メタデータ
| 項目 |
値 |
| Designation |
P/2004 FY140 (LINEAR) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2004-08-06T23:53:38.112000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:39Z |
| Obs used |
52 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2004-05-08.0000000 |
| e |
0.17089421 |
| q (au) |
4.106110 |
| a (au) |
4.952456 |
| i (deg) |
2.127781 |
| Ω (om, deg) |
327.293838 |
| ω (w, deg) |
239.757657 |
| M (ma, deg) |
351.862455 |
等級
散乱 + 全体線形
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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) |
| 2026-09-20 00:00 |
14:07:37.11 |
-14:46:24.2 |
HIP 68807 |
35.17 |
| 2026-09-20 12:00 |
14:08:08.68 |
-14:49:04.0 |
HIP 68937 |
42.38 |
| 2026-09-21 00:00 |
14:08:40.32 |
-14:51:43.9 |
HIP 69273 |
37.57 |
| 2026-09-21 12:00 |
14:09:12.04 |
-14:54:24.0 |
HIP 69273 |
29.72 |
| 2026-09-22 00:00 |
14:09:43.82 |
-14:57:04.1 |
HIP 69273 |
22.04 |
| 2026-09-22 12:00 |
14:10:15.68 |
-14:59:44.4 |
HIP 69273 |
14.83 |
| 2026-09-23 00:00 |
14:10:47.60 |
-15:02:24.8 |
HIP 69273 |
9.32 |
| 2026-09-23 12:00 |
14:11:19.60 |
-15:05:05.3 |
HIP 69312 |
7.67 |
| 2026-09-24 00:00 |
14:11:51.66 |
-15:07:45.8 |
HIP 69312 |
10.38 |
| 2026-09-24 12:00 |
14:12:23.80 |
-15:10:26.5 |
HIP 69312 |
17.06 |
| 2026-09-25 00:00 |
14:12:56.00 |
-15:13:07.2 |
HIP 69562 |
22.19 |
| 2026-09-25 12:00 |
14:13:28.27 |
-15:15:48.0 |
HIP 69562 |
13.97 |
| 2026-09-26 00:00 |
14:14:00.60 |
-15:18:28.9 |
HIP 69562 |
5.79 |
| 2026-09-26 12:00 |
14:14:33.01 |
-15:21:09.9 |
HIP 69562 |
2.78 |
| 2026-09-27 00:00 |
14:15:05.48 |
-15:23:50.9 |
HIP 69562 |
10.90 |
| 2026-09-27 12:00 |
14:15:38.01 |
-15:26:32.0 |
HIP 69562 |
19.16 |
| 2026-09-28 00:00 |
14:16:10.61 |
-15:29:13.1 |
HIP 69681 |
23.22 |
| 2026-09-28 12:00 |
14:16:43.27 |
-15:31:54.3 |
HIP 69681 |
28.47 |
| 2026-09-29 00:00 |
14:17:16.00 |
-15:34:35.5 |
HIP 69861 |
28.11 |
| 2026-09-29 12:00 |
14:17:48.80 |
-15:37:16.7 |
HIP 69861 |
24.27 |
| 2026-09-30 00:00 |
14:18:21.65 |
-15:39:58.0 |
HIP 69861 |
22.95 |
| 2026-09-30 12:00 |
14:18:54.57 |
-15:42:39.3 |
HIP 69861 |
24.59 |
| 2026-10-01 00:00 |
14:19:27.56 |
-15:45:20.6 |
HIP 69861 |
28.68 |
| 2026-10-01 12:00 |
14:20:00.60 |
-15:48:02.0 |
HIP 69861 |
34.37 |
| 2026-10-02 00:00 |
14:20:33.71 |
-15:50:43.4 |
HIP 70186 |
28.51 |
| 2026-10-02 12:00 |
14:21:06.88 |
-15:53:24.7 |
HIP 70186 |
22.77 |
| 2026-10-03 00:00 |
14:21:40.11 |
-15:56:06.1 |
HIP 70186 |
19.10 |
| 2026-10-03 12:00 |
14:22:13.40 |
-15:58:47.5 |
HIP 70186 |
18.81 |
| 2026-10-04 00:00 |
14:22:46.75 |
-16:01:28.8 |
HIP 70379 |
17.67 |
| 2026-10-04 12:00 |
14:23:20.16 |
-16:04:10.2 |
HIP 70379 |
9.23 |
| 2026-10-05 00:00 |
14:23:53.63 |
-16:06:51.6 |
HIP 70379 |
1.23 |
| 2026-10-05 12:00 |
14:24:27.16 |
-16:09:32.9 |
HIP 70379 |
7.86 |
| 2026-10-06 00:00 |
14:25:00.75 |
-16:12:14.2 |
HIP 70554 |
14.70 |
| 2026-10-06 12:00 |
14:25:34.39 |
-16:14:55.4 |
HIP 70554 |
6.25 |
| 2026-10-07 00:00 |
14:26:08.10 |
-16:17:36.7 |
HIP 70554 |
2.64 |
| 2026-10-07 12:00 |
14:26:41.86 |
-16:20:17.8 |
HIP 70554 |
10.97 |
| 2026-10-08 00:00 |
14:27:15.67 |
-16:22:59.0 |
HIP 70554 |
19.49 |
| 2026-10-08 12:00 |
14:27:49.54 |
-16:25:40.0 |
HIP 70756 |
19.82 |
| 2026-10-09 00:00 |
14:28:23.47 |
-16:28:21.1 |
HIP 70756 |
21.91 |
| 2026-10-09 12:00 |
14:28:57.45 |
-16:31:02.0 |
HIP 70756 |
26.73 |
| 2026-10-10 00:00 |
14:29:31.48 |
-16:33:42.9 |
HIP 70795 |
26.92 |
| 2026-10-10 12:00 |
14:30:05.57 |
-16:36:23.7 |
HIP 70795 |
29.39 |
| 2026-10-11 00:00 |
14:30:39.71 |
-16:39:04.4 |
HIP 71063 |
25.43 |