メタデータ
| 項目 |
値 |
| Designation |
406P/Gibbs |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-08-26T19:45:19.710720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:45Z |
| Obs used |
193 |
| NEO |
- |
| M1 |
16.700 |
| K1 |
17.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2009-05-14.0000000 |
| e |
0.57404352 |
| q (au) |
1.465341 |
| a (au) |
3.440120 |
| i (deg) |
1.433950 |
| Ω (om, deg) |
8.807182 |
| ω (w, deg) |
353.070367 |
| M (ma, deg) |
96.725441 |
等級
散乱 + 全体線形
$$
M_a = (20.000 + 3.458\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
20.000 |
| n |
3.458 |
| gf |
1.000 |
| gb |
-0.970 |
| 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 |
16:09:22.94 |
-22:17:46.4 |
HIP 79244 |
15.61 |
| 2026-05-12 12:00 |
16:08:58.72 |
-22:16:51.8 |
HIP 79244 |
20.21 |
| 2026-05-13 00:00 |
16:08:34.33 |
-22:15:56.4 |
HIP 78977 |
21.59 |
| 2026-05-13 12:00 |
16:08:09.78 |
-22:15:00.3 |
HIP 78977 |
16.58 |
| 2026-05-14 00:00 |
16:07:45.08 |
-22:14:03.4 |
HIP 78977 |
12.21 |
| 2026-05-14 12:00 |
16:07:20.23 |
-22:13:05.8 |
HIP 78977 |
9.51 |
| 2026-05-15 00:00 |
16:06:55.23 |
-22:12:07.4 |
HIP 78977 |
9.99 |
| 2026-05-15 12:00 |
16:06:30.09 |
-22:11:08.3 |
HIP 78977 |
13.37 |
| 2026-05-16 00:00 |
16:06:04.82 |
-22:10:08.5 |
HIP 78977 |
18.12 |
| 2026-05-16 12:00 |
16:05:39.42 |
-22:09:08.0 |
HIP 78847 |
18.83 |
| 2026-05-17 00:00 |
16:05:13.90 |
-22:08:06.8 |
HIP 78847 |
19.06 |
| 2026-05-17 12:00 |
16:04:48.25 |
-22:07:04.9 |
HIP 78708 |
15.51 |
| 2026-05-18 00:00 |
16:04:22.50 |
-22:06:02.3 |
HIP 78708 |
11.33 |
| 2026-05-18 12:00 |
16:03:56.64 |
-22:04:59.0 |
HIP 78708 |
9.45 |
| 2026-05-19 00:00 |
16:03:30.67 |
-22:03:55.1 |
HIP 78708 |
11.16 |
| 2026-05-19 12:00 |
16:03:04.61 |
-22:02:50.5 |
HIP 78708 |
15.33 |
| 2026-05-20 00:00 |
16:02:38.46 |
-22:01:45.3 |
HIP 78530 |
10.39 |
| 2026-05-20 12:00 |
16:02:12.23 |
-22:00:39.5 |
HIP 78530 |
4.30 |
| 2026-05-21 00:00 |
16:01:45.92 |
-21:59:33.0 |
HIP 78530 |
2.33 |
| 2026-05-21 12:00 |
16:01:19.53 |
-21:58:26.0 |
HIP 78530 |
8.34 |
| 2026-05-22 00:00 |
16:00:53.07 |
-21:57:18.3 |
HIP 78472 |
13.25 |
| 2026-05-22 12:00 |
16:00:26.56 |
-21:56:10.1 |
HIP 78472 |
16.93 |
| 2026-05-23 00:00 |
15:59:59.99 |
-21:55:01.3 |
HIP 78472 |
21.83 |
| 2026-05-23 12:00 |
15:59:33.36 |
-21:53:52.0 |
HIP 78472 |
27.30 |
| 2026-05-24 00:00 |
15:59:06.69 |
-21:52:42.1 |
HIP 78233 |
29.93 |
| 2026-05-24 12:00 |
15:58:39.99 |
-21:51:31.7 |
HIP 78123 |
27.10 |
| 2026-05-25 00:00 |
15:58:13.24 |
-21:50:20.8 |
HIP 78123 |
21.68 |
| 2026-05-25 12:00 |
15:57:46.47 |
-21:49:09.4 |
HIP 78123 |
16.87 |
| 2026-05-26 00:00 |
15:57:19.68 |
-21:47:57.5 |
HIP 78123 |
13.40 |
| 2026-05-26 12:00 |
15:56:52.87 |
-21:46:45.1 |
HIP 78123 |
12.44 |
| 2026-05-27 00:00 |
15:56:26.05 |
-21:45:32.3 |
HIP 78123 |
14.49 |
| 2026-05-27 12:00 |
15:55:59.22 |
-21:44:19.0 |
HIP 78123 |
18.60 |
| 2026-05-28 00:00 |
15:55:32.39 |
-21:43:05.4 |
HIP 77895 |
17.80 |
| 2026-05-28 12:00 |
15:55:05.57 |
-21:41:51.3 |
HIP 77895 |
12.02 |
| 2026-05-29 00:00 |
15:54:38.76 |
-21:40:36.8 |
HIP 77895 |
7.26 |
| 2026-05-29 12:00 |
15:54:11.96 |
-21:39:21.9 |
HIP 77895 |
6.46 |
| 2026-05-30 00:00 |
15:53:45.19 |
-21:38:06.7 |
HIP 77895 |
10.54 |
| 2026-05-30 12:00 |
15:53:18.44 |
-21:36:51.2 |
HIP 77895 |
16.16 |
| 2026-05-31 00:00 |
15:52:51.73 |
-21:35:35.3 |
HIP 77895 |
22.16 |
| 2026-05-31 12:00 |
15:52:25.05 |
-21:34:19.1 |
HIP 77815 |
27.36 |
| 2026-06-01 00:00 |
15:51:58.42 |
-21:33:02.6 |
HIP 77543 |
27.90 |
| 2026-06-01 12:00 |
15:51:31.83 |
-21:31:45.8 |
HIP 77543 |
21.88 |
| 2026-06-02 00:00 |
15:51:05.30 |
-21:30:28.8 |
HIP 77539 |
16.02 |