00:00 |
01:59:29.97 |
+28:48:16.2 |
HIP 9246 |
8.70 |