メタデータ
| 項目 |
値 |
| Designation |
C/2006 U7 (Gibbs) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-03-28T01:18:43.738560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:01Z |
| Obs used |
59 |
| NEO |
- |
| M1 |
11.600 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2006-11-14.0000000 |
| e |
0.63067072 |
| q (au) |
4.425542 |
| a (au) |
11.982647 |
| i (deg) |
7.230080 |
| Ω (om, deg) |
57.761042 |
| ω (w, deg) |
12.898865 |
| M (ma, deg) |
356.814652 |
等級
散乱 + 全体線形
$$
M_a = (8.419 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.419 |
| n |
6.000 |
| gf |
0.998 |
| gb |
-0.928 |
| k |
1.000 |
| δ90 |
1.022 |
| 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) |
| 2026-05-12 00:00 |
16:20:14.77 |
-22:38:33.3 |
HIP 80088 |
8.69 |
| 2026-05-12 12:00 |
16:20:09.24 |
-22:38:22.4 |
HIP 80088 |
9.85 |
| 2026-05-13 00:00 |
16:20:03.69 |
-22:38:11.5 |
HIP 80088 |
11.04 |
| 2026-05-13 12:00 |
16:19:58.13 |
-22:38:00.6 |
HIP 80088 |
12.26 |
| 2026-05-14 00:00 |
16:19:52.55 |
-22:37:49.6 |
HIP 80088 |
13.49 |
| 2026-05-14 12:00 |
16:19:46.96 |
-22:37:38.5 |
HIP 80088 |
14.74 |
| 2026-05-15 00:00 |
16:19:41.35 |
-22:37:27.3 |
HIP 79931 |
14.11 |
| 2026-05-15 12:00 |
16:19:35.73 |
-22:37:16.1 |
HIP 79931 |
13.19 |
| 2026-05-16 00:00 |
16:19:30.09 |
-22:37:04.8 |
HIP 79931 |
12.34 |
| 2026-05-16 12:00 |
16:19:24.44 |
-22:36:53.5 |
HIP 79931 |
11.58 |
| 2026-05-17 00:00 |
16:19:18.78 |
-22:36:42.1 |
HIP 79931 |
10.93 |
| 2026-05-17 12:00 |
16:19:13.11 |
-22:36:30.6 |
HIP 79931 |
10.40 |
| 2026-05-18 00:00 |
16:19:07.43 |
-22:36:19.1 |
HIP 79931 |
10.02 |
| 2026-05-18 12:00 |
16:19:01.73 |
-22:36:07.6 |
HIP 79931 |
9.80 |
| 2026-05-19 00:00 |
16:18:56.03 |
-22:35:56.0 |
HIP 79931 |
9.76 |
| 2026-05-19 12:00 |
16:18:50.32 |
-22:35:44.3 |
HIP 79931 |
9.91 |
| 2026-05-20 00:00 |
16:18:44.60 |
-22:35:32.6 |
HIP 79931 |
10.23 |
| 2026-05-20 12:00 |
16:18:38.87 |
-22:35:20.8 |
HIP 79931 |
10.70 |
| 2026-05-21 00:00 |
16:18:33.13 |
-22:35:09.0 |
HIP 79931 |
11.32 |
| 2026-05-21 12:00 |
16:18:27.39 |
-22:34:57.2 |
HIP 79931 |
12.06 |
| 2026-05-22 00:00 |
16:18:21.64 |
-22:34:45.3 |
HIP 79931 |
12.89 |
| 2026-05-22 12:00 |
16:18:15.88 |
-22:34:33.3 |
HIP 79931 |
13.81 |
| 2026-05-23 00:00 |
16:18:10.12 |
-22:34:21.4 |
HIP 79931 |
14.79 |
| 2026-05-23 12:00 |
16:18:04.36 |
-22:34:09.3 |
HIP 79931 |
15.83 |
| 2026-05-24 00:00 |
16:17:58.59 |
-22:33:57.3 |
HIP 79931 |
16.91 |
| 2026-05-24 12:00 |
16:17:52.82 |
-22:33:45.2 |
HIP 79931 |
18.03 |
| 2026-05-25 00:00 |
16:17:47.04 |
-22:33:33.0 |
HIP 79931 |
19.18 |
| 2026-05-25 12:00 |
16:17:41.26 |
-22:33:20.8 |
HIP 79931 |
20.35 |
| 2026-05-26 00:00 |
16:17:35.48 |
-22:33:08.6 |
HIP 79931 |
21.54 |
| 2026-05-26 12:00 |
16:17:29.70 |
-22:32:56.4 |
HIP 79931 |
22.76 |
| 2026-05-27 00:00 |
16:17:23.92 |
-22:32:44.1 |
HIP 79931 |
23.99 |
| 2026-05-27 12:00 |
16:17:18.14 |
-22:32:31.8 |
HIP 79931 |
25.23 |
| 2026-05-28 00:00 |
16:17:12.35 |
-22:32:19.5 |
HIP 79676 |
26.33 |
| 2026-05-28 12:00 |
16:17:06.57 |
-22:32:07.1 |
HIP 79676 |
25.42 |
| 2026-05-29 00:00 |
16:17:00.79 |
-22:31:54.7 |
HIP 79676 |
24.56 |
| 2026-05-29 12:00 |
16:16:55.01 |
-22:31:42.3 |
HIP 79676 |
23.74 |
| 2026-05-30 00:00 |
16:16:49.23 |
-22:31:29.8 |
HIP 79676 |
22.96 |
| 2026-05-30 12:00 |
16:16:43.46 |
-22:31:17.4 |
HIP 79676 |
22.25 |
| 2026-05-31 00:00 |
16:16:37.69 |
-22:31:04.9 |
HIP 79676 |
21.60 |
| 2026-05-31 12:00 |
16:16:31.92 |
-22:30:52.3 |
HIP 79676 |
21.01 |
| 2026-06-01 00:00 |
16:16:26.16 |
-22:30:39.8 |
HIP 79676 |
20.49 |
| 2026-06-01 12:00 |
16:16:20.40 |
-22:30:27.2 |
HIP 79676 |
20.06 |
| 2026-06-02 00:00 |
16:16:14.65 |
-22:30:14.7 |
HIP 79676 |
19.70 |