C/2006 U7 (Gibbs)
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) |
| 2026-02-03 00:00 |
16:25:12.47 |
-22:40:05.7 |
HIP 80374 |
10.96 |
| 2026-02-03 12:00 |
16:25:15.98 |
-22:40:16.5 |
HIP 80374 |
11.78 |
| 2026-02-04 00:00 |
16:25:19.44 |
-22:40:27.3 |
HIP 80374 |
12.59 |
| 2026-02-04 12:00 |
16:25:22.84 |
-22:40:37.9 |
HIP 80374 |
13.39 |
| 2026-02-05 00:00 |
16:25:26.20 |
-22:40:48.4 |
HIP 80374 |
14.18 |
| 2026-02-05 12:00 |
16:25:29.51 |
-22:40:58.9 |
HIP 80374 |
14.96 |
| 2026-02-06 00:00 |
16:25:32.78 |
-22:41:09.2 |
HIP 80374 |
15.73 |
| 2026-02-06 12:00 |
16:25:35.99 |
-22:41:19.4 |
HIP 80374 |
16.48 |
| 2026-02-07 00:00 |
16:25:39.15 |
-22:41:29.5 |
HIP 80374 |
17.23 |
| 2026-02-07 12:00 |
16:25:42.26 |
-22:41:39.5 |
HIP 80374 |
17.96 |
| 2026-02-08 00:00 |
16:25:45.33 |
-22:41:49.4 |
HIP 80374 |
18.68 |
| 2026-02-08 12:00 |
16:25:48.34 |
-22:41:59.2 |
HIP 80374 |
19.39 |
| 2026-02-09 00:00 |
16:25:51.30 |
-22:42:08.9 |
HIP 80374 |
20.09 |
| 2026-02-09 12:00 |
16:25:54.21 |
-22:42:18.4 |
HIP 80374 |
20.78 |
| 2026-02-10 00:00 |
16:25:57.07 |
-22:42:27.9 |
HIP 80374 |
21.45 |
| 2026-02-10 12:00 |
16:25:59.88 |
-22:42:37.2 |
HIP 80374 |
22.12 |
| 2026-02-11 00:00 |
16:26:02.64 |
-22:42:46.4 |
HIP 80374 |
22.77 |
| 2026-02-11 12:00 |
16:26:05.34 |
-22:42:55.5 |
HIP 80374 |
23.41 |
| 2026-02-12 00:00 |
16:26:07.99 |
-22:43:04.6 |
HIP 80374 |
24.04 |
| 2026-02-12 12:00 |
16:26:10.60 |
-22:43:13.4 |
HIP 80632 |
24.30 |
| 2026-02-13 00:00 |
16:26:13.14 |
-22:43:22.2 |
HIP 80632 |
23.79 |
| 2026-02-13 12:00 |
16:26:15.64 |
-22:43:30.9 |
HIP 80632 |
23.29 |
| 2026-02-14 00:00 |
16:26:18.08 |
-22:43:39.4 |
HIP 80632 |
22.81 |
| 2026-02-14 12:00 |
16:26:20.48 |
-22:43:47.9 |
HIP 80632 |
22.34 |
| 2026-02-15 00:00 |
16:26:22.81 |
-22:43:56.2 |
HIP 80632 |
21.89 |
| 2026-02-15 12:00 |
16:26:25.10 |
-22:44:04.4 |
HIP 80632 |
21.46 |
| 2026-02-16 00:00 |
16:26:27.33 |
-22:44:12.5 |
HIP 80632 |
21.04 |
| 2026-02-16 12:00 |
16:26:29.51 |
-22:44:20.5 |
HIP 80632 |
20.64 |
| 2026-02-17 00:00 |
16:26:31.63 |
-22:44:28.3 |
HIP 80632 |
20.25 |
| 2026-02-17 12:00 |
16:26:33.70 |
-22:44:36.1 |
HIP 80632 |
19.88 |
| 2026-02-18 00:00 |
16:26:35.71 |
-22:44:43.7 |
HIP 80632 |
19.52 |
| 2026-02-18 12:00 |
16:26:37.67 |
-22:44:51.2 |
HIP 80632 |
19.18 |
| 2026-02-19 00:00 |
16:26:39.58 |
-22:44:58.6 |
HIP 80632 |
18.85 |
| 2026-02-19 12:00 |
16:26:41.43 |
-22:45:05.9 |
HIP 80632 |
18.54 |
| 2026-02-20 00:00 |
16:26:43.23 |
-22:45:13.1 |
HIP 80632 |
18.25 |
| 2026-02-20 12:00 |
16:26:44.97 |
-22:45:20.1 |
HIP 80632 |
17.97 |
| 2026-02-21 00:00 |
16:26:46.66 |
-22:45:27.0 |
HIP 80632 |
17.70 |
| 2026-02-21 12:00 |
16:26:48.29 |
-22:45:33.8 |
HIP 80632 |
17.46 |
| 2026-02-22 00:00 |
16:26:49.87 |
-22:45:40.5 |
HIP 80632 |
17.22 |
| 2026-02-22 12:00 |
16:26:51.39 |
-22:45:47.1 |
HIP 80632 |
17.00 |
| 2026-02-23 00:00 |
16:26:52.86 |
-22:45:53.6 |
HIP 80632 |
16.79 |
| 2026-02-23 12:00 |
16:26:54.27 |
-22:46:00.0 |
HIP 80632 |
16.60 |
| 2026-02-24 00:00 |
16:26:55.62 |
-22:46:06.1 |
HIP 80632 |
16.42 |