メタデータ
| 項目 |
値 |
| Designation |
C/2006 K3 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-03-13T08:54:02.200320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:57Z |
| Obs used |
205 |
| NEO |
- |
| M1 |
12.500 |
| 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) |
2006-11-30.0000000 |
| e |
1.00079393 |
| q (au) |
2.501449 |
| a (au) |
-3150.724234 |
| i (deg) |
92.619997 |
| Ω (om, deg) |
49.402439 |
| ω (w, deg) |
328.077856 |
| M (ma, deg) |
-0.000576 |
等級
散乱 + 全体線形
$$
M_a = (15.835 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.835 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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 |
| 2006-05-22 |
2007-03-09 |
-2.3577 |
+1.206 |
| 2007-07-25 |
2008-01-26 |
+22.6017 |
-11.094 |
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) |
| 2026-06-01 00:00 |
16:33:37.60 |
+42:10:48.7 |
HIP 81126 |
16.28 |
| 2026-06-01 12:00 |
16:33:33.36 |
+42:10:49.0 |
HIP 81126 |
16.55 |
| 2026-06-02 00:00 |
16:33:29.12 |
+42:10:48.9 |
HIP 81126 |
16.86 |
| 2026-06-02 12:00 |
16:33:24.88 |
+42:10:48.4 |
HIP 81126 |
17.20 |
| 2026-06-03 00:00 |
16:33:20.64 |
+42:10:47.6 |
HIP 81126 |
17.57 |
| 2026-06-03 12:00 |
16:33:16.41 |
+42:10:46.4 |
HIP 81126 |
17.98 |
| 2026-06-04 00:00 |
16:33:12.17 |
+42:10:44.8 |
HIP 81126 |
18.41 |
| 2026-06-04 12:00 |
16:33:07.94 |
+42:10:42.9 |
HIP 80929 |
17.94 |
| 2026-06-05 00:00 |
16:33:03.71 |
+42:10:40.6 |
HIP 80929 |
17.16 |
| 2026-06-05 12:00 |
16:32:59.49 |
+42:10:38.0 |
HIP 80929 |
16.37 |
| 2026-06-06 00:00 |
16:32:55.26 |
+42:10:35.0 |
HIP 80929 |
15.59 |
| 2026-06-06 12:00 |
16:32:51.05 |
+42:10:31.6 |
HIP 80929 |
14.80 |
| 2026-06-07 00:00 |
16:32:46.83 |
+42:10:27.9 |
HIP 80929 |
14.02 |
| 2026-06-07 12:00 |
16:32:42.62 |
+42:10:23.8 |
HIP 80929 |
13.24 |
| 2026-06-08 00:00 |
16:32:38.42 |
+42:10:19.3 |
HIP 80929 |
12.46 |
| 2026-06-08 12:00 |
16:32:34.22 |
+42:10:14.5 |
HIP 80929 |
11.68 |
| 2026-06-09 00:00 |
16:32:30.02 |
+42:10:09.3 |
HIP 80929 |
10.90 |
| 2026-06-09 12:00 |
16:32:25.83 |
+42:10:03.8 |
HIP 80929 |
10.12 |
| 2026-06-10 00:00 |
16:32:21.65 |
+42:09:57.8 |
HIP 80929 |
9.34 |
| 2026-06-10 12:00 |
16:32:17.47 |
+42:09:51.6 |
HIP 80929 |
8.57 |
| 2026-06-11 00:00 |
16:32:13.30 |
+42:09:44.9 |
HIP 80929 |
7.79 |
| 2026-06-11 12:00 |
16:32:09.14 |
+42:09:37.9 |
HIP 80929 |
7.02 |
| 2026-06-12 00:00 |
16:32:04.99 |
+42:09:30.6 |
HIP 80929 |
6.26 |
| 2026-06-12 12:00 |
16:32:00.84 |
+42:09:22.8 |
HIP 80929 |
5.50 |
| 2026-06-13 00:00 |
16:31:56.70 |
+42:09:14.7 |
HIP 80929 |
4.74 |
| 2026-06-13 12:00 |
16:31:52.57 |
+42:09:06.3 |
HIP 80929 |
4.00 |
| 2026-06-14 00:00 |
16:31:48.44 |
+42:08:57.5 |
HIP 80929 |
3.28 |
| 2026-06-14 12:00 |
16:31:44.33 |
+42:08:48.3 |
HIP 80929 |
2.60 |
| 2026-06-15 00:00 |
16:31:40.23 |
+42:08:38.8 |
HIP 80929 |
2.00 |
| 2026-06-15 12:00 |
16:31:36.13 |
+42:08:28.9 |
HIP 80929 |
1.56 |
| 2026-06-16 00:00 |
16:31:32.05 |
+42:08:18.7 |
HIP 80929 |
1.46 |
| 2026-06-16 12:00 |
16:31:27.97 |
+42:08:08.1 |
HIP 80929 |
1.73 |
| 2026-06-17 00:00 |
16:31:23.91 |
+42:07:57.1 |
HIP 80929 |
2.26 |
| 2026-06-17 12:00 |
16:31:19.85 |
+42:07:45.8 |
HIP 80929 |
2.91 |
| 2026-06-18 00:00 |
16:31:15.81 |
+42:07:34.1 |
HIP 80929 |
3.60 |
| 2026-06-18 12:00 |
16:31:11.78 |
+42:07:22.1 |
HIP 80929 |
4.33 |
| 2026-06-19 00:00 |
16:31:07.76 |
+42:07:09.8 |
HIP 80929 |
5.07 |
| 2026-06-19 12:00 |
16:31:03.76 |
+42:06:57.0 |
HIP 80929 |
5.82 |
| 2026-06-20 00:00 |
16:30:59.77 |
+42:06:44.0 |
HIP 80929 |
6.58 |
| 2026-06-20 12:00 |
16:30:55.79 |
+42:06:30.6 |
HIP 80929 |
7.33 |
| 2026-06-21 00:00 |
16:30:51.82 |
+42:06:16.8 |
HIP 80929 |
8.10 |
| 2026-06-21 12:00 |
16:30:47.86 |
+42:06:02.7 |
HIP 80929 |
8.86 |
| 2026-06-22 00:00 |
16:30:43.92 |
+42:05:48.3 |
HIP 80929 |
9.63 |