メタデータ
| 項目 |
値 |
| Designation |
P/2011 C2 (Gibbs) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-01-07T21:49:24.366720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:48Z |
| Obs used |
184 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
12.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-10-11.0000000 |
| e |
0.26847186 |
| q (au) |
5.388548 |
| a (au) |
7.366152 |
| i (deg) |
10.910944 |
| Ω (om, deg) |
12.201981 |
| ω (w, deg) |
160.563612 |
| M (ma, deg) |
355.616810 |
等級
散乱 + 全体線形
$$
M_a = (8.134 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.134 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.705 |
| k |
0.800 |
| δ90 |
9.974 |
| 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) |
| 2026-06-01 00:00 |
02:47:13.71 |
+21:25:53.7 |
HIP 13029 |
6.15 |
| 2026-06-01 12:00 |
02:47:29.44 |
+21:27:19.4 |
HIP 13029 |
6.61 |
| 2026-06-02 00:00 |
02:47:45.15 |
+21:28:44.9 |
HIP 13029 |
8.97 |
| 2026-06-02 12:00 |
02:48:00.83 |
+21:30:10.3 |
HIP 13029 |
12.15 |
| 2026-06-03 00:00 |
02:48:16.47 |
+21:31:35.7 |
HIP 13029 |
15.67 |
| 2026-06-03 12:00 |
02:48:32.09 |
+21:33:00.9 |
HIP 13029 |
19.33 |
| 2026-06-04 00:00 |
02:48:47.67 |
+21:34:26.0 |
HIP 13152 |
19.53 |
| 2026-06-04 12:00 |
02:49:03.22 |
+21:35:51.1 |
HIP 13152 |
20.35 |
| 2026-06-05 00:00 |
02:49:18.74 |
+21:37:16.0 |
HIP 13152 |
21.83 |
| 2026-06-05 12:00 |
02:49:34.23 |
+21:38:40.8 |
HIP 13152 |
23.85 |
| 2026-06-06 00:00 |
02:49:49.68 |
+21:40:05.6 |
HIP 13152 |
26.29 |
| 2026-06-06 12:00 |
02:50:05.09 |
+21:41:30.2 |
HIP 13253 |
26.20 |
| 2026-06-07 00:00 |
02:50:20.47 |
+21:42:54.7 |
HIP 13253 |
24.13 |
| 2026-06-07 12:00 |
02:50:35.82 |
+21:44:19.1 |
HIP 13253 |
22.52 |
| 2026-06-08 00:00 |
02:50:51.12 |
+21:45:43.3 |
HIP 13253 |
21.49 |
| 2026-06-08 12:00 |
02:51:06.39 |
+21:47:07.5 |
HIP 13253 |
21.10 |
| 2026-06-09 00:00 |
02:51:21.63 |
+21:48:31.5 |
HIP 13253 |
21.39 |
| 2026-06-09 12:00 |
02:51:36.82 |
+21:49:55.5 |
HIP 13253 |
22.33 |
| 2026-06-10 00:00 |
02:51:51.98 |
+21:51:19.3 |
HIP 13253 |
23.84 |
| 2026-06-10 12:00 |
02:52:07.09 |
+21:52:42.9 |
HIP 13253 |
25.80 |
| 2026-06-11 00:00 |
02:52:22.17 |
+21:54:06.5 |
HIP 13253 |
28.13 |
| 2026-06-11 12:00 |
02:52:37.20 |
+21:55:29.9 |
HIP 13253 |
30.74 |
| 2026-06-12 00:00 |
02:52:52.19 |
+21:56:53.2 |
HIP 13253 |
33.55 |
| 2026-06-12 12:00 |
02:53:07.14 |
+21:58:16.3 |
HIP 13589 |
35.42 |
| 2026-06-13 00:00 |
02:53:22.05 |
+21:59:39.3 |
HIP 13589 |
33.79 |
| 2026-06-13 12:00 |
02:53:36.91 |
+22:01:02.2 |
HIP 13589 |
32.51 |
| 2026-06-14 00:00 |
02:53:51.73 |
+22:02:24.9 |
HIP 13589 |
31.62 |
| 2026-06-14 12:00 |
02:54:06.51 |
+22:03:47.5 |
HIP 13589 |
31.16 |
| 2026-06-15 00:00 |
02:54:21.24 |
+22:05:10.0 |
HIP 13589 |
31.13 |
| 2026-06-15 12:00 |
02:54:35.92 |
+22:06:32.3 |
HIP 13589 |
31.54 |
| 2026-06-16 00:00 |
02:54:50.55 |
+22:07:54.4 |
HIP 13589 |
32.35 |
| 2026-06-16 12:00 |
02:55:05.14 |
+22:09:16.4 |
HIP 13589 |
33.55 |
| 2026-06-17 00:00 |
02:55:19.68 |
+22:10:38.3 |
HIP 13589 |
35.08 |
| 2026-06-17 12:00 |
02:55:34.17 |
+22:12:00.0 |
HIP 13589 |
36.91 |
| 2026-06-18 00:00 |
02:55:48.60 |
+22:13:21.5 |
HIP 13589 |
38.98 |
| 2026-06-18 12:00 |
02:56:02.99 |
+22:14:42.9 |
HIP 13589 |
41.26 |
| 2026-06-19 00:00 |
02:56:17.33 |
+22:16:04.1 |
HIP 13890 |
39.11 |
| 2026-06-19 12:00 |
02:56:31.62 |
+22:17:25.1 |
HIP 13890 |
36.72 |
| 2026-06-20 00:00 |
02:56:45.85 |
+22:18:46.0 |
HIP 13890 |
34.54 |
| 2026-06-20 12:00 |
02:57:00.03 |
+22:20:06.7 |
HIP 13890 |
32.61 |
| 2026-06-21 00:00 |
02:57:14.16 |
+22:21:27.3 |
HIP 13890 |
30.98 |
| 2026-06-21 12:00 |
02:57:28.23 |
+22:22:47.6 |
HIP 13890 |
29.69 |
| 2026-06-22 00:00 |
02:57:42.25 |
+22:24:07.8 |
HIP 13890 |
28.79 |