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 |
-0.502 |
| 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) |
| 2026-05-12 00:00 |
19:33:00.23 |
-21:49:47.6 |
HIP 96096 |
21.43 |
| 2026-05-12 12:00 |
19:32:58.56 |
-21:49:55.0 |
HIP 96096 |
21.36 |
| 2026-05-13 00:00 |
19:32:56.85 |
-21:50:02.5 |
HIP 96096 |
21.29 |
| 2026-05-13 12:00 |
19:32:55.12 |
-21:50:10.1 |
HIP 96096 |
21.22 |
| 2026-05-14 00:00 |
19:32:53.35 |
-21:50:17.8 |
HIP 96096 |
21.17 |
| 2026-05-14 12:00 |
19:32:51.56 |
-21:50:25.5 |
HIP 96096 |
21.12 |
| 2026-05-15 00:00 |
19:32:49.74 |
-21:50:33.3 |
HIP 96096 |
21.07 |
| 2026-05-15 12:00 |
19:32:47.88 |
-21:50:41.2 |
HIP 96096 |
21.04 |
| 2026-05-16 00:00 |
19:32:46.00 |
-21:50:49.1 |
HIP 96096 |
21.01 |
| 2026-05-16 12:00 |
19:32:44.08 |
-21:50:57.1 |
HIP 96096 |
20.99 |
| 2026-05-17 00:00 |
19:32:42.14 |
-21:51:05.2 |
HIP 96096 |
20.99 |
| 2026-05-17 12:00 |
19:32:40.17 |
-21:51:13.3 |
HIP 96096 |
20.99 |
| 2026-05-18 00:00 |
19:32:38.17 |
-21:51:21.5 |
HIP 96096 |
21.00 |
| 2026-05-18 12:00 |
19:32:36.14 |
-21:51:29.7 |
HIP 96096 |
21.02 |
| 2026-05-19 00:00 |
19:32:34.08 |
-21:51:38.0 |
HIP 96096 |
21.05 |
| 2026-05-19 12:00 |
19:32:31.99 |
-21:51:46.4 |
HIP 96096 |
21.10 |
| 2026-05-20 00:00 |
19:32:29.87 |
-21:51:54.8 |
HIP 96096 |
21.16 |
| 2026-05-20 12:00 |
19:32:27.73 |
-21:52:03.3 |
HIP 96096 |
21.22 |
| 2026-05-21 00:00 |
19:32:25.56 |
-21:52:11.9 |
HIP 96096 |
21.31 |
| 2026-05-21 12:00 |
19:32:23.36 |
-21:52:20.5 |
HIP 96096 |
21.40 |
| 2026-05-22 00:00 |
19:32:21.13 |
-21:52:29.1 |
HIP 96096 |
21.51 |
| 2026-05-22 12:00 |
19:32:18.88 |
-21:52:37.9 |
HIP 96096 |
21.63 |
| 2026-05-23 00:00 |
19:32:16.60 |
-21:52:46.6 |
HIP 96096 |
21.77 |
| 2026-05-23 12:00 |
19:32:14.29 |
-21:52:55.5 |
HIP 96096 |
21.92 |
| 2026-05-24 00:00 |
19:32:11.96 |
-21:53:04.4 |
HIP 96096 |
22.08 |
| 2026-05-24 12:00 |
19:32:09.60 |
-21:53:13.4 |
HIP 96096 |
22.26 |
| 2026-05-25 00:00 |
19:32:07.21 |
-21:53:22.4 |
HIP 96096 |
22.45 |
| 2026-05-25 12:00 |
19:32:04.80 |
-21:53:31.4 |
HIP 96096 |
22.66 |
| 2026-05-26 00:00 |
19:32:02.36 |
-21:53:40.6 |
HIP 96096 |
22.88 |
| 2026-05-26 12:00 |
19:31:59.89 |
-21:53:49.7 |
HIP 96096 |
23.11 |
| 2026-05-27 00:00 |
19:31:57.40 |
-21:53:59.0 |
HIP 96096 |
23.36 |
| 2026-05-27 12:00 |
19:31:54.89 |
-21:54:08.2 |
HIP 96096 |
23.63 |
| 2026-05-28 00:00 |
19:31:52.35 |
-21:54:17.6 |
HIP 96096 |
23.91 |
| 2026-05-28 12:00 |
19:31:49.78 |
-21:54:27.0 |
HIP 95895 |
23.64 |
| 2026-05-29 00:00 |
19:31:47.19 |
-21:54:36.4 |
HIP 95895 |
23.02 |
| 2026-05-29 12:00 |
19:31:44.58 |
-21:54:45.9 |
HIP 95895 |
22.40 |
| 2026-05-30 00:00 |
19:31:41.94 |
-21:54:55.4 |
HIP 95895 |
21.77 |
| 2026-05-30 12:00 |
19:31:39.28 |
-21:55:05.0 |
HIP 95895 |
21.13 |
| 2026-05-31 00:00 |
19:31:36.59 |
-21:55:14.6 |
HIP 95895 |
20.49 |
| 2026-05-31 12:00 |
19:31:33.88 |
-21:55:24.3 |
HIP 95895 |
19.85 |
| 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 |