C/2006 B1 (McNaught)
メタデータ
| 項目 |
値 |
| Designation |
C/2006 B1 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-11-19T12:22:21.066240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:56Z |
| Obs used |
184 |
| NEO |
- |
| M1 |
13.300 |
| 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) |
2006-04-29.0000000 |
| e |
0.99776536 |
| q (au) |
2.997591 |
| a (au) |
1341.421761 |
| i (deg) |
134.281929 |
| Ω (om, deg) |
161.239384 |
| ω (w, deg) |
302.491743 |
| M (ma, deg) |
0.003220 |
等級
散乱 + 全体線形
$$
M_a = (13.124 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.124 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.908 |
| k |
0.999 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
03:22:31.68 |
+66:43:12.9 |
HIP 15604 |
14.84 |
| 2026-02-03 12:00 |
03:22:30.02 |
+66:42:36.1 |
HIP 15604 |
15.22 |
| 2026-02-04 00:00 |
03:22:28.42 |
+66:41:59.4 |
HIP 15604 |
15.62 |
| 2026-02-04 12:00 |
03:22:26.90 |
+66:41:22.7 |
HIP 15604 |
16.04 |
| 2026-02-05 00:00 |
03:22:25.44 |
+66:40:46.0 |
HIP 15604 |
16.47 |
| 2026-02-05 12:00 |
03:22:24.04 |
+66:40:09.4 |
HIP 15604 |
16.92 |
| 2026-02-06 00:00 |
03:22:22.72 |
+66:39:32.9 |
HIP 15604 |
17.38 |
| 2026-02-06 12:00 |
03:22:21.46 |
+66:38:56.3 |
HIP 15604 |
17.86 |
| 2026-02-07 00:00 |
03:22:20.27 |
+66:38:19.9 |
HIP 15604 |
18.34 |
| 2026-02-07 12:00 |
03:22:19.15 |
+66:37:43.4 |
HIP 15604 |
18.84 |
| 2026-02-08 00:00 |
03:22:18.09 |
+66:37:07.1 |
HIP 15604 |
19.34 |
| 2026-02-08 12:00 |
03:22:17.10 |
+66:36:30.8 |
HIP 15604 |
19.85 |
| 2026-02-09 00:00 |
03:22:16.18 |
+66:35:54.5 |
HIP 15604 |
20.37 |
| 2026-02-09 12:00 |
03:22:15.32 |
+66:35:18.4 |
HIP 15604 |
20.90 |
| 2026-02-10 00:00 |
03:22:14.53 |
+66:34:42.3 |
HIP 15604 |
21.43 |
| 2026-02-10 12:00 |
03:22:13.81 |
+66:34:06.2 |
HIP 15604 |
21.97 |
| 2026-02-11 00:00 |
03:22:13.15 |
+66:33:30.3 |
HIP 15755 |
22.00 |
| 2026-02-11 12:00 |
03:22:12.56 |
+66:32:54.4 |
HIP 15755 |
21.42 |
| 2026-02-12 00:00 |
03:22:12.04 |
+66:32:18.5 |
HIP 15755 |
20.85 |
| 2026-02-12 12:00 |
03:22:11.59 |
+66:31:42.8 |
HIP 15755 |
20.28 |
| 2026-02-13 00:00 |
03:22:11.20 |
+66:31:07.2 |
HIP 15755 |
19.71 |
| 2026-02-13 12:00 |
03:22:10.87 |
+66:30:31.6 |
HIP 15755 |
19.15 |
| 2026-02-14 00:00 |
03:22:10.61 |
+66:29:56.1 |
HIP 15755 |
18.58 |
| 2026-02-14 12:00 |
03:22:10.42 |
+66:29:20.8 |
HIP 15755 |
18.02 |
| 2026-02-15 00:00 |
03:22:10.30 |
+66:28:45.5 |
HIP 15755 |
17.45 |
| 2026-02-15 12:00 |
03:22:10.24 |
+66:28:10.3 |
HIP 15755 |
16.89 |
| 2026-02-16 00:00 |
03:22:10.24 |
+66:27:35.2 |
HIP 15755 |
16.33 |
| 2026-02-16 12:00 |
03:22:10.31 |
+66:27:00.2 |
HIP 15755 |
15.77 |
| 2026-02-17 00:00 |
03:22:10.45 |
+66:26:25.4 |
HIP 15755 |
15.22 |
| 2026-02-17 12:00 |
03:22:10.65 |
+66:25:50.6 |
HIP 15755 |
14.66 |
| 2026-02-18 00:00 |
03:22:10.92 |
+66:25:15.9 |
HIP 15755 |
14.11 |
| 2026-02-18 12:00 |
03:22:11.25 |
+66:24:41.4 |
HIP 15755 |
13.55 |
| 2026-02-19 00:00 |
03:22:11.64 |
+66:24:07.0 |
HIP 15755 |
13.00 |
| 2026-02-19 12:00 |
03:22:12.10 |
+66:23:32.7 |
HIP 15755 |
12.45 |
| 2026-02-20 00:00 |
03:22:12.63 |
+66:22:58.5 |
HIP 15755 |
11.91 |
| 2026-02-20 12:00 |
03:22:13.21 |
+66:22:24.4 |
HIP 15755 |
11.36 |
| 2026-02-21 00:00 |
03:22:13.86 |
+66:21:50.5 |
HIP 15755 |
10.82 |
| 2026-02-21 12:00 |
03:22:14.58 |
+66:21:16.7 |
HIP 15755 |
10.27 |
| 2026-02-22 00:00 |
03:22:15.36 |
+66:20:43.0 |
HIP 15755 |
9.73 |
| 2026-02-22 12:00 |
03:22:16.20 |
+66:20:09.5 |
HIP 15755 |
9.20 |
| 2026-02-23 00:00 |
03:22:17.10 |
+66:19:36.1 |
HIP 15755 |
8.66 |
| 2026-02-23 12:00 |
03:22:18.07 |
+66:19:02.9 |
HIP 15755 |
8.13 |
| 2026-02-24 00:00 |
03:22:19.09 |
+66:18:29.7 |
HIP 15755 |
7.60 |