メタデータ
| 項目 |
値 |
| Designation |
C/2011 A3 (Gibbs) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-12-16T02:06:29.868480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-16T12:05:53Z |
| Obs used |
1747 |
| NEO |
- |
| M1 |
9.900 |
| K1 |
8.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-07-07.0000000 |
| e |
0.99799388 |
| q (au) |
2.344841 |
| a (au) |
1168.845517 |
| i (deg) |
26.074353 |
| Ω (om, deg) |
124.895272 |
| ω (w, deg) |
141.161078 |
| M (ma, deg) |
359.996002 |
等級
散乱 + 全体線形
$$
M_a = (7.606 + 4.476\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.606 |
| n |
4.476 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2011-01-15 |
2011-07-06 |
-1.9498 |
+1.190 |
| 2011-07-06 |
2011-10-24 |
+55.4826 |
-25.761 |
| 2012-03-05 |
2012-09-09 |
-0.6396 |
-0.001 |
| 2012-09-09 |
2013-10-06 |
-6.5562 |
+2.870 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
03:59:40.61 |
-03:40:50.7 |
HIP 18588 |
15.12 |
| 2026-06-01 12:00 |
03:59:44.40 |
-03:40:42.7 |
HIP 18588 |
16.05 |
| 2026-06-02 00:00 |
03:59:48.18 |
-03:40:34.9 |
HIP 18588 |
16.99 |
| 2026-06-02 12:00 |
03:59:51.95 |
-03:40:27.2 |
HIP 18588 |
17.92 |
| 2026-06-03 00:00 |
03:59:55.72 |
-03:40:19.8 |
HIP 18588 |
18.86 |
| 2026-06-03 12:00 |
03:59:59.49 |
-03:40:12.5 |
HIP 18588 |
19.80 |
| 2026-06-04 00:00 |
04:00:03.25 |
-03:40:05.5 |
HIP 18588 |
20.73 |
| 2026-06-04 12:00 |
04:00:07.00 |
-03:39:58.7 |
HIP 18588 |
21.67 |
| 2026-06-05 00:00 |
04:00:10.75 |
-03:39:52.0 |
HIP 18588 |
22.61 |
| 2026-06-05 12:00 |
04:00:14.49 |
-03:39:45.6 |
HIP 18588 |
23.54 |
| 2026-06-06 00:00 |
04:00:18.22 |
-03:39:39.4 |
HIP 18588 |
24.47 |
| 2026-06-06 12:00 |
04:00:21.95 |
-03:39:33.3 |
HIP 18588 |
25.40 |
| 2026-06-07 00:00 |
04:00:25.67 |
-03:39:27.5 |
HIP 18588 |
26.33 |
| 2026-06-07 12:00 |
04:00:29.39 |
-03:39:21.9 |
HIP 18588 |
27.26 |
| 2026-06-08 00:00 |
04:00:33.10 |
-03:39:16.5 |
HIP 18588 |
28.19 |
| 2026-06-08 12:00 |
04:00:36.80 |
-03:39:11.3 |
HIP 18588 |
29.11 |
| 2026-06-09 00:00 |
04:00:40.49 |
-03:39:06.3 |
HIP 18588 |
30.04 |
| 2026-06-09 12:00 |
04:00:44.17 |
-03:39:01.5 |
HIP 18588 |
30.96 |
| 2026-06-10 00:00 |
04:00:47.85 |
-03:38:56.9 |
HIP 18588 |
31.88 |
| 2026-06-10 12:00 |
04:00:51.52 |
-03:38:52.5 |
HIP 18588 |
32.79 |
| 2026-06-11 00:00 |
04:00:55.18 |
-03:38:48.3 |
HIP 18588 |
33.71 |
| 2026-06-11 12:00 |
04:00:58.83 |
-03:38:44.3 |
HIP 18588 |
34.62 |
| 2026-06-12 00:00 |
04:01:02.47 |
-03:38:40.5 |
HIP 18588 |
35.53 |
| 2026-06-12 12:00 |
04:01:06.10 |
-03:38:37.0 |
HIP 18588 |
36.44 |
| 2026-06-13 00:00 |
04:01:09.73 |
-03:38:33.6 |
HIP 18588 |
37.35 |
| 2026-06-13 12:00 |
04:01:13.34 |
-03:38:30.4 |
HIP 18588 |
38.25 |
| 2026-06-14 00:00 |
04:01:16.95 |
-03:38:27.5 |
HIP 18588 |
39.15 |
| 2026-06-14 12:00 |
04:01:20.54 |
-03:38:24.8 |
HIP 18588 |
40.05 |
| 2026-06-15 00:00 |
04:01:24.12 |
-03:38:22.2 |
HIP 18588 |
40.94 |
| 2026-06-15 12:00 |
04:01:27.69 |
-03:38:19.9 |
HIP 18835 |
41.64 |
| 2026-06-16 00:00 |
04:01:31.25 |
-03:38:17.8 |
HIP 18835 |
41.42 |
| 2026-06-16 12:00 |
04:01:34.80 |
-03:38:15.9 |
HIP 18835 |
41.22 |
| 2026-06-17 00:00 |
04:01:38.34 |
-03:38:14.2 |
HIP 18835 |
41.04 |
| 2026-06-17 12:00 |
04:01:41.87 |
-03:38:12.7 |
HIP 18835 |
40.87 |
| 2026-06-18 00:00 |
04:01:45.39 |
-03:38:11.4 |
HIP 18835 |
40.71 |
| 2026-06-18 12:00 |
04:01:48.89 |
-03:38:10.3 |
HIP 18835 |
40.57 |
| 2026-06-19 00:00 |
04:01:52.38 |
-03:38:09.5 |
HIP 18835 |
40.45 |
| 2026-06-19 12:00 |
04:01:55.86 |
-03:38:08.8 |
HIP 18835 |
40.34 |
| 2026-06-20 00:00 |
04:01:59.32 |
-03:38:08.4 |
HIP 18835 |
40.25 |
| 2026-06-20 12:00 |
04:02:02.77 |
-03:38:08.1 |
HIP 18835 |
40.17 |
| 2026-06-21 00:00 |
04:02:06.21 |
-03:38:08.1 |
HIP 18835 |
40.11 |
| 2026-06-21 12:00 |
04:02:09.64 |
-03:38:08.2 |
HIP 19027 |
39.76 |
| 2026-06-22 00:00 |
04:02:13.05 |
-03:38:08.6 |
HIP 19027 |
39.00 |