メタデータ
| 項目 |
値 |
| Designation |
C/2003 F1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-06-28T11:02:31.318080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:27Z |
| Obs used |
1150 |
| NEO |
- |
| M1 |
8.300 |
| 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) |
2003-05-31.0000000 |
| e |
0.80603402 |
| q (au) |
4.007799 |
| a (au) |
20.662380 |
| i (deg) |
70.221513 |
| Ω (om, deg) |
87.487652 |
| ω (w, deg) |
121.188132 |
| M (ma, deg) |
359.701345 |
等級
散乱 + 全体線形
$$
M_a = (4.239 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.239 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
03:42:38.75 |
-49:14:54.6 |
HIP 17302 |
7.13 |
| 2026-03-26 12:00 |
03:42:42.46 |
-49:14:03.6 |
HIP 17302 |
6.86 |
| 2026-03-27 00:00 |
03:42:46.21 |
-49:13:12.9 |
HIP 17302 |
6.75 |
| 2026-03-27 12:00 |
03:42:50.00 |
-49:12:22.4 |
HIP 17302 |
6.80 |
| 2026-03-28 00:00 |
03:42:53.82 |
-49:11:32.2 |
HIP 17302 |
7.03 |
| 2026-03-28 12:00 |
03:42:57.68 |
-49:10:42.2 |
HIP 17302 |
7.40 |
| 2026-03-29 00:00 |
03:43:01.57 |
-49:09:52.6 |
HIP 17302 |
7.90 |
| 2026-03-29 12:00 |
03:43:05.50 |
-49:09:03.2 |
HIP 17302 |
8.50 |
| 2026-03-30 00:00 |
03:43:09.47 |
-49:08:14.0 |
HIP 17302 |
9.19 |
| 2026-03-30 12:00 |
03:43:13.47 |
-49:07:25.1 |
HIP 17302 |
9.95 |
| 2026-03-31 00:00 |
03:43:17.50 |
-49:06:36.6 |
HIP 17302 |
10.76 |
| 2026-03-31 12:00 |
03:43:21.57 |
-49:05:48.2 |
HIP 17302 |
11.61 |
| 2026-04-01 00:00 |
03:43:25.67 |
-49:05:00.2 |
HIP 17302 |
12.50 |
| 2026-04-01 12:00 |
03:43:29.80 |
-49:04:12.5 |
HIP 17302 |
13.41 |
| 2026-04-02 00:00 |
03:43:33.97 |
-49:03:25.0 |
HIP 17302 |
14.34 |
| 2026-04-02 12:00 |
03:43:38.17 |
-49:02:37.8 |
HIP 17302 |
15.30 |
| 2026-04-03 00:00 |
03:43:42.40 |
-49:01:50.9 |
HIP 17302 |
16.26 |
| 2026-04-03 12:00 |
03:43:46.67 |
-49:01:04.4 |
HIP 17302 |
17.24 |
| 2026-04-04 00:00 |
03:43:50.97 |
-49:00:18.1 |
HIP 17302 |
18.23 |
| 2026-04-04 12:00 |
03:43:55.30 |
-48:59:32.1 |
HIP 17302 |
19.22 |
| 2026-04-05 00:00 |
03:43:59.66 |
-48:58:46.4 |
HIP 17302 |
20.22 |
| 2026-04-05 12:00 |
03:44:04.05 |
-48:58:01.0 |
HIP 17302 |
21.23 |
| 2026-04-06 00:00 |
03:44:08.47 |
-48:57:15.9 |
HIP 17302 |
22.25 |
| 2026-04-06 12:00 |
03:44:12.93 |
-48:56:31.1 |
HIP 17302 |
23.26 |
| 2026-04-07 00:00 |
03:44:17.41 |
-48:55:46.6 |
HIP 17302 |
24.29 |
| 2026-04-07 12:00 |
03:44:21.92 |
-48:55:02.5 |
HIP 17302 |
25.31 |
| 2026-04-08 00:00 |
03:44:26.47 |
-48:54:18.6 |
HIP 17302 |
26.34 |
| 2026-04-08 12:00 |
03:44:31.04 |
-48:53:35.1 |
HIP 17302 |
27.37 |
| 2026-04-09 00:00 |
03:44:35.64 |
-48:52:51.9 |
HIP 17302 |
28.40 |
| 2026-04-09 12:00 |
03:44:40.27 |
-48:52:09.0 |
HIP 17302 |
29.44 |
| 2026-04-10 00:00 |
03:44:44.93 |
-48:51:26.5 |
HIP 17302 |
30.47 |
| 2026-04-10 12:00 |
03:44:49.62 |
-48:50:44.2 |
HIP 17302 |
31.51 |
| 2026-04-11 00:00 |
03:44:54.33 |
-48:50:02.3 |
HIP 17302 |
32.55 |
| 2026-04-11 12:00 |
03:44:59.08 |
-48:49:20.8 |
HIP 17302 |
33.59 |
| 2026-04-12 00:00 |
03:45:03.85 |
-48:48:39.5 |
HIP 17302 |
34.63 |
| 2026-04-12 12:00 |
03:45:08.65 |
-48:47:58.6 |
HIP 17768 |
34.94 |
| 2026-04-13 00:00 |
03:45:13.47 |
-48:47:18.1 |
HIP 17768 |
34.60 |
| 2026-04-13 12:00 |
03:45:18.32 |
-48:46:37.9 |
HIP 17768 |
34.27 |
| 2026-04-14 00:00 |
03:45:23.20 |
-48:45:58.0 |
HIP 17768 |
33.96 |
| 2026-04-14 12:00 |
03:45:28.10 |
-48:45:18.5 |
HIP 17768 |
33.68 |
| 2026-04-15 00:00 |
03:45:33.03 |
-48:44:39.3 |
HIP 17768 |
33.42 |
| 2026-04-15 12:00 |
03:45:37.98 |
-48:44:00.5 |
HIP 17768 |
33.19 |
| 2026-04-16 00:00 |
03:45:42.96 |
-48:43:22.0 |
HIP 17768 |
32.97 |