メタデータ
| 項目 |
値 |
| Designation |
C/2007 T5 (Gibbs) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-05-24T05:40:47.795520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:13Z |
| Obs used |
285 |
| NEO |
- |
| M1 |
12.800 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2008-01-26.0000000 |
| e |
0.91362737 |
| q (au) |
4.049258 |
| a (au) |
46.881263 |
| i (deg) |
45.615235 |
| Ω (om, deg) |
109.843075 |
| ω (w, deg) |
34.416471 |
| M (ma, deg) |
359.633887 |
等級
散乱 + 全体線形
$$
M_a = (10.741 + 2.562\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.741 |
| n |
2.562 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
19:31:31.15 |
-21:55:34.1 |
HIP 95895 |
19.19 |
| 2026-06-01 12:00 |
19:31:28.39 |
-21:55:43.8 |
HIP 95895 |
18.54 |
| 2026-06-02 00:00 |
19:31:25.61 |
-21:55:53.7 |
HIP 95895 |
17.87 |
| 2026-06-02 12:00 |
19:31:22.81 |
-21:56:03.5 |
HIP 95895 |
17.21 |
| 2026-06-03 00:00 |
19:31:19.99 |
-21:56:13.4 |
HIP 95895 |
16.53 |
| 2026-06-03 12:00 |
19:31:17.14 |
-21:56:23.4 |
HIP 95895 |
15.86 |
| 2026-06-04 00:00 |
19:31:14.27 |
-21:56:33.4 |
HIP 95895 |
15.17 |
| 2026-06-04 12:00 |
19:31:11.38 |
-21:56:43.5 |
HIP 95895 |
14.49 |
| 2026-06-05 00:00 |
19:31:08.47 |
-21:56:53.6 |
HIP 95895 |
13.80 |
| 2026-06-05 12:00 |
19:31:05.53 |
-21:57:03.7 |
HIP 95895 |
13.10 |
| 2026-06-06 00:00 |
19:31:02.58 |
-21:57:13.9 |
HIP 95895 |
12.40 |
| 2026-06-06 12:00 |
19:30:59.60 |
-21:57:24.1 |
HIP 95895 |
11.69 |
| 2026-06-07 00:00 |
19:30:56.60 |
-21:57:34.4 |
HIP 95895 |
10.98 |
| 2026-06-07 12:00 |
19:30:53.59 |
-21:57:44.7 |
HIP 95895 |
10.27 |
| 2026-06-08 00:00 |
19:30:50.55 |
-21:57:55.0 |
HIP 95895 |
9.55 |
| 2026-06-08 12:00 |
19:30:47.49 |
-21:58:05.4 |
HIP 95895 |
8.83 |
| 2026-06-09 00:00 |
19:30:44.41 |
-21:58:15.8 |
HIP 95895 |
8.11 |
| 2026-06-09 12:00 |
19:30:41.31 |
-21:58:26.3 |
HIP 95895 |
7.39 |
| 2026-06-10 00:00 |
19:30:38.20 |
-21:58:36.7 |
HIP 95895 |
6.66 |
| 2026-06-10 12:00 |
19:30:35.06 |
-21:58:47.3 |
HIP 95895 |
5.93 |
| 2026-06-11 00:00 |
19:30:31.91 |
-21:58:57.8 |
HIP 95895 |
5.21 |
| 2026-06-11 12:00 |
19:30:28.73 |
-21:59:08.5 |
HIP 95895 |
4.49 |
| 2026-06-12 00:00 |
19:30:25.54 |
-21:59:19.1 |
HIP 95895 |
3.78 |
| 2026-06-12 12:00 |
19:30:22.33 |
-21:59:29.8 |
HIP 95895 |
3.09 |
| 2026-06-13 00:00 |
19:30:19.10 |
-21:59:40.5 |
HIP 95895 |
2.44 |
| 2026-06-13 12:00 |
19:30:15.85 |
-21:59:51.2 |
HIP 95895 |
1.89 |
| 2026-06-14 00:00 |
19:30:12.59 |
-22:00:02.0 |
HIP 95895 |
1.53 |
| 2026-06-14 12:00 |
19:30:09.31 |
-22:00:12.8 |
HIP 95895 |
1.53 |
| 2026-06-15 00:00 |
19:30:06.01 |
-22:00:23.6 |
HIP 95895 |
1.89 |
| 2026-06-15 12:00 |
19:30:02.70 |
-22:00:34.5 |
HIP 95895 |
2.46 |
| 2026-06-16 00:00 |
19:29:59.37 |
-22:00:45.4 |
HIP 95895 |
3.13 |
| 2026-06-16 12:00 |
19:29:56.03 |
-22:00:56.3 |
HIP 95895 |
3.85 |
| 2026-06-17 00:00 |
19:29:52.66 |
-22:01:07.3 |
HIP 95895 |
4.60 |
| 2026-06-17 12:00 |
19:29:49.29 |
-22:01:18.2 |
HIP 95895 |
5.36 |
| 2026-06-18 00:00 |
19:29:45.90 |
-22:01:29.3 |
HIP 95895 |
6.14 |
| 2026-06-18 12:00 |
19:29:42.49 |
-22:01:40.3 |
HIP 95895 |
6.93 |
| 2026-06-19 00:00 |
19:29:39.07 |
-22:01:51.3 |
HIP 95895 |
7.73 |
| 2026-06-19 12:00 |
19:29:35.64 |
-22:02:02.4 |
HIP 95895 |
8.53 |
| 2026-06-20 00:00 |
19:29:32.19 |
-22:02:13.5 |
HIP 95895 |
9.34 |
| 2026-06-20 12:00 |
19:29:28.73 |
-22:02:24.7 |
HIP 95895 |
10.15 |
| 2026-06-21 00:00 |
19:29:25.26 |
-22:02:35.8 |
HIP 95895 |
10.97 |
| 2026-06-21 12:00 |
19:29:21.77 |
-22:02:47.0 |
HIP 95895 |
11.79 |
| 2026-06-22 00:00 |
19:29:18.27 |
-22:02:58.2 |
HIP 95895 |
12.62 |