C/2006 OF2 (Broughton)
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
$$
M_a = (7.296 + 3.908\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.296 |
| n |
3.908 |
| 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 |
-1.1310 |
+0.994 |
| 2008-09-22 |
2009-10-01 |
-3.9455 |
+1.646 |
| 2009-10-01 |
2011-01-09 |
+11.5131 |
-8.181 |
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) |
| 2026-02-03 00:00 |
12:33:51.14 |
-33:40:12.7 |
HIP 61122 |
28.29 |
| 2026-02-03 12:00 |
12:33:49.19 |
-33:40:25.7 |
HIP 61122 |
27.89 |
| 2026-02-04 00:00 |
12:33:47.21 |
-33:40:38.6 |
HIP 61122 |
27.48 |
| 2026-02-04 12:00 |
12:33:45.21 |
-33:40:51.1 |
HIP 61122 |
27.06 |
| 2026-02-05 00:00 |
12:33:43.18 |
-33:41:03.5 |
HIP 61122 |
26.65 |
| 2026-02-05 12:00 |
12:33:41.12 |
-33:41:15.5 |
HIP 61122 |
26.23 |
| 2026-02-06 00:00 |
12:33:39.04 |
-33:41:27.3 |
HIP 61122 |
25.80 |
| 2026-02-06 12:00 |
12:33:36.93 |
-33:41:38.9 |
HIP 61122 |
25.37 |
| 2026-02-07 00:00 |
12:33:34.79 |
-33:41:50.2 |
HIP 61122 |
24.94 |
| 2026-02-07 12:00 |
12:33:32.63 |
-33:42:01.3 |
HIP 61122 |
24.50 |
| 2026-02-08 00:00 |
12:33:30.44 |
-33:42:12.1 |
HIP 61122 |
24.06 |
| 2026-02-08 12:00 |
12:33:28.22 |
-33:42:22.6 |
HIP 61122 |
23.62 |
| 2026-02-09 00:00 |
12:33:25.98 |
-33:42:32.9 |
HIP 61122 |
23.17 |
| 2026-02-09 12:00 |
12:33:23.71 |
-33:42:42.9 |
HIP 61122 |
22.72 |
| 2026-02-10 00:00 |
12:33:21.42 |
-33:42:52.6 |
HIP 61122 |
22.26 |
| 2026-02-10 12:00 |
12:33:19.10 |
-33:43:02.1 |
HIP 61122 |
21.80 |
| 2026-02-11 00:00 |
12:33:16.76 |
-33:43:11.3 |
HIP 61122 |
21.34 |
| 2026-02-11 12:00 |
12:33:14.39 |
-33:43:20.3 |
HIP 61122 |
20.87 |
| 2026-02-12 00:00 |
12:33:12.00 |
-33:43:29.0 |
HIP 61122 |
20.40 |
| 2026-02-12 12:00 |
12:33:09.58 |
-33:43:37.4 |
HIP 61122 |
19.93 |
| 2026-02-13 00:00 |
12:33:07.14 |
-33:43:45.6 |
HIP 61122 |
19.45 |
| 2026-02-13 12:00 |
12:33:04.67 |
-33:43:53.5 |
HIP 61122 |
18.97 |
| 2026-02-14 00:00 |
12:33:02.18 |
-33:44:01.1 |
HIP 61122 |
18.49 |
| 2026-02-14 12:00 |
12:32:59.66 |
-33:44:08.5 |
HIP 61122 |
18.01 |
| 2026-02-15 00:00 |
12:32:57.13 |
-33:44:15.6 |
HIP 61122 |
17.52 |
| 2026-02-15 12:00 |
12:32:54.57 |
-33:44:22.4 |
HIP 61122 |
17.03 |
| 2026-02-16 00:00 |
12:32:51.98 |
-33:44:29.0 |
HIP 61122 |
16.54 |
| 2026-02-16 12:00 |
12:32:49.37 |
-33:44:35.2 |
HIP 61122 |
16.04 |
| 2026-02-17 00:00 |
12:32:46.74 |
-33:44:41.2 |
HIP 61122 |
15.54 |
| 2026-02-17 12:00 |
12:32:44.09 |
-33:44:47.0 |
HIP 61122 |
15.04 |
| 2026-02-18 00:00 |
12:32:41.42 |
-33:44:52.5 |
HIP 61122 |
14.54 |
| 2026-02-18 12:00 |
12:32:38.72 |
-33:44:57.6 |
HIP 61122 |
14.04 |
| 2026-02-19 00:00 |
12:32:36.00 |
-33:45:02.6 |
HIP 61122 |
13.54 |
| 2026-02-19 12:00 |
12:32:33.26 |
-33:45:07.2 |
HIP 61122 |
13.04 |
| 2026-02-20 00:00 |
12:32:30.50 |
-33:45:11.6 |
HIP 61122 |
12.54 |
| 2026-02-20 12:00 |
12:32:27.72 |
-33:45:15.7 |
HIP 61122 |
12.04 |
| 2026-02-21 00:00 |
12:32:24.92 |
-33:45:19.5 |
HIP 61122 |
11.54 |
| 2026-02-21 12:00 |
12:32:22.10 |
-33:45:23.0 |
HIP 61122 |
11.04 |
| 2026-02-22 00:00 |
12:32:19.26 |
-33:45:26.3 |
HIP 61122 |
10.55 |
| 2026-02-22 12:00 |
12:32:16.39 |
-33:45:29.3 |
HIP 61122 |
10.06 |
| 2026-02-23 00:00 |
12:32:13.51 |
-33:45:32.0 |
HIP 61122 |
9.58 |
| 2026-02-23 12:00 |
12:32:10.61 |
-33:45:34.5 |
HIP 61122 |
9.11 |
| 2026-02-24 00:00 |
12:32:07.69 |
-33:45:36.7 |
HIP 61122 |
8.65 |