メタデータ
| 項目 |
値 |
| Designation |
P/2011 S1 (Gibbs) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-08-24T00:44:05.058240Z |
| Orbit solution date (soln_date, UTC) |
2022-04-30T03:13:22Z |
| Obs used |
148 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
11.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2013-06-05.0000000 |
| e |
0.20315224 |
| q (au) |
6.894034 |
| a (au) |
8.651632 |
| i (deg) |
2.679391 |
| Ω (om, deg) |
218.895891 |
| ω (w, deg) |
193.367451 |
| M (ma, deg) |
342.763587 |
等級
散乱 + 全体線形
$$
M_a = (2.792 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
2.792 |
| n |
6.000 |
| gf |
0.941 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
8.160 |
| 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) |
| 2026-07-29 00:00 |
14:29:23.83 |
-14:24:46.7 |
HIP 70934 |
19.06 |
| 2026-07-29 12:00 |
14:29:26.34 |
-14:24:57.4 |
HIP 70934 |
18.47 |
| 2026-07-30 00:00 |
14:29:28.94 |
-14:25:08.5 |
HIP 70934 |
17.86 |
| 2026-07-30 12:00 |
14:29:31.63 |
-14:25:20.1 |
HIP 70934 |
17.23 |
| 2026-07-31 00:00 |
14:29:34.41 |
-14:25:32.1 |
HIP 70934 |
16.59 |
| 2026-07-31 12:00 |
14:29:37.28 |
-14:25:44.5 |
HIP 70934 |
15.93 |
| 2026-08-01 00:00 |
14:29:40.23 |
-14:25:57.4 |
HIP 70934 |
15.25 |
| 2026-08-01 12:00 |
14:29:43.28 |
-14:26:10.7 |
HIP 70934 |
14.57 |
| 2026-08-02 00:00 |
14:29:46.42 |
-14:26:24.4 |
HIP 70934 |
13.87 |
| 2026-08-02 12:00 |
14:29:49.64 |
-14:26:38.6 |
HIP 70934 |
13.16 |
| 2026-08-03 00:00 |
14:29:52.96 |
-14:26:53.1 |
HIP 70934 |
12.44 |
| 2026-08-03 12:00 |
14:29:56.36 |
-14:27:08.1 |
HIP 70934 |
11.72 |
| 2026-08-04 00:00 |
14:29:59.85 |
-14:27:23.6 |
HIP 70934 |
11.01 |
| 2026-08-04 12:00 |
14:30:03.43 |
-14:27:39.4 |
HIP 70934 |
10.30 |
| 2026-08-05 00:00 |
14:30:07.09 |
-14:27:55.7 |
HIP 70934 |
9.61 |
| 2026-08-05 12:00 |
14:30:10.85 |
-14:28:12.4 |
HIP 70934 |
8.94 |
| 2026-08-06 00:00 |
14:30:14.69 |
-14:28:29.6 |
HIP 70934 |
8.32 |
| 2026-08-06 12:00 |
14:30:18.62 |
-14:28:47.1 |
HIP 70934 |
7.76 |
| 2026-08-07 00:00 |
14:30:22.64 |
-14:29:05.1 |
HIP 70934 |
7.28 |
| 2026-08-07 12:00 |
14:30:26.74 |
-14:29:23.5 |
HIP 70934 |
6.91 |
| 2026-08-08 00:00 |
14:30:30.93 |
-14:29:42.3 |
HIP 70934 |
6.68 |
| 2026-08-08 12:00 |
14:30:35.21 |
-14:30:01.5 |
HIP 70934 |
6.62 |
| 2026-08-09 00:00 |
14:30:39.58 |
-14:30:21.1 |
HIP 70934 |
6.74 |
| 2026-08-09 12:00 |
14:30:44.03 |
-14:30:41.2 |
HIP 70934 |
7.03 |
| 2026-08-10 00:00 |
14:30:48.57 |
-14:31:01.6 |
HIP 70934 |
7.50 |
| 2026-08-10 12:00 |
14:30:53.19 |
-14:31:22.5 |
HIP 70934 |
8.12 |
| 2026-08-11 00:00 |
14:30:57.90 |
-14:31:43.8 |
HIP 70934 |
8.86 |
| 2026-08-11 12:00 |
14:31:02.70 |
-14:32:05.4 |
HIP 70934 |
9.71 |
| 2026-08-12 00:00 |
14:31:07.58 |
-14:32:27.5 |
HIP 70934 |
10.65 |
| 2026-08-12 12:00 |
14:31:12.55 |
-14:32:50.0 |
HIP 70934 |
11.66 |
| 2026-08-13 00:00 |
14:31:17.60 |
-14:33:12.9 |
HIP 70934 |
12.73 |
| 2026-08-13 12:00 |
14:31:22.74 |
-14:33:36.2 |
HIP 70934 |
13.86 |
| 2026-08-14 00:00 |
14:31:27.96 |
-14:33:59.9 |
HIP 70934 |
15.04 |
| 2026-08-14 12:00 |
14:31:33.26 |
-14:34:24.0 |
HIP 70934 |
16.25 |
| 2026-08-15 00:00 |
14:31:38.65 |
-14:34:48.5 |
HIP 70934 |
17.51 |
| 2026-08-15 12:00 |
14:31:44.12 |
-14:35:13.3 |
HIP 70934 |
18.80 |
| 2026-08-16 00:00 |
14:31:49.68 |
-14:35:38.6 |
HIP 70934 |
20.12 |
| 2026-08-16 12:00 |
14:31:55.31 |
-14:36:04.2 |
HIP 70934 |
21.48 |
| 2026-08-17 00:00 |
14:32:01.03 |
-14:36:30.2 |
HIP 70934 |
22.86 |
| 2026-08-17 12:00 |
14:32:06.83 |
-14:36:56.6 |
HIP 70934 |
24.27 |
| 2026-08-18 00:00 |
14:32:12.72 |
-14:37:23.4 |
HIP 70934 |
25.71 |
| 2026-08-18 12:00 |
14:32:18.68 |
-14:37:50.6 |
HIP 70934 |
27.17 |
| 2026-08-19 00:00 |
14:32:24.73 |
-14:38:18.1 |
HIP 71180 |
26.87 |