メタデータ
| 項目 |
値 |
| Designation |
P/2005 E1 (Tubbiolo) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2005-03-18T05:50:12.549120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:46Z |
| Obs used |
61 |
| NEO |
- |
| M1 |
10.700 |
| 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) |
2005-03-26.0000000 |
| e |
0.38473927 |
| q (au) |
4.445458 |
| a (au) |
7.225324 |
| i (deg) |
5.153002 |
| Ω (om, deg) |
4.415914 |
| ω (w, deg) |
170.792047 |
| M (ma, deg) |
0.393641 |
等級
散乱 + 全体線形
$$
M_a = (12.900 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.900 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-0.501 |
| 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 |
17:53:50.77 |
-28:08:17.1 |
HIP 87684 |
9.59 |
| 2026-05-12 12:00 |
17:53:40.82 |
-28:08:27.8 |
HIP 87684 |
11.79 |
| 2026-05-13 00:00 |
17:53:30.73 |
-28:08:38.3 |
HIP 87684 |
14.02 |
| 2026-05-13 12:00 |
17:53:20.50 |
-28:08:48.5 |
HIP 87684 |
16.28 |
| 2026-05-14 00:00 |
17:53:10.13 |
-28:08:58.5 |
HIP 87433 |
17.10 |
| 2026-05-14 12:00 |
17:52:59.62 |
-28:09:08.3 |
HIP 87433 |
15.15 |
| 2026-05-15 00:00 |
17:52:48.97 |
-28:09:17.8 |
HIP 87433 |
13.28 |
| 2026-05-15 12:00 |
17:52:38.19 |
-28:09:27.0 |
HIP 87433 |
11.58 |
| 2026-05-16 00:00 |
17:52:27.28 |
-28:09:36.0 |
HIP 87433 |
10.12 |
| 2026-05-16 12:00 |
17:52:16.24 |
-28:09:44.8 |
HIP 87433 |
9.07 |
| 2026-05-17 00:00 |
17:52:05.07 |
-28:09:53.3 |
HIP 87433 |
8.60 |
| 2026-05-17 12:00 |
17:51:53.78 |
-28:10:01.5 |
HIP 87433 |
8.82 |
| 2026-05-18 00:00 |
17:51:42.36 |
-28:10:09.5 |
HIP 87433 |
9.70 |
| 2026-05-18 12:00 |
17:51:30.81 |
-28:10:17.2 |
HIP 87433 |
11.11 |
| 2026-05-19 00:00 |
17:51:19.15 |
-28:10:24.6 |
HIP 87433 |
12.90 |
| 2026-05-19 12:00 |
17:51:07.36 |
-28:10:31.7 |
HIP 87433 |
14.93 |
| 2026-05-20 00:00 |
17:50:55.46 |
-28:10:38.6 |
HIP 87433 |
17.14 |
| 2026-05-20 12:00 |
17:50:43.44 |
-28:10:45.2 |
HIP 87433 |
19.47 |
| 2026-05-21 00:00 |
17:50:31.31 |
-28:10:51.5 |
HIP 87433 |
21.89 |
| 2026-05-21 12:00 |
17:50:19.07 |
-28:10:57.5 |
HIP 87433 |
24.39 |
| 2026-05-22 00:00 |
17:50:06.72 |
-28:11:03.2 |
HIP 87136 |
26.85 |
| 2026-05-22 12:00 |
17:49:54.27 |
-28:11:08.7 |
HIP 87136 |
24.37 |
| 2026-05-23 00:00 |
17:49:41.70 |
-28:11:13.8 |
HIP 87136 |
21.93 |
| 2026-05-23 12:00 |
17:49:29.04 |
-28:11:18.6 |
HIP 87136 |
19.55 |
| 2026-05-24 00:00 |
17:49:16.27 |
-28:11:23.2 |
HIP 87136 |
17.28 |
| 2026-05-24 12:00 |
17:49:03.41 |
-28:11:27.4 |
HIP 87136 |
15.18 |
| 2026-05-25 00:00 |
17:48:50.44 |
-28:11:31.3 |
HIP 87136 |
13.33 |
| 2026-05-25 12:00 |
17:48:37.39 |
-28:11:34.9 |
HIP 87136 |
11.87 |
| 2026-05-26 00:00 |
17:48:24.24 |
-28:11:38.2 |
HIP 87136 |
10.99 |
| 2026-05-26 12:00 |
17:48:11.00 |
-28:11:41.2 |
HIP 87136 |
10.82 |
| 2026-05-27 00:00 |
17:47:57.67 |
-28:11:43.9 |
HIP 87136 |
11.43 |
| 2026-05-27 12:00 |
17:47:44.25 |
-28:11:46.3 |
HIP 87136 |
12.71 |
| 2026-05-28 00:00 |
17:47:30.75 |
-28:11:48.3 |
HIP 87136 |
14.50 |
| 2026-05-28 12:00 |
17:47:17.17 |
-28:11:50.0 |
HIP 87136 |
16.65 |
| 2026-05-29 00:00 |
17:47:03.51 |
-28:11:51.4 |
HIP 87136 |
19.03 |
| 2026-05-29 12:00 |
17:46:49.77 |
-28:11:52.5 |
HIP 86919 |
20.30 |
| 2026-05-30 00:00 |
17:46:35.95 |
-28:11:53.2 |
HIP 86919 |
18.00 |
| 2026-05-30 12:00 |
17:46:22.06 |
-28:11:53.6 |
HIP 86919 |
15.95 |
| 2026-05-31 00:00 |
17:46:08.09 |
-28:11:53.7 |
HIP 86919 |
14.26 |
| 2026-05-31 12:00 |
17:45:54.06 |
-28:11:53.4 |
HIP 86919 |
13.08 |
| 2026-06-01 00:00 |
17:45:39.96 |
-28:11:52.8 |
HIP 86919 |
12.57 |
| 2026-06-01 12:00 |
17:45:25.79 |
-28:11:51.9 |
HIP 86919 |
12.83 |
| 2026-06-02 00:00 |
17:45:11.56 |
-28:11:50.6 |
HIP 86898 |
13.68 |