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) |
| 2026-05-12 00:00 |
05:01:52.84 |
+09:48:58.4 |
HIP 23418 |
10.13 |
| 2026-05-12 12:00 |
05:01:56.42 |
+09:49:12.2 |
HIP 23418 |
9.81 |
| 2026-05-13 00:00 |
05:02:00.02 |
+09:49:25.9 |
HIP 23418 |
9.57 |
| 2026-05-13 12:00 |
05:02:03.62 |
+09:49:39.5 |
HIP 23418 |
9.42 |
| 2026-05-14 00:00 |
05:02:07.24 |
+09:49:53.0 |
HIP 23418 |
9.35 |
| 2026-05-14 12:00 |
05:02:10.87 |
+09:50:06.5 |
HIP 23418 |
9.38 |
| 2026-05-15 00:00 |
05:02:14.51 |
+09:50:19.8 |
HIP 23418 |
9.49 |
| 2026-05-15 12:00 |
05:02:18.17 |
+09:50:33.0 |
HIP 23418 |
9.70 |
| 2026-05-16 00:00 |
05:02:21.83 |
+09:50:46.2 |
HIP 23418 |
10.00 |
| 2026-05-16 12:00 |
05:02:25.51 |
+09:50:59.3 |
HIP 23418 |
10.37 |
| 2026-05-17 00:00 |
05:02:29.20 |
+09:51:12.3 |
HIP 23418 |
10.81 |
| 2026-05-17 12:00 |
05:02:32.90 |
+09:51:25.1 |
HIP 23418 |
11.31 |
| 2026-05-18 00:00 |
05:02:36.61 |
+09:51:37.9 |
HIP 23418 |
11.87 |
| 2026-05-18 12:00 |
05:02:40.32 |
+09:51:50.6 |
HIP 23418 |
12.48 |
| 2026-05-19 00:00 |
05:02:44.05 |
+09:52:03.3 |
HIP 23418 |
13.13 |
| 2026-05-19 12:00 |
05:02:47.79 |
+09:52:15.8 |
HIP 23461 |
13.68 |
| 2026-05-20 00:00 |
05:02:51.54 |
+09:52:28.2 |
HIP 23461 |
14.15 |
| 2026-05-20 12:00 |
05:02:55.29 |
+09:52:40.5 |
HIP 23461 |
14.66 |
| 2026-05-21 00:00 |
05:02:59.06 |
+09:52:52.7 |
HIP 23461 |
15.21 |
| 2026-05-21 12:00 |
05:03:02.83 |
+09:53:04.9 |
HIP 23461 |
15.80 |
| 2026-05-22 00:00 |
05:03:06.62 |
+09:53:16.9 |
HIP 23461 |
16.43 |
| 2026-05-22 12:00 |
05:03:10.41 |
+09:53:28.8 |
HIP 23461 |
17.08 |
| 2026-05-23 00:00 |
05:03:14.20 |
+09:53:40.7 |
HIP 23461 |
17.76 |
| 2026-05-23 12:00 |
05:03:18.01 |
+09:53:52.4 |
HIP 23461 |
18.47 |
| 2026-05-24 00:00 |
05:03:21.82 |
+09:54:04.1 |
HIP 23461 |
19.19 |
| 2026-05-24 12:00 |
05:03:25.64 |
+09:54:15.6 |
HIP 23461 |
19.94 |
| 2026-05-25 00:00 |
05:03:29.47 |
+09:54:27.1 |
HIP 23461 |
20.70 |
| 2026-05-25 12:00 |
05:03:33.30 |
+09:54:38.4 |
HIP 23599 |
21.16 |
| 2026-05-26 00:00 |
05:03:37.14 |
+09:54:49.6 |
HIP 23599 |
20.44 |
| 2026-05-26 12:00 |
05:03:40.98 |
+09:55:00.8 |
HIP 23599 |
19.74 |
| 2026-05-27 00:00 |
05:03:44.83 |
+09:55:11.8 |
HIP 23599 |
19.06 |
| 2026-05-27 12:00 |
05:03:48.69 |
+09:55:22.8 |
HIP 23599 |
18.40 |
| 2026-05-28 00:00 |
05:03:52.55 |
+09:55:33.6 |
HIP 23599 |
17.78 |
| 2026-05-28 12:00 |
05:03:56.42 |
+09:55:44.4 |
HIP 23599 |
17.19 |
| 2026-05-29 00:00 |
05:04:00.29 |
+09:55:55.0 |
HIP 23599 |
16.63 |
| 2026-05-29 12:00 |
05:04:04.16 |
+09:56:05.5 |
HIP 23599 |
16.12 |
| 2026-05-30 00:00 |
05:04:08.04 |
+09:56:16.0 |
HIP 23599 |
15.65 |
| 2026-05-30 12:00 |
05:04:11.93 |
+09:56:26.3 |
HIP 23599 |
15.23 |
| 2026-05-31 00:00 |
05:04:15.82 |
+09:56:36.5 |
HIP 23599 |
14.86 |
| 2026-05-31 12:00 |
05:04:19.71 |
+09:56:46.7 |
HIP 23599 |
14.55 |
| 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 |