メタデータ
| 項目 |
値 |
| Designation |
C/2007 Q1 (Garradd) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-12-11T05:36:50.662080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:11Z |
| Obs used |
45 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
16.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2007-09-02.0000000 |
| e |
1.00098762 |
| q (au) |
2.989255 |
| a (au) |
-3026.729908 |
| i (deg) |
82.007598 |
| Ω (om, deg) |
5.894732 |
| ω (w, deg) |
282.133141 |
| M (ma, deg) |
0.001567 |
等級
散乱 + 全体線形
$$
M_a = (7.386 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.386 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
21:38:39.66 |
+67:50:22.3 |
HIP 106966 |
18.71 |
| 2026-09-20 12:00 |
21:38:33.01 |
+67:49:55.7 |
HIP 106966 |
19.36 |
| 2026-09-21 00:00 |
21:38:26.39 |
+67:49:28.8 |
HIP 106966 |
20.01 |
| 2026-09-21 12:00 |
21:38:19.82 |
+67:49:01.6 |
HIP 106966 |
20.68 |
| 2026-09-22 00:00 |
21:38:13.29 |
+67:48:34.1 |
HIP 106966 |
21.35 |
| 2026-09-22 12:00 |
21:38:06.81 |
+67:48:06.3 |
HIP 106966 |
22.03 |
| 2026-09-23 00:00 |
21:38:00.37 |
+67:47:38.1 |
HIP 106966 |
22.73 |
| 2026-09-23 12:00 |
21:37:53.97 |
+67:47:09.6 |
HIP 106966 |
23.43 |
| 2026-09-24 00:00 |
21:37:47.62 |
+67:46:40.8 |
HIP 106966 |
24.13 |
| 2026-09-24 12:00 |
21:37:41.32 |
+67:46:11.7 |
HIP 106966 |
24.84 |
| 2026-09-25 00:00 |
21:37:35.06 |
+67:45:42.3 |
HIP 106966 |
25.56 |
| 2026-09-25 12:00 |
21:37:28.85 |
+67:45:12.6 |
HIP 106712 |
26.08 |
| 2026-09-26 00:00 |
21:37:22.69 |
+67:44:42.6 |
HIP 106712 |
26.52 |
| 2026-09-26 12:00 |
21:37:16.57 |
+67:44:12.3 |
HIP 106712 |
26.98 |
| 2026-09-27 00:00 |
21:37:10.50 |
+67:43:41.7 |
HIP 106712 |
27.46 |
| 2026-09-27 12:00 |
21:37:04.48 |
+67:43:10.8 |
HIP 106712 |
27.95 |
| 2026-09-28 00:00 |
21:36:58.51 |
+67:42:39.6 |
HIP 106712 |
28.46 |
| 2026-09-28 12:00 |
21:36:52.59 |
+67:42:08.1 |
HIP 106712 |
28.99 |
| 2026-09-29 00:00 |
21:36:46.72 |
+67:41:36.3 |
HIP 106712 |
29.53 |
| 2026-09-29 12:00 |
21:36:40.90 |
+67:41:04.3 |
HIP 106712 |
30.09 |
| 2026-09-30 00:00 |
21:36:35.13 |
+67:40:31.9 |
HIP 106757 |
29.96 |
| 2026-09-30 12:00 |
21:36:29.41 |
+67:39:59.3 |
HIP 106757 |
29.53 |
| 2026-10-01 00:00 |
21:36:23.74 |
+67:39:26.4 |
HIP 106757 |
29.11 |
| 2026-10-01 12:00 |
21:36:18.13 |
+67:38:53.2 |
HIP 106757 |
28.69 |
| 2026-10-02 00:00 |
21:36:12.56 |
+67:38:19.8 |
HIP 106757 |
28.29 |
| 2026-10-02 12:00 |
21:36:07.05 |
+67:37:46.1 |
HIP 106757 |
27.90 |
| 2026-10-03 00:00 |
21:36:01.60 |
+67:37:12.1 |
HIP 106757 |
27.52 |
| 2026-10-03 12:00 |
21:35:56.19 |
+67:36:37.8 |
HIP 106757 |
27.14 |
| 2026-10-04 00:00 |
21:35:50.84 |
+67:36:03.3 |
HIP 106757 |
26.78 |
| 2026-10-04 12:00 |
21:35:45.55 |
+67:35:28.5 |
HIP 106757 |
26.44 |
| 2026-10-05 00:00 |
21:35:40.30 |
+67:34:53.5 |
HIP 106757 |
26.10 |
| 2026-10-05 12:00 |
21:35:35.12 |
+67:34:18.2 |
HIP 106757 |
25.78 |
| 2026-10-06 00:00 |
21:35:29.99 |
+67:33:42.7 |
HIP 106757 |
25.47 |
| 2026-10-06 12:00 |
21:35:24.92 |
+67:33:06.9 |
HIP 106757 |
25.17 |
| 2026-10-07 00:00 |
21:35:19.90 |
+67:32:30.9 |
HIP 106757 |
24.89 |
| 2026-10-07 12:00 |
21:35:14.94 |
+67:31:54.7 |
HIP 106757 |
24.62 |
| 2026-10-08 00:00 |
21:35:10.03 |
+67:31:18.2 |
HIP 106757 |
24.37 |
| 2026-10-08 12:00 |
21:35:05.19 |
+67:30:41.4 |
HIP 106757 |
24.13 |
| 2026-10-09 00:00 |
21:35:00.40 |
+67:30:04.5 |
HIP 106757 |
23.91 |
| 2026-10-09 12:00 |
21:34:55.67 |
+67:29:27.3 |
HIP 106757 |
23.71 |
| 2026-10-10 00:00 |
21:34:51.00 |
+67:28:49.9 |
HIP 106757 |
23.52 |
| 2026-10-10 12:00 |
21:34:46.39 |
+67:28:12.3 |
HIP 106757 |
23.36 |
| 2026-10-11 00:00 |
21:34:41.83 |
+67:27:34.4 |
HIP 106757 |
23.21 |