C/2006 L1 (Garradd)
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) |
| 2026-02-03 00:00 |
20:56:20.25 |
+07:30:41.4 |
HIP 103309 |
12.41 |
| 2026-02-03 12:00 |
20:56:23.09 |
+07:30:52.2 |
HIP 103309 |
12.75 |
| 2026-02-04 00:00 |
20:56:25.93 |
+07:31:03.1 |
HIP 103309 |
13.13 |
| 2026-02-04 12:00 |
20:56:28.78 |
+07:31:14.1 |
HIP 103309 |
13.54 |
| 2026-02-05 00:00 |
20:56:31.62 |
+07:31:25.3 |
HIP 103309 |
13.97 |
| 2026-02-05 12:00 |
20:56:34.45 |
+07:31:36.7 |
HIP 103309 |
14.42 |
| 2026-02-06 00:00 |
20:56:37.29 |
+07:31:48.2 |
HIP 103309 |
14.89 |
| 2026-02-06 12:00 |
20:56:40.12 |
+07:31:59.9 |
HIP 103309 |
15.38 |
| 2026-02-07 00:00 |
20:56:42.95 |
+07:32:11.7 |
HIP 103309 |
15.88 |
| 2026-02-07 12:00 |
20:56:45.78 |
+07:32:23.7 |
HIP 103309 |
16.41 |
| 2026-02-08 00:00 |
20:56:48.61 |
+07:32:35.8 |
HIP 103309 |
16.94 |
| 2026-02-08 12:00 |
20:56:51.43 |
+07:32:48.1 |
HIP 103309 |
17.49 |
| 2026-02-09 00:00 |
20:56:54.25 |
+07:33:00.6 |
HIP 103309 |
18.04 |
| 2026-02-09 12:00 |
20:56:57.06 |
+07:33:13.2 |
HIP 103309 |
18.61 |
| 2026-02-10 00:00 |
20:56:59.87 |
+07:33:25.9 |
HIP 103309 |
19.19 |
| 2026-02-10 12:00 |
20:57:02.68 |
+07:33:38.8 |
HIP 103309 |
19.77 |
| 2026-02-11 00:00 |
20:57:05.48 |
+07:33:51.8 |
HIP 103309 |
20.37 |
| 2026-02-11 12:00 |
20:57:08.28 |
+07:34:05.0 |
HIP 103309 |
20.97 |
| 2026-02-12 00:00 |
20:57:11.07 |
+07:34:18.3 |
HIP 103309 |
21.57 |
| 2026-02-12 12:00 |
20:57:13.86 |
+07:34:31.7 |
HIP 103309 |
22.18 |
| 2026-02-13 00:00 |
20:57:16.64 |
+07:34:45.3 |
HIP 103309 |
22.80 |
| 2026-02-13 12:00 |
20:57:19.41 |
+07:34:59.1 |
HIP 103309 |
23.42 |
| 2026-02-14 00:00 |
20:57:22.19 |
+07:35:13.0 |
HIP 103309 |
24.04 |
| 2026-02-14 12:00 |
20:57:24.95 |
+07:35:27.0 |
HIP 103309 |
24.67 |
| 2026-02-15 00:00 |
20:57:27.71 |
+07:35:41.1 |
HIP 103309 |
25.30 |
| 2026-02-15 12:00 |
20:57:30.46 |
+07:35:55.4 |
HIP 103309 |
25.94 |
| 2026-02-16 00:00 |
20:57:33.21 |
+07:36:09.8 |
HIP 103309 |
26.57 |
| 2026-02-16 12:00 |
20:57:35.95 |
+07:36:24.4 |
HIP 103309 |
27.21 |
| 2026-02-17 00:00 |
20:57:38.68 |
+07:36:39.1 |
HIP 103483 |
27.58 |
| 2026-02-17 12:00 |
20:57:41.41 |
+07:36:53.9 |
HIP 103483 |
27.22 |
| 2026-02-18 00:00 |
20:57:44.13 |
+07:37:08.9 |
HIP 103483 |
26.87 |
| 2026-02-18 12:00 |
20:57:46.84 |
+07:37:23.9 |
HIP 103483 |
26.53 |
| 2026-02-19 00:00 |
20:57:49.54 |
+07:37:39.1 |
HIP 103483 |
26.21 |
| 2026-02-19 12:00 |
20:57:52.24 |
+07:37:54.5 |
HIP 103483 |
25.90 |
| 2026-02-20 00:00 |
20:57:54.93 |
+07:38:09.9 |
HIP 103483 |
25.60 |
| 2026-02-20 12:00 |
20:57:57.60 |
+07:38:25.5 |
HIP 103483 |
25.32 |
| 2026-02-21 00:00 |
20:58:00.27 |
+07:38:41.2 |
HIP 103483 |
25.05 |
| 2026-02-21 12:00 |
20:58:02.94 |
+07:38:57.0 |
HIP 103483 |
24.80 |
| 2026-02-22 00:00 |
20:58:05.59 |
+07:39:13.0 |
HIP 103483 |
24.57 |
| 2026-02-22 12:00 |
20:58:08.23 |
+07:39:29.0 |
HIP 103483 |
24.35 |
| 2026-02-23 00:00 |
20:58:10.87 |
+07:39:45.2 |
HIP 103483 |
24.15 |
| 2026-02-23 12:00 |
20:58:13.49 |
+07:40:01.5 |
HIP 103483 |
23.96 |
| 2026-02-24 00:00 |
20:58:16.10 |
+07:40:17.9 |
HIP 103483 |
23.79 |