P/2012 K3 (Gibbs)
メタデータ
| 項目 |
値 |
| Designation |
P/2012 K3 (Gibbs) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-09-30T07:57:06.281280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:08Z |
| Obs used |
140 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
29.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-06-16.0000000 |
| e |
0.42596008 |
| q (au) |
2.076862 |
| a (au) |
3.617975 |
| i (deg) |
13.201167 |
| Ω (om, deg) |
125.881316 |
| ω (w, deg) |
172.300572 |
| M (ma, deg) |
344.771159 |
等級
散乱 + 全体線形
$$
M_a = (11.656 + 5.891\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.656 |
| n |
5.891 |
| gf |
1.000 |
| 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) |
| 2026-02-03 00:00 |
17:23:30.26 |
-13:09:03.8 |
HIP 85208 |
19.56 |
| 2026-02-03 12:00 |
17:24:27.09 |
-13:09:44.5 |
HIP 85208 |
8.76 |
| 2026-02-04 00:00 |
17:25:23.91 |
-13:10:23.8 |
HIP 85208 |
12.43 |
| 2026-02-04 12:00 |
17:26:20.72 |
-13:11:01.7 |
HIP 85354 |
2.81 |
| 2026-02-05 00:00 |
17:27:17.50 |
-13:11:38.3 |
HIP 85410 |
8.06 |
| 2026-02-05 12:00 |
17:28:14.28 |
-13:12:13.5 |
HIP 85410 |
16.72 |
| 2026-02-06 00:00 |
17:29:11.03 |
-13:12:47.3 |
HIP 85691 |
23.86 |
| 2026-02-06 12:00 |
17:30:07.77 |
-13:13:19.7 |
HIP 85691 |
11.45 |
| 2026-02-07 00:00 |
17:31:04.49 |
-13:13:50.7 |
HIP 85691 |
8.68 |
| 2026-02-07 12:00 |
17:32:01.19 |
-13:14:20.4 |
HIP 85871 |
18.92 |
| 2026-02-08 00:00 |
17:32:57.87 |
-13:14:48.7 |
HIP 85871 |
14.22 |
| 2026-02-08 12:00 |
17:33:54.53 |
-13:15:15.6 |
HIP 85939 |
15.05 |
| 2026-02-09 00:00 |
17:34:51.16 |
-13:15:41.1 |
HIP 85939 |
20.67 |
| 2026-02-09 12:00 |
17:35:47.77 |
-13:16:05.3 |
HIP 86049 |
24.25 |
| 2026-02-10 00:00 |
17:36:44.36 |
-13:16:28.2 |
HIP 86049 |
32.09 |
| 2026-02-10 12:00 |
17:37:40.92 |
-13:16:49.6 |
HIP 86420 |
34.59 |
| 2026-02-11 00:00 |
17:38:37.45 |
-13:17:09.7 |
HIP 86420 |
25.31 |
| 2026-02-11 12:00 |
17:39:33.96 |
-13:17:28.5 |
HIP 86420 |
21.53 |
| 2026-02-12 00:00 |
17:40:30.43 |
-13:17:45.9 |
HIP 86523 |
23.49 |
| 2026-02-12 12:00 |
17:41:26.87 |
-13:18:01.9 |
HIP 86523 |
24.48 |
| 2026-02-13 00:00 |
17:42:23.29 |
-13:18:16.6 |
HIP 86769 |
24.05 |
| 2026-02-13 12:00 |
17:43:19.66 |
-13:18:30.0 |
HIP 86769 |
13.90 |
| 2026-02-14 00:00 |
17:44:16.01 |
-13:18:42.0 |
HIP 86769 |
13.58 |
| 2026-02-14 12:00 |
17:45:12.32 |
-13:18:52.7 |
HIP 86938 |
9.99 |
| 2026-02-15 00:00 |
17:46:08.59 |
-13:19:02.0 |
HIP 86938 |
3.77 |
| 2026-02-15 12:00 |
17:47:04.83 |
-13:19:10.0 |
HIP 86938 |
17.41 |
| 2026-02-16 00:00 |
17:48:01.02 |
-13:19:16.7 |
HIP 86938 |
31.08 |
| 2026-02-16 12:00 |
17:48:57.18 |
-13:19:22.1 |
HIP 86938 |
44.74 |
| 2026-02-17 00:00 |
17:49:53.29 |
-13:19:26.2 |
HIP 87468 |
40.49 |
| 2026-02-17 12:00 |
17:50:49.36 |
-13:19:29.0 |
HIP 87468 |
29.37 |
| 2026-02-18 00:00 |
17:51:45.39 |
-13:19:30.5 |
HIP 87468 |
21.42 |
| 2026-02-18 12:00 |
17:52:41.38 |
-13:19:30.6 |
HIP 87544 |
20.33 |
| 2026-02-19 00:00 |
17:53:37.32 |
-13:19:29.5 |
HIP 87544 |
21.04 |
| 2026-02-19 12:00 |
17:54:33.21 |
-13:19:27.1 |
HIP 87544 |
29.02 |
| 2026-02-20 00:00 |
17:55:29.05 |
-13:19:23.5 |
HIP 87879 |
30.98 |
| 2026-02-20 12:00 |
17:56:24.84 |
-13:19:18.6 |
HIP 87879 |
22.37 |
| 2026-02-21 00:00 |
17:57:20.59 |
-13:19:12.4 |
HIP 87879 |
20.26 |
| 2026-02-21 12:00 |
17:58:16.28 |
-13:19:04.9 |
HIP 88010 |
14.44 |
| 2026-02-22 00:00 |
17:59:11.92 |
-13:18:56.2 |
HIP 88010 |
15.49 |
| 2026-02-22 12:00 |
18:00:07.50 |
-13:18:46.3 |
HIP 88090 |
19.38 |
| 2026-02-23 00:00 |
18:01:03.04 |
-13:18:35.1 |
HIP 88301 |
16.28 |
| 2026-02-23 12:00 |
18:01:58.51 |
-13:18:22.7 |
HIP 88301 |
9.55 |
| 2026-02-24 00:00 |
18:02:53.94 |
-13:18:09.1 |
HIP 88301 |
16.77 |