メタデータ
| 項目 |
値 |
| Designation |
C/2011 F1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-01-08T00:51:50.987520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:49Z |
| Obs used |
4591 |
| NEO |
- |
| M1 |
10.300 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-03-17.0000000 |
| e |
1.00004254 |
| q (au) |
1.818879 |
| a (au) |
-42756.084905 |
| i (deg) |
56.610768 |
| Ω (om, deg) |
85.118907 |
| ω (w, deg) |
192.564919 |
| M (ma, deg) |
-0.000033 |
等級
散乱 + 全体線形
$$
M_a = (12.403 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.403 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.769 |
| k |
0.800 |
| 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 |
| 2011-03-17 |
2012-11-04 |
+1.2116 |
-0.969 |
| 2013-03-19 |
2014-08-07 |
+5.4983 |
-0.920 |
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 |
05:04:23.60 |
+09:56:56.7 |
HIP 23599 |
14.30 |
| 2026-06-01 12:00 |
05:04:27.50 |
+09:57:06.6 |
HIP 23599 |
14.11 |
| 2026-06-02 00:00 |
05:04:31.41 |
+09:57:16.4 |
HIP 23599 |
14.00 |
| 2026-06-02 12:00 |
05:04:35.31 |
+09:57:26.1 |
HIP 23599 |
13.95 |
| 2026-06-03 00:00 |
05:04:39.22 |
+09:57:35.7 |
HIP 23599 |
13.97 |
| 2026-06-03 12:00 |
05:04:43.13 |
+09:57:45.2 |
HIP 23599 |
14.06 |
| 2026-06-04 00:00 |
05:04:47.04 |
+09:57:54.6 |
HIP 23599 |
14.22 |
| 2026-06-04 12:00 |
05:04:50.95 |
+09:58:03.9 |
HIP 23599 |
14.45 |
| 2026-06-05 00:00 |
05:04:54.87 |
+09:58:13.0 |
HIP 23599 |
14.74 |
| 2026-06-05 12:00 |
05:04:58.78 |
+09:58:22.1 |
HIP 23599 |
15.08 |
| 2026-06-06 00:00 |
05:05:02.70 |
+09:58:31.1 |
HIP 23599 |
15.49 |
| 2026-06-06 12:00 |
05:05:06.62 |
+09:58:39.9 |
HIP 23599 |
15.94 |
| 2026-06-07 00:00 |
05:05:10.54 |
+09:58:48.7 |
HIP 23599 |
16.44 |
| 2026-06-07 12:00 |
05:05:14.46 |
+09:58:57.3 |
HIP 23599 |
16.99 |
| 2026-06-08 00:00 |
05:05:18.38 |
+09:59:05.8 |
HIP 23599 |
17.57 |
| 2026-06-08 12:00 |
05:05:22.30 |
+09:59:14.2 |
HIP 23599 |
18.19 |
| 2026-06-09 00:00 |
05:05:26.22 |
+09:59:22.5 |
HIP 23599 |
18.84 |
| 2026-06-09 12:00 |
05:05:30.14 |
+09:59:30.7 |
HIP 23599 |
19.51 |
| 2026-06-10 00:00 |
05:05:34.06 |
+09:59:38.8 |
HIP 23599 |
20.22 |
| 2026-06-10 12:00 |
05:05:37.98 |
+09:59:46.8 |
HIP 23599 |
20.94 |
| 2026-06-11 00:00 |
05:05:41.89 |
+09:59:54.6 |
HIP 23599 |
21.69 |
| 2026-06-11 12:00 |
05:05:45.81 |
+10:00:02.4 |
HIP 23599 |
22.45 |
| 2026-06-12 00:00 |
05:05:49.72 |
+10:00:10.0 |
HIP 23599 |
23.23 |
| 2026-06-12 12:00 |
05:05:53.63 |
+10:00:17.5 |
HIP 23599 |
24.02 |
| 2026-06-13 00:00 |
05:05:57.54 |
+10:00:24.9 |
HIP 23599 |
24.83 |
| 2026-06-13 12:00 |
05:06:01.45 |
+10:00:32.2 |
HIP 23599 |
25.65 |
| 2026-06-14 00:00 |
05:06:05.35 |
+10:00:39.4 |
HIP 23599 |
26.48 |
| 2026-06-14 12:00 |
05:06:09.25 |
+10:00:46.5 |
HIP 23599 |
27.31 |
| 2026-06-15 00:00 |
05:06:13.15 |
+10:00:53.4 |
HIP 23599 |
28.16 |
| 2026-06-15 12:00 |
05:06:17.05 |
+10:01:00.3 |
HIP 23599 |
29.01 |
| 2026-06-16 00:00 |
05:06:20.94 |
+10:01:07.0 |
HIP 23599 |
29.87 |
| 2026-06-16 12:00 |
05:06:24.82 |
+10:01:13.6 |
HIP 23599 |
30.74 |
| 2026-06-17 00:00 |
05:06:28.70 |
+10:01:20.1 |
HIP 23599 |
31.61 |
| 2026-06-17 12:00 |
05:06:32.58 |
+10:01:26.5 |
HIP 23599 |
32.48 |
| 2026-06-18 00:00 |
05:06:36.45 |
+10:01:32.8 |
HIP 23599 |
33.36 |
| 2026-06-18 12:00 |
05:06:40.32 |
+10:01:38.9 |
HIP 23599 |
34.25 |
| 2026-06-19 00:00 |
05:06:44.18 |
+10:01:45.0 |
HIP 23599 |
35.13 |
| 2026-06-19 12:00 |
05:06:48.04 |
+10:01:50.9 |
HIP 23852 |
35.70 |
| 2026-06-20 00:00 |
05:06:51.89 |
+10:01:56.7 |
HIP 23852 |
35.48 |
| 2026-06-20 12:00 |
05:06:55.73 |
+10:02:02.4 |
HIP 23852 |
35.27 |
| 2026-06-21 00:00 |
05:06:59.57 |
+10:02:08.0 |
HIP 23852 |
35.09 |
| 2026-06-21 12:00 |
05:07:03.40 |
+10:02:13.4 |
HIP 23852 |
34.94 |
| 2026-06-22 00:00 |
05:07:07.22 |
+10:02:18.8 |
HIP 23852 |
34.80 |