メタデータ
| 項目 |
値 |
| Designation |
335P/Gibbs |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-01-22T07:32:06.869760Z |
| Orbit solution date (soln_date, UTC) |
2023-06-01T23:13:11Z |
| Obs used |
430 |
| NEO |
- |
| M1 |
17.000 |
| K1 |
7.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-05-16.0000000 |
| e |
0.54345355 |
| q (au) |
1.638014 |
| a (au) |
3.587837 |
| i (deg) |
7.275514 |
| Ω (om, deg) |
330.891145 |
| ω (w, deg) |
162.299106 |
| M (ma, deg) |
69.423380 |
等級
散乱 + 全体線形
$$
M_a = (15.188 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.188 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.634 |
| k |
0.800 |
| 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) |
| 2026-09-20 00:00 |
21:32:29.82 |
-15:12:24.9 |
HIP 106354 |
30.16 |
| 2026-09-20 12:00 |
21:32:16.33 |
-15:13:12.4 |
HIP 106354 |
29.43 |
| 2026-09-21 00:00 |
21:32:03.00 |
-15:13:59.1 |
HIP 106354 |
29.07 |
| 2026-09-21 12:00 |
21:31:49.83 |
-15:14:45.0 |
HIP 106139 |
27.78 |
| 2026-09-22 00:00 |
21:31:36.81 |
-15:15:30.1 |
HIP 106139 |
24.88 |
| 2026-09-22 12:00 |
21:31:23.95 |
-15:16:14.3 |
HIP 106139 |
22.10 |
| 2026-09-23 00:00 |
21:31:11.25 |
-15:16:57.8 |
HIP 106139 |
19.48 |
| 2026-09-23 12:00 |
21:30:58.71 |
-15:17:40.4 |
HIP 106139 |
17.06 |
| 2026-09-24 00:00 |
21:30:46.34 |
-15:18:22.1 |
HIP 106139 |
14.92 |
| 2026-09-24 12:00 |
21:30:34.13 |
-15:19:03.1 |
HIP 106139 |
13.17 |
| 2026-09-25 00:00 |
21:30:22.08 |
-15:19:43.2 |
HIP 106139 |
11.95 |
| 2026-09-25 12:00 |
21:30:10.21 |
-15:20:22.5 |
HIP 106139 |
11.40 |
| 2026-09-26 00:00 |
21:29:58.50 |
-15:21:01.0 |
HIP 106139 |
11.58 |
| 2026-09-26 12:00 |
21:29:46.96 |
-15:21:38.6 |
HIP 106139 |
12.43 |
| 2026-09-27 00:00 |
21:29:35.59 |
-15:22:15.3 |
HIP 106139 |
13.80 |
| 2026-09-27 12:00 |
21:29:24.39 |
-15:22:51.2 |
HIP 106139 |
15.52 |
| 2026-09-28 00:00 |
21:29:13.37 |
-15:23:26.3 |
HIP 106139 |
17.48 |
| 2026-09-28 12:00 |
21:29:02.52 |
-15:24:00.5 |
HIP 106139 |
19.58 |
| 2026-09-29 00:00 |
21:28:51.84 |
-15:24:33.8 |
HIP 106139 |
21.77 |
| 2026-09-29 12:00 |
21:28:41.35 |
-15:25:06.3 |
HIP 106139 |
24.01 |
| 2026-09-30 00:00 |
21:28:31.03 |
-15:25:37.9 |
HIP 106139 |
26.26 |
| 2026-09-30 12:00 |
21:28:20.88 |
-15:26:08.7 |
HIP 106139 |
28.53 |
| 2026-10-01 00:00 |
21:28:10.92 |
-15:26:38.5 |
HIP 105861 |
27.73 |
| 2026-10-01 12:00 |
21:28:01.14 |
-15:27:07.6 |
HIP 105861 |
25.85 |
| 2026-10-02 00:00 |
21:27:51.54 |
-15:27:35.7 |
HIP 105861 |
24.10 |
| 2026-10-02 12:00 |
21:27:42.12 |
-15:28:03.0 |
HIP 105861 |
22.48 |
| 2026-10-03 00:00 |
21:27:32.89 |
-15:28:29.4 |
HIP 105861 |
21.01 |
| 2026-10-03 12:00 |
21:27:23.84 |
-15:28:54.9 |
HIP 105861 |
19.72 |
| 2026-10-04 00:00 |
21:27:14.98 |
-15:29:19.5 |
HIP 105861 |
18.62 |
| 2026-10-04 12:00 |
21:27:06.30 |
-15:29:43.2 |
HIP 105861 |
17.74 |
| 2026-10-05 00:00 |
21:26:57.81 |
-15:30:06.1 |
HIP 105861 |
17.08 |
| 2026-10-05 12:00 |
21:26:49.51 |
-15:30:28.0 |
HIP 105861 |
16.66 |
| 2026-10-06 00:00 |
21:26:41.40 |
-15:30:49.1 |
HIP 105861 |
16.47 |
| 2026-10-06 12:00 |
21:26:33.48 |
-15:31:09.3 |
HIP 105861 |
16.51 |
| 2026-10-07 00:00 |
21:26:25.75 |
-15:31:28.6 |
HIP 105861 |
16.76 |
| 2026-10-07 12:00 |
21:26:18.22 |
-15:31:46.9 |
HIP 105861 |
17.20 |
| 2026-10-08 00:00 |
21:26:10.87 |
-15:32:04.4 |
HIP 105861 |
17.79 |
| 2026-10-08 12:00 |
21:26:03.72 |
-15:32:21.0 |
HIP 105861 |
18.51 |
| 2026-10-09 00:00 |
21:25:56.77 |
-15:32:36.6 |
HIP 105861 |
19.33 |
| 2026-10-09 12:00 |
21:25:50.01 |
-15:32:51.4 |
HIP 105861 |
20.22 |
| 2026-10-10 00:00 |
21:25:43.44 |
-15:33:05.2 |
HIP 105861 |
21.17 |
| 2026-10-10 12:00 |
21:25:37.07 |
-15:33:18.2 |
HIP 105861 |
22.15 |
| 2026-10-11 00:00 |
21:25:30.90 |
-15:33:30.2 |
HIP 105861 |
23.16 |