C/2010 H1 (Garradd)
メタデータ
| 項目 |
値 |
| Designation |
C/2010 H1 (Garradd) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-06-18T21:49:15.484800Z |
| Orbit solution date (soln_date, UTC) |
2022-07-06T03:12:21Z |
| Obs used |
46 |
| NEO |
- |
| M1 |
9.500 |
| K1 |
17.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-05-03.0000000 |
| e |
0.99965781 |
| q (au) |
2.745494 |
| a (au) |
8023.335869 |
| i (deg) |
36.531182 |
| Ω (om, deg) |
347.383773 |
| ω (w, deg) |
233.823547 |
| M (ma, deg) |
359.999936 |
等級
散乱 + 全体線形
$$
M_a = (15.811 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.811 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.996 |
| 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 |
23:50:21.62 |
+11:37:50.6 |
HIP 117506 |
28.98 |
| 2026-02-03 12:00 |
23:50:24.21 |
+11:38:01.0 |
HIP 117506 |
29.36 |
| 2026-02-04 00:00 |
23:50:26.83 |
+11:38:11.6 |
HIP 117506 |
29.75 |
| 2026-02-04 12:00 |
23:50:29.46 |
+11:38:22.3 |
HIP 117506 |
30.16 |
| 2026-02-05 00:00 |
23:50:32.11 |
+11:38:33.3 |
HIP 117506 |
30.58 |
| 2026-02-05 12:00 |
23:50:34.77 |
+11:38:44.5 |
HIP 117506 |
31.01 |
| 2026-02-06 00:00 |
23:50:37.46 |
+11:38:55.8 |
HIP 117506 |
31.46 |
| 2026-02-06 12:00 |
23:50:40.16 |
+11:39:07.3 |
HIP 117506 |
31.91 |
| 2026-02-07 00:00 |
23:50:42.88 |
+11:39:19.1 |
HIP 117506 |
32.39 |
| 2026-02-07 12:00 |
23:50:45.62 |
+11:39:31.0 |
HIP 117506 |
32.87 |
| 2026-02-08 00:00 |
23:50:48.38 |
+11:39:43.1 |
HIP 117506 |
33.37 |
| 2026-02-08 12:00 |
23:50:51.15 |
+11:39:55.4 |
HIP 117506 |
33.88 |
| 2026-02-09 00:00 |
23:50:53.94 |
+11:40:07.8 |
HIP 117764 |
34.18 |
| 2026-02-09 12:00 |
23:50:56.75 |
+11:40:20.5 |
HIP 117764 |
33.47 |
| 2026-02-10 00:00 |
23:50:59.57 |
+11:40:33.3 |
HIP 117764 |
32.76 |
| 2026-02-10 12:00 |
23:51:02.41 |
+11:40:46.4 |
HIP 117764 |
32.04 |
| 2026-02-11 00:00 |
23:51:05.27 |
+11:40:59.6 |
HIP 117764 |
31.32 |
| 2026-02-11 12:00 |
23:51:08.14 |
+11:41:13.0 |
HIP 117764 |
30.59 |
| 2026-02-12 00:00 |
23:51:11.03 |
+11:41:26.6 |
HIP 117764 |
29.86 |
| 2026-02-12 12:00 |
23:51:13.93 |
+11:41:40.3 |
HIP 117764 |
29.13 |
| 2026-02-13 00:00 |
23:51:16.85 |
+11:41:54.3 |
HIP 117764 |
28.39 |
| 2026-02-13 12:00 |
23:51:19.78 |
+11:42:08.4 |
HIP 117764 |
27.65 |
| 2026-02-14 00:00 |
23:51:22.73 |
+11:42:22.7 |
HIP 117764 |
26.90 |
| 2026-02-14 12:00 |
23:51:25.70 |
+11:42:37.2 |
HIP 117764 |
26.15 |
| 2026-02-15 00:00 |
23:51:28.67 |
+11:42:51.8 |
HIP 117764 |
25.40 |
| 2026-02-15 12:00 |
23:51:31.67 |
+11:43:06.6 |
HIP 117764 |
24.64 |
| 2026-02-16 00:00 |
23:51:34.67 |
+11:43:21.6 |
HIP 117764 |
23.88 |
| 2026-02-16 12:00 |
23:51:37.70 |
+11:43:36.8 |
HIP 117764 |
23.11 |
| 2026-02-17 00:00 |
23:51:40.73 |
+11:43:52.2 |
HIP 117764 |
22.35 |
| 2026-02-17 12:00 |
23:51:43.78 |
+11:44:07.7 |
HIP 117764 |
21.58 |
| 2026-02-18 00:00 |
23:51:46.84 |
+11:44:23.4 |
HIP 117764 |
20.80 |
| 2026-02-18 12:00 |
23:51:49.91 |
+11:44:39.2 |
HIP 117764 |
20.03 |
| 2026-02-19 00:00 |
23:51:53.00 |
+11:44:55.3 |
HIP 117764 |
19.25 |
| 2026-02-19 12:00 |
23:51:56.10 |
+11:45:11.5 |
HIP 117764 |
18.47 |
| 2026-02-20 00:00 |
23:51:59.21 |
+11:45:27.8 |
HIP 117764 |
17.68 |
| 2026-02-20 12:00 |
23:52:02.33 |
+11:45:44.3 |
HIP 117764 |
16.90 |
| 2026-02-21 00:00 |
23:52:05.47 |
+11:46:01.0 |
HIP 117764 |
16.12 |
| 2026-02-21 12:00 |
23:52:08.62 |
+11:46:17.9 |
HIP 117764 |
15.33 |
| 2026-02-22 00:00 |
23:52:11.77 |
+11:46:34.9 |
HIP 117764 |
14.54 |
| 2026-02-22 12:00 |
23:52:14.94 |
+11:46:52.1 |
HIP 117764 |
13.76 |
| 2026-02-23 00:00 |
23:52:18.12 |
+11:47:09.4 |
HIP 117764 |
12.98 |
| 2026-02-23 12:00 |
23:52:21.31 |
+11:47:26.9 |
HIP 117764 |
12.19 |
| 2026-02-24 00:00 |
23:52:24.51 |
+11:47:44.5 |
HIP 117764 |
11.42 |