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) |
| 2026-06-01 00:00 |
03:54:19.80 |
-48:12:45.4 |
HIP 18054 |
28.63 |
| 2026-06-01 12:00 |
03:54:25.55 |
-48:12:45.2 |
HIP 18469 |
29.00 |
| 2026-06-02 00:00 |
03:54:31.30 |
-48:12:45.4 |
HIP 18469 |
28.21 |
| 2026-06-02 12:00 |
03:54:37.04 |
-48:12:46.0 |
HIP 18469 |
27.42 |
| 2026-06-03 00:00 |
03:54:42.78 |
-48:12:47.0 |
HIP 18469 |
26.64 |
| 2026-06-03 12:00 |
03:54:48.50 |
-48:12:48.5 |
HIP 18469 |
25.87 |
| 2026-06-04 00:00 |
03:54:54.22 |
-48:12:50.5 |
HIP 18469 |
25.11 |
| 2026-06-04 12:00 |
03:54:59.93 |
-48:12:52.8 |
HIP 18469 |
24.35 |
| 2026-06-05 00:00 |
03:55:05.62 |
-48:12:55.6 |
HIP 18469 |
23.61 |
| 2026-06-05 12:00 |
03:55:11.31 |
-48:12:58.8 |
HIP 18469 |
22.88 |
| 2026-06-06 00:00 |
03:55:16.99 |
-48:13:02.4 |
HIP 18469 |
22.16 |
| 2026-06-06 12:00 |
03:55:22.65 |
-48:13:06.5 |
HIP 18469 |
21.46 |
| 2026-06-07 00:00 |
03:55:28.31 |
-48:13:11.0 |
HIP 18469 |
20.77 |
| 2026-06-07 12:00 |
03:55:33.95 |
-48:13:15.9 |
HIP 18469 |
20.09 |
| 2026-06-08 00:00 |
03:55:39.59 |
-48:13:21.2 |
HIP 18469 |
19.43 |
| 2026-06-08 12:00 |
03:55:45.21 |
-48:13:27.0 |
HIP 18469 |
18.80 |
| 2026-06-09 00:00 |
03:55:50.82 |
-48:13:33.2 |
HIP 18469 |
18.18 |
| 2026-06-09 12:00 |
03:55:56.42 |
-48:13:39.8 |
HIP 18469 |
17.59 |
| 2026-06-10 00:00 |
03:56:02.00 |
-48:13:46.9 |
HIP 18469 |
17.02 |
| 2026-06-10 12:00 |
03:56:07.57 |
-48:13:54.4 |
HIP 18469 |
16.49 |
| 2026-06-11 00:00 |
03:56:13.13 |
-48:14:02.3 |
HIP 18469 |
15.98 |
| 2026-06-11 12:00 |
03:56:18.67 |
-48:14:10.6 |
HIP 18469 |
15.51 |
| 2026-06-12 00:00 |
03:56:24.20 |
-48:14:19.4 |
HIP 18469 |
15.07 |
| 2026-06-12 12:00 |
03:56:29.72 |
-48:14:28.6 |
HIP 18469 |
14.67 |
| 2026-06-13 00:00 |
03:56:35.22 |
-48:14:38.2 |
HIP 18469 |
14.32 |
| 2026-06-13 12:00 |
03:56:40.70 |
-48:14:48.2 |
HIP 18469 |
14.01 |
| 2026-06-14 00:00 |
03:56:46.17 |
-48:14:58.7 |
HIP 18469 |
13.75 |
| 2026-06-14 12:00 |
03:56:51.62 |
-48:15:09.5 |
HIP 18469 |
13.54 |
| 2026-06-15 00:00 |
03:56:57.06 |
-48:15:20.8 |
HIP 18469 |
13.39 |
| 2026-06-15 12:00 |
03:57:02.48 |
-48:15:32.5 |
HIP 18556 |
13.27 |
| 2026-06-16 00:00 |
03:57:07.88 |
-48:15:44.7 |
HIP 18556 |
12.54 |
| 2026-06-16 12:00 |
03:57:13.27 |
-48:15:57.2 |
HIP 18556 |
11.84 |
| 2026-06-17 00:00 |
03:57:18.64 |
-48:16:10.2 |
HIP 18556 |
11.18 |
| 2026-06-17 12:00 |
03:57:23.99 |
-48:16:23.6 |
HIP 18556 |
10.56 |
| 2026-06-18 00:00 |
03:57:29.32 |
-48:16:37.4 |
HIP 18556 |
10.00 |
| 2026-06-18 12:00 |
03:57:34.63 |
-48:16:51.6 |
HIP 18556 |
9.50 |
| 2026-06-19 00:00 |
03:57:39.92 |
-48:17:06.2 |
HIP 18556 |
9.07 |
| 2026-06-19 12:00 |
03:57:45.20 |
-48:17:21.2 |
HIP 18556 |
8.73 |
| 2026-06-20 00:00 |
03:57:50.45 |
-48:17:36.6 |
HIP 18556 |
8.48 |
| 2026-06-20 12:00 |
03:57:55.68 |
-48:17:52.5 |
HIP 18556 |
8.33 |
| 2026-06-21 00:00 |
03:58:00.90 |
-48:18:08.7 |
HIP 18556 |
8.28 |
| 2026-06-21 12:00 |
03:58:06.09 |
-48:18:25.4 |
HIP 18556 |
8.34 |
| 2026-06-22 00:00 |
03:58:11.26 |
-48:18:42.4 |
HIP 18556 |
8.51 |