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) |
| 2026-03-26 00:00 |
18:55:57.60 |
-12:32:28.4 |
HIP 93088 |
30.77 |
| 2026-03-26 12:00 |
18:56:47.51 |
-12:31:17.5 |
HIP 93088 |
22.03 |
| 2026-03-27 00:00 |
18:57:37.28 |
-12:30:06.0 |
HIP 93088 |
17.97 |
| 2026-03-27 12:00 |
18:58:26.92 |
-12:28:54.0 |
HIP 93200 |
10.53 |
| 2026-03-28 00:00 |
18:59:16.44 |
-12:27:41.4 |
HIP 93200 |
8.43 |
| 2026-03-28 12:00 |
19:00:05.81 |
-12:26:28.4 |
HIP 93200 |
18.03 |
| 2026-03-29 00:00 |
19:00:55.06 |
-12:25:14.8 |
HIP 93200 |
29.52 |
| 2026-03-29 12:00 |
19:01:44.17 |
-12:24:00.8 |
HIP 93560 |
30.26 |
| 2026-03-30 00:00 |
19:02:33.14 |
-12:22:46.3 |
HIP 93560 |
23.13 |
| 2026-03-30 12:00 |
19:03:21.98 |
-12:21:31.4 |
HIP 93560 |
21.05 |
| 2026-03-31 00:00 |
19:04:10.68 |
-12:20:16.1 |
HIP 93560 |
25.25 |
| 2026-03-31 12:00 |
19:04:59.23 |
-12:19:00.4 |
HIP 93849 |
26.17 |
| 2026-04-01 00:00 |
19:05:47.65 |
-12:17:44.2 |
HIP 93849 |
15.27 |
| 2026-04-01 12:00 |
19:06:35.92 |
-12:16:27.7 |
HIP 93849 |
8.02 |
| 2026-04-02 00:00 |
19:07:24.05 |
-12:15:10.8 |
HIP 93849 |
13.27 |
| 2026-04-02 12:00 |
19:08:12.03 |
-12:13:53.6 |
HIP 93849 |
23.79 |
| 2026-04-03 00:00 |
19:08:59.87 |
-12:12:36.0 |
HIP 94222 |
27.40 |
| 2026-04-03 12:00 |
19:09:47.56 |
-12:11:18.1 |
HIP 94222 |
15.69 |
| 2026-04-04 00:00 |
19:10:35.09 |
-12:10:00.0 |
HIP 94222 |
4.08 |
| 2026-04-04 12:00 |
19:11:22.48 |
-12:08:41.5 |
HIP 94222 |
7.75 |
| 2026-04-05 00:00 |
19:12:09.71 |
-12:07:22.8 |
HIP 94437 |
18.71 |
| 2026-04-05 12:00 |
19:12:56.79 |
-12:06:03.9 |
HIP 94437 |
11.81 |
| 2026-04-06 00:00 |
19:13:43.71 |
-12:04:44.7 |
HIP 94437 |
14.02 |
| 2026-04-06 12:00 |
19:14:30.47 |
-12:03:25.3 |
HIP 94437 |
22.77 |
| 2026-04-07 00:00 |
19:15:17.07 |
-12:02:05.8 |
HIP 94633 |
19.32 |
| 2026-04-07 12:00 |
19:16:03.51 |
-12:00:46.0 |
HIP 94633 |
20.10 |
| 2026-04-08 00:00 |
19:16:49.79 |
-11:59:26.2 |
HIP 94722 |
25.91 |
| 2026-04-08 12:00 |
19:17:35.90 |
-11:58:06.2 |
HIP 94722 |
29.27 |
| 2026-04-09 00:00 |
19:18:21.85 |
-11:56:46.0 |
HIP 94722 |
36.02 |
| 2026-04-09 12:00 |
19:19:07.62 |
-11:55:25.8 |
HIP 95122 |
28.55 |
| 2026-04-10 00:00 |
19:19:53.23 |
-11:54:05.6 |
HIP 95122 |
17.83 |
| 2026-04-10 12:00 |
19:20:38.66 |
-11:52:45.3 |
HIP 95122 |
8.58 |
| 2026-04-11 00:00 |
19:21:23.92 |
-11:51:24.9 |
HIP 95122 |
8.92 |
| 2026-04-11 12:00 |
19:22:09.00 |
-11:50:04.6 |
HIP 95122 |
18.24 |
| 2026-04-12 00:00 |
19:22:53.91 |
-11:48:44.3 |
HIP 95122 |
28.82 |
| 2026-04-12 12:00 |
19:23:38.63 |
-11:47:24.0 |
HIP 95442 |
18.23 |
| 2026-04-13 00:00 |
19:24:23.17 |
-11:46:03.8 |
HIP 95442 |
8.33 |
| 2026-04-13 12:00 |
19:25:07.53 |
-11:44:43.7 |
HIP 95442 |
6.87 |
| 2026-04-14 00:00 |
19:25:51.70 |
-11:43:23.7 |
HIP 95481 |
14.96 |
| 2026-04-14 12:00 |
19:26:35.69 |
-11:42:03.9 |
HIP 95481 |
21.95 |
| 2026-04-15 00:00 |
19:27:19.48 |
-11:40:44.2 |
HIP 95722 |
30.78 |
| 2026-04-15 12:00 |
19:28:03.09 |
-11:39:24.6 |
HIP 95722 |
29.35 |
| 2026-04-16 00:00 |
19:28:46.50 |
-11:38:05.3 |
HIP 95722 |
31.71 |