C/2006 K1 (McNaught)
メタデータ
| 項目 |
値 |
| Designation |
C/2006 K1 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-07-20T13:20:54.202560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:57Z |
| Obs used |
415 |
| NEO |
- |
| M1 |
10.600 |
| K1 |
4.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2007-09-22.0000000 |
| e |
1.00160448 |
| q (au) |
4.425528 |
| a (au) |
-2758.226517 |
| i (deg) |
53.876740 |
| Ω (om, deg) |
72.115378 |
| ω (w, deg) |
296.442521 |
| M (ma, deg) |
0.000432 |
等級
散乱 + 全体線形
$$
M_a = (9.839 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.839 |
| n |
2.000 |
| gf |
0.989 |
| gb |
-0.939 |
| k |
1.000 |
| δ90 |
9.785 |
| 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) |
| 2026-02-03 00:00 |
11:30:16.55 |
+62:55:04.7 |
HIP 56199 |
15.73 |
| 2026-02-03 12:00 |
11:30:11.68 |
+62:55:38.5 |
HIP 56199 |
15.46 |
| 2026-02-04 00:00 |
11:30:06.76 |
+62:56:12.2 |
HIP 56199 |
15.22 |
| 2026-02-04 12:00 |
11:30:01.81 |
+62:56:45.5 |
HIP 56199 |
15.04 |
| 2026-02-05 00:00 |
11:29:56.81 |
+62:57:18.6 |
HIP 56199 |
14.89 |
| 2026-02-05 12:00 |
11:29:51.78 |
+62:57:51.4 |
HIP 56199 |
14.80 |
| 2026-02-06 00:00 |
11:29:46.71 |
+62:58:23.9 |
HIP 56199 |
14.75 |
| 2026-02-06 12:00 |
11:29:41.60 |
+62:58:56.1 |
HIP 56199 |
14.75 |
| 2026-02-07 00:00 |
11:29:36.46 |
+62:59:28.1 |
HIP 56199 |
14.80 |
| 2026-02-07 12:00 |
11:29:31.28 |
+62:59:59.8 |
HIP 56199 |
14.90 |
| 2026-02-08 00:00 |
11:29:26.06 |
+63:00:31.2 |
HIP 56199 |
15.04 |
| 2026-02-08 12:00 |
11:29:20.81 |
+63:01:02.3 |
HIP 56199 |
15.23 |
| 2026-02-09 00:00 |
11:29:15.52 |
+63:01:33.1 |
HIP 56199 |
15.46 |
| 2026-02-09 12:00 |
11:29:10.20 |
+63:02:03.6 |
HIP 56199 |
15.73 |
| 2026-02-10 00:00 |
11:29:04.85 |
+63:02:33.8 |
HIP 55859 |
15.42 |
| 2026-02-10 12:00 |
11:28:59.46 |
+63:03:03.7 |
HIP 55859 |
14.70 |
| 2026-02-11 00:00 |
11:28:54.04 |
+63:03:33.3 |
HIP 55859 |
13.97 |
| 2026-02-11 12:00 |
11:28:48.58 |
+63:04:02.6 |
HIP 55859 |
13.26 |
| 2026-02-12 00:00 |
11:28:43.10 |
+63:04:31.6 |
HIP 55859 |
12.55 |
| 2026-02-12 12:00 |
11:28:37.58 |
+63:05:00.2 |
HIP 55859 |
11.85 |
| 2026-02-13 00:00 |
11:28:32.03 |
+63:05:28.6 |
HIP 55859 |
11.15 |
| 2026-02-13 12:00 |
11:28:26.45 |
+63:05:56.6 |
HIP 55859 |
10.47 |
| 2026-02-14 00:00 |
11:28:20.84 |
+63:06:24.3 |
HIP 55859 |
9.80 |
| 2026-02-14 12:00 |
11:28:15.20 |
+63:06:51.7 |
HIP 55859 |
9.14 |
| 2026-02-15 00:00 |
11:28:09.53 |
+63:07:18.8 |
HIP 55859 |
8.50 |
| 2026-02-15 12:00 |
11:28:03.84 |
+63:07:45.5 |
HIP 55859 |
7.89 |
| 2026-02-16 00:00 |
11:27:58.11 |
+63:08:11.9 |
HIP 55859 |
7.31 |
| 2026-02-16 12:00 |
11:27:52.36 |
+63:08:38.0 |
HIP 55859 |
6.76 |
| 2026-02-17 00:00 |
11:27:46.58 |
+63:09:03.7 |
HIP 55859 |
6.25 |
| 2026-02-17 12:00 |
11:27:40.78 |
+63:09:29.1 |
HIP 55859 |
5.81 |
| 2026-02-18 00:00 |
11:27:34.95 |
+63:09:54.2 |
HIP 55859 |
5.43 |
| 2026-02-18 12:00 |
11:27:29.10 |
+63:10:18.9 |
HIP 55859 |
5.14 |
| 2026-02-19 00:00 |
11:27:23.22 |
+63:10:43.2 |
HIP 55859 |
4.95 |
| 2026-02-19 12:00 |
11:27:17.32 |
+63:11:07.2 |
HIP 55859 |
4.87 |
| 2026-02-20 00:00 |
11:27:11.39 |
+63:11:30.9 |
HIP 55859 |
4.91 |
| 2026-02-20 12:00 |
11:27:05.45 |
+63:11:54.2 |
HIP 55859 |
5.07 |
| 2026-02-21 00:00 |
11:26:59.48 |
+63:12:17.2 |
HIP 55859 |
5.32 |
| 2026-02-21 12:00 |
11:26:53.49 |
+63:12:39.8 |
HIP 55859 |
5.67 |
| 2026-02-22 00:00 |
11:26:47.48 |
+63:13:02.0 |
HIP 55859 |
6.09 |
| 2026-02-22 12:00 |
11:26:41.45 |
+63:13:23.9 |
HIP 55859 |
6.57 |
| 2026-02-23 00:00 |
11:26:35.40 |
+63:13:45.4 |
HIP 55859 |
7.09 |
| 2026-02-23 12:00 |
11:26:29.33 |
+63:14:06.5 |
HIP 55859 |
7.65 |
| 2026-02-24 00:00 |
11:26:23.25 |
+63:14:27.3 |
HIP 55859 |
8.24 |