メタデータ
| 項目 |
値 |
| Designation |
C/2006 OF2 (Broughton) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-09-15T16:27:21.395520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:59Z |
| Obs used |
4756 |
| NEO |
- |
| M1 |
9.600 |
| K1 |
5.250 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2008-07-16.0000000 |
| e |
1.00078340 |
| q (au) |
2.431442 |
| a (au) |
-3103.701825 |
| i (deg) |
30.170433 |
| Ω (om, deg) |
318.508724 |
| ω (w, deg) |
95.611765 |
| M (ma, deg) |
-0.000352 |
等級
散乱 + 全体線形
$$
M_a = (7.286 + 3.919\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.286 |
| n |
3.919 |
| gf |
1.000 |
| gb |
-0.703 |
| k |
0.800 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2007-08-05 |
2008-09-10 |
-1.1552 |
+1.003 |
| 2008-09-22 |
2009-01-13 |
-12.3341 |
+5.132 |
| 2009-01-13 |
2011-01-09 |
+4.4199 |
-2.467 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
12:23:48.72 |
-33:04:38.8 |
HIP 60594 |
17.36 |
| 2026-05-12 12:00 |
12:23:46.29 |
-33:04:11.0 |
HIP 60594 |
17.90 |
| 2026-05-13 00:00 |
12:23:43.89 |
-33:03:43.1 |
HIP 60594 |
18.44 |
| 2026-05-13 12:00 |
12:23:41.52 |
-33:03:15.1 |
HIP 60594 |
18.99 |
| 2026-05-14 00:00 |
12:23:39.16 |
-33:02:47.1 |
HIP 60594 |
19.54 |
| 2026-05-14 12:00 |
12:23:36.83 |
-33:02:19.1 |
HIP 60594 |
20.09 |
| 2026-05-15 00:00 |
12:23:34.53 |
-33:01:51.0 |
HIP 60594 |
20.65 |
| 2026-05-15 12:00 |
12:23:32.24 |
-33:01:22.9 |
HIP 60594 |
21.21 |
| 2026-05-16 00:00 |
12:23:29.99 |
-33:00:54.7 |
HIP 60594 |
21.77 |
| 2026-05-16 12:00 |
12:23:27.75 |
-33:00:26.6 |
HIP 60594 |
22.33 |
| 2026-05-17 00:00 |
12:23:25.54 |
-32:59:58.4 |
HIP 60594 |
22.89 |
| 2026-05-17 12:00 |
12:23:23.36 |
-32:59:30.2 |
HIP 60594 |
23.45 |
| 2026-05-18 00:00 |
12:23:21.20 |
-32:59:02.0 |
HIP 60594 |
24.01 |
| 2026-05-18 12:00 |
12:23:19.07 |
-32:58:33.7 |
HIP 60594 |
24.57 |
| 2026-05-19 00:00 |
12:23:16.96 |
-32:58:05.4 |
HIP 60594 |
25.14 |
| 2026-05-19 12:00 |
12:23:14.88 |
-32:57:37.2 |
HIP 60594 |
25.70 |
| 2026-05-20 00:00 |
12:23:12.82 |
-32:57:08.9 |
HIP 60594 |
26.25 |
| 2026-05-20 12:00 |
12:23:10.79 |
-32:56:40.6 |
HIP 60594 |
26.81 |
| 2026-05-21 00:00 |
12:23:08.78 |
-32:56:12.3 |
HIP 60594 |
27.37 |
| 2026-05-21 12:00 |
12:23:06.80 |
-32:55:44.0 |
HIP 60594 |
27.92 |
| 2026-05-22 00:00 |
12:23:04.85 |
-32:55:15.7 |
HIP 60594 |
28.47 |
| 2026-05-22 12:00 |
12:23:02.92 |
-32:54:47.4 |
HIP 60594 |
29.02 |
| 2026-05-23 00:00 |
12:23:01.02 |
-32:54:19.1 |
HIP 60594 |
29.57 |
| 2026-05-23 12:00 |
12:22:59.14 |
-32:53:50.8 |
HIP 60594 |
30.11 |
| 2026-05-24 00:00 |
12:22:57.29 |
-32:53:22.6 |
HIP 60594 |
30.66 |
| 2026-05-24 12:00 |
12:22:55.47 |
-32:52:54.3 |
HIP 60594 |
31.20 |
| 2026-05-25 00:00 |
12:22:53.68 |
-32:52:26.1 |
HIP 60594 |
31.73 |
| 2026-05-25 12:00 |
12:22:51.91 |
-32:51:57.8 |
HIP 60594 |
32.27 |
| 2026-05-26 00:00 |
12:22:50.17 |
-32:51:29.6 |
HIP 60594 |
32.80 |
| 2026-05-26 12:00 |
12:22:48.46 |
-32:51:01.4 |
HIP 60594 |
33.33 |
| 2026-05-27 00:00 |
12:22:46.77 |
-32:50:33.3 |
HIP 60594 |
33.85 |
| 2026-05-27 12:00 |
12:22:45.11 |
-32:50:05.1 |
HIP 60594 |
34.38 |
| 2026-05-28 00:00 |
12:22:43.48 |
-32:49:37.0 |
HIP 60594 |
34.90 |
| 2026-05-28 12:00 |
12:22:41.87 |
-32:49:08.9 |
HIP 60594 |
35.41 |
| 2026-05-29 00:00 |
12:22:40.30 |
-32:48:40.9 |
HIP 60594 |
35.92 |
| 2026-05-29 12:00 |
12:22:38.75 |
-32:48:12.9 |
HIP 60594 |
36.43 |
| 2026-05-30 00:00 |
12:22:37.22 |
-32:47:44.9 |
HIP 60594 |
36.94 |
| 2026-05-30 12:00 |
12:22:35.73 |
-32:47:17.0 |
HIP 60594 |
37.44 |
| 2026-05-31 00:00 |
12:22:34.26 |
-32:46:49.1 |
HIP 60594 |
37.93 |
| 2026-05-31 12:00 |
12:22:32.83 |
-32:46:21.2 |
HIP 60594 |
38.43 |
| 2026-06-01 00:00 |
12:22:31.42 |
-32:45:53.4 |
HIP 60594 |
38.92 |
| 2026-06-01 12:00 |
12:22:30.03 |
-32:45:25.6 |
HIP 60102 |
38.77 |
| 2026-06-02 00:00 |
12:22:28.68 |
-32:44:57.9 |
HIP 60102 |
38.38 |