メタデータ
| 項目 |
値 |
| Designation |
C/2012 F1 (Gibbs) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-02-19T02:09:39.654720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:05Z |
| Obs used |
83 |
| NEO |
- |
| M1 |
13.800 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-03-22.0000000 |
| e |
0.96570670 |
| q (au) |
2.550934 |
| a (au) |
74.385762 |
| i (deg) |
159.396833 |
| Ω (om, deg) |
129.965498 |
| ω (w, deg) |
300.425399 |
| M (ma, deg) |
0.049023 |
等級
散乱 + 全体線形
$$
M_a = (15.982 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.982 |
| n |
2.000 |
| gf |
0.801 |
| gb |
-0.500 |
| k |
0.899 |
| δ90 |
1.000 |
| 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 |
01:58:01.13 |
+33:18:05.7 |
HIP 9269 |
14.71 |
| 2026-03-26 12:00 |
01:58:04.79 |
+33:18:11.4 |
HIP 9269 |
14.04 |
| 2026-03-27 00:00 |
01:58:08.47 |
+33:18:17.3 |
HIP 9269 |
13.38 |
| 2026-03-27 12:00 |
01:58:12.16 |
+33:18:23.5 |
HIP 9269 |
12.73 |
| 2026-03-28 00:00 |
01:58:15.86 |
+33:18:29.8 |
HIP 9269 |
12.10 |
| 2026-03-28 12:00 |
01:58:19.58 |
+33:18:36.4 |
HIP 9269 |
11.48 |
| 2026-03-29 00:00 |
01:58:23.32 |
+33:18:43.3 |
HIP 9269 |
10.88 |
| 2026-03-29 12:00 |
01:58:27.06 |
+33:18:50.3 |
HIP 9269 |
10.31 |
| 2026-03-30 00:00 |
01:58:30.83 |
+33:18:57.6 |
HIP 9269 |
9.77 |
| 2026-03-30 12:00 |
01:58:34.60 |
+33:19:05.1 |
HIP 9269 |
9.27 |
| 2026-03-31 00:00 |
01:58:38.39 |
+33:19:12.9 |
HIP 9269 |
8.82 |
| 2026-03-31 12:00 |
01:58:42.19 |
+33:19:20.8 |
HIP 9269 |
8.42 |
| 2026-04-01 00:00 |
01:58:46.00 |
+33:19:29.0 |
HIP 9269 |
8.08 |
| 2026-04-01 12:00 |
01:58:49.83 |
+33:19:37.4 |
HIP 9269 |
7.81 |
| 2026-04-02 00:00 |
01:58:53.67 |
+33:19:46.0 |
HIP 9269 |
7.62 |
| 2026-04-02 12:00 |
01:58:57.52 |
+33:19:54.9 |
HIP 9269 |
7.52 |
| 2026-04-03 00:00 |
01:59:01.38 |
+33:20:03.9 |
HIP 9269 |
7.51 |
| 2026-04-03 12:00 |
01:59:05.25 |
+33:20:13.2 |
HIP 9269 |
7.59 |
| 2026-04-04 00:00 |
01:59:09.14 |
+33:20:22.7 |
HIP 9269 |
7.77 |
| 2026-04-04 12:00 |
01:59:13.03 |
+33:20:32.4 |
HIP 9269 |
8.03 |
| 2026-04-05 00:00 |
01:59:16.94 |
+33:20:42.3 |
HIP 9269 |
8.36 |
| 2026-04-05 12:00 |
01:59:20.85 |
+33:20:52.5 |
HIP 9269 |
8.77 |
| 2026-04-06 00:00 |
01:59:24.78 |
+33:21:02.8 |
HIP 9269 |
9.24 |
| 2026-04-06 12:00 |
01:59:28.71 |
+33:21:13.4 |
HIP 9269 |
9.77 |
| 2026-04-07 00:00 |
01:59:32.66 |
+33:21:24.1 |
HIP 9269 |
10.34 |
| 2026-04-07 12:00 |
01:59:36.61 |
+33:21:35.1 |
HIP 9269 |
10.95 |
| 2026-04-08 00:00 |
01:59:40.57 |
+33:21:46.3 |
HIP 9269 |
11.59 |
| 2026-04-08 12:00 |
01:59:44.54 |
+33:21:57.7 |
HIP 9269 |
12.26 |
| 2026-04-09 00:00 |
01:59:48.52 |
+33:22:09.3 |
HIP 9269 |
12.96 |
| 2026-04-09 12:00 |
01:59:52.51 |
+33:22:21.1 |
HIP 9269 |
13.68 |
| 2026-04-10 00:00 |
01:59:56.50 |
+33:22:33.1 |
HIP 9269 |
14.41 |
| 2026-04-10 12:00 |
02:00:00.50 |
+33:22:45.4 |
HIP 9269 |
15.17 |
| 2026-04-11 00:00 |
02:00:04.51 |
+33:22:57.8 |
HIP 9269 |
15.93 |
| 2026-04-11 12:00 |
02:00:08.53 |
+33:23:10.4 |
HIP 9269 |
16.71 |
| 2026-04-12 00:00 |
02:00:12.55 |
+33:23:23.2 |
HIP 9269 |
17.50 |
| 2026-04-12 12:00 |
02:00:16.58 |
+33:23:36.3 |
HIP 9269 |
18.30 |
| 2026-04-13 00:00 |
02:00:20.61 |
+33:23:49.5 |
HIP 9269 |
19.11 |
| 2026-04-13 12:00 |
02:00:24.65 |
+33:24:02.9 |
HIP 9269 |
19.93 |
| 2026-04-14 00:00 |
02:00:28.70 |
+33:24:16.5 |
HIP 9269 |
20.76 |
| 2026-04-14 12:00 |
02:00:32.75 |
+33:24:30.3 |
HIP 9501 |
21.01 |
| 2026-04-15 00:00 |
02:00:36.81 |
+33:24:44.3 |
HIP 9501 |
20.17 |
| 2026-04-15 12:00 |
02:00:40.87 |
+33:24:58.5 |
HIP 9501 |
19.32 |
| 2026-04-16 00:00 |
02:00:44.93 |
+33:25:12.9 |
HIP 9501 |
18.48 |