メタデータ
| 項目 |
値 |
| Designation |
C/2006 L1 (Garradd) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-10-18T00:03:47.067840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:58Z |
| Obs used |
706 |
| NEO |
- |
| M1 |
8.700 |
| K1 |
21.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2006-12-13.0000000 |
| e |
0.99734388 |
| q (au) |
1.462070 |
| a (au) |
550.453473 |
| i (deg) |
143.242586 |
| Ω (om, deg) |
101.760169 |
| ω (w, deg) |
338.409780 |
| M (ma, deg) |
0.004274 |
等級
散乱 + 全体線形
$$
M_a = (9.687 + 5.938\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.687 |
| n |
5.938 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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 |
| 2006-06-04 |
2006-10-17 |
+8.2549 |
-2.682 |
| 2006-10-19 |
2006-12-20 |
+22.8632 |
-6.327 |
| 2006-12-20 |
2007-03-14 |
-11.8648 |
+2.378 |
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 |
21:01:30.39 |
+08:29:55.5 |
HIP 103686 |
21.36 |
| 2026-05-12 12:00 |
21:01:29.90 |
+08:30:11.7 |
HIP 103686 |
21.51 |
| 2026-05-13 00:00 |
21:01:29.39 |
+08:30:27.8 |
HIP 103686 |
21.66 |
| 2026-05-13 12:00 |
21:01:28.85 |
+08:30:43.7 |
HIP 103686 |
21.80 |
| 2026-05-14 00:00 |
21:01:28.28 |
+08:30:59.6 |
HIP 103686 |
21.94 |
| 2026-05-14 12:00 |
21:01:27.69 |
+08:31:15.3 |
HIP 103686 |
22.08 |
| 2026-05-15 00:00 |
21:01:27.08 |
+08:31:30.9 |
HIP 103686 |
22.22 |
| 2026-05-15 12:00 |
21:01:26.44 |
+08:31:46.3 |
HIP 103686 |
22.36 |
| 2026-05-16 00:00 |
21:01:25.77 |
+08:32:01.7 |
HIP 103686 |
22.49 |
| 2026-05-16 12:00 |
21:01:25.08 |
+08:32:16.9 |
HIP 103686 |
22.62 |
| 2026-05-17 00:00 |
21:01:24.37 |
+08:32:31.9 |
HIP 103686 |
22.76 |
| 2026-05-17 12:00 |
21:01:23.63 |
+08:32:46.9 |
HIP 103686 |
22.89 |
| 2026-05-18 00:00 |
21:01:22.87 |
+08:33:01.7 |
HIP 103686 |
23.01 |
| 2026-05-18 12:00 |
21:01:22.08 |
+08:33:16.4 |
HIP 103686 |
23.14 |
| 2026-05-19 00:00 |
21:01:21.27 |
+08:33:31.0 |
HIP 103686 |
23.27 |
| 2026-05-19 12:00 |
21:01:20.44 |
+08:33:45.4 |
HIP 103686 |
23.39 |
| 2026-05-20 00:00 |
21:01:19.58 |
+08:33:59.7 |
HIP 103686 |
23.52 |
| 2026-05-20 12:00 |
21:01:18.69 |
+08:34:13.9 |
HIP 103686 |
23.64 |
| 2026-05-21 00:00 |
21:01:17.79 |
+08:34:27.9 |
HIP 103686 |
23.76 |
| 2026-05-21 12:00 |
21:01:16.85 |
+08:34:41.8 |
HIP 103686 |
23.89 |
| 2026-05-22 00:00 |
21:01:15.90 |
+08:34:55.5 |
HIP 103686 |
24.01 |
| 2026-05-22 12:00 |
21:01:14.92 |
+08:35:09.1 |
HIP 103686 |
24.13 |
| 2026-05-23 00:00 |
21:01:13.91 |
+08:35:22.5 |
HIP 103686 |
24.25 |
| 2026-05-23 12:00 |
21:01:12.89 |
+08:35:35.9 |
HIP 103686 |
24.37 |
| 2026-05-24 00:00 |
21:01:11.83 |
+08:35:49.0 |
HIP 103686 |
24.49 |
| 2026-05-24 12:00 |
21:01:10.76 |
+08:36:02.1 |
HIP 103686 |
24.61 |
| 2026-05-25 00:00 |
21:01:09.66 |
+08:36:14.9 |
HIP 103686 |
24.73 |
| 2026-05-25 12:00 |
21:01:08.54 |
+08:36:27.7 |
HIP 103686 |
24.85 |
| 2026-05-26 00:00 |
21:01:07.39 |
+08:36:40.3 |
HIP 103686 |
24.97 |
| 2026-05-26 12:00 |
21:01:06.23 |
+08:36:52.7 |
HIP 103686 |
25.09 |
| 2026-05-27 00:00 |
21:01:05.03 |
+08:37:05.0 |
HIP 103686 |
25.21 |
| 2026-05-27 12:00 |
21:01:03.82 |
+08:37:17.1 |
HIP 103686 |
25.34 |
| 2026-05-28 00:00 |
21:01:02.58 |
+08:37:29.1 |
HIP 103686 |
25.46 |
| 2026-05-28 12:00 |
21:01:01.32 |
+08:37:41.0 |
HIP 103686 |
25.59 |
| 2026-05-29 00:00 |
21:01:00.04 |
+08:37:52.6 |
HIP 103586 |
25.42 |
| 2026-05-29 12:00 |
21:00:58.73 |
+08:38:04.2 |
HIP 103586 |
25.10 |
| 2026-05-30 00:00 |
21:00:57.40 |
+08:38:15.5 |
HIP 103586 |
24.77 |
| 2026-05-30 12:00 |
21:00:56.05 |
+08:38:26.8 |
HIP 103586 |
24.43 |
| 2026-05-31 00:00 |
21:00:54.67 |
+08:38:37.8 |
HIP 103586 |
24.10 |
| 2026-05-31 12:00 |
21:00:53.27 |
+08:38:48.7 |
HIP 103586 |
23.76 |
| 2026-06-01 00:00 |
21:00:51.86 |
+08:38:59.5 |
HIP 103586 |
23.41 |
| 2026-06-01 12:00 |
21:00:50.41 |
+08:39:10.1 |
HIP 103586 |
23.06 |
| 2026-06-02 00:00 |
21:00:48.95 |
+08:39:20.5 |
HIP 103586 |
22.70 |