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) |
| 2026-05-12 00:00 |
13:06:50.56 |
-09:39:38.1 |
HIP 64181 |
36.18 |
| 2026-05-12 12:00 |
13:06:39.71 |
-09:38:26.9 |
HIP 64181 |
38.60 |
| 2026-05-13 00:00 |
13:06:29.04 |
-09:37:16.6 |
HIP 64181 |
41.04 |
| 2026-05-13 12:00 |
13:06:18.55 |
-09:36:07.3 |
HIP 64181 |
43.49 |
| 2026-05-14 00:00 |
13:06:08.26 |
-09:34:59.0 |
HIP 63873 |
45.66 |
| 2026-05-14 12:00 |
13:05:58.15 |
-09:33:51.6 |
HIP 63873 |
46.27 |
| 2026-05-15 00:00 |
13:05:48.24 |
-09:32:45.2 |
HIP 63873 |
47.03 |
| 2026-05-15 12:00 |
13:05:38.53 |
-09:31:39.9 |
HIP 63873 |
47.91 |
| 2026-05-16 00:00 |
13:05:29.01 |
-09:30:35.6 |
HIP 63873 |
48.90 |
| 2026-05-16 12:00 |
13:05:19.68 |
-09:29:32.3 |
HIP 63873 |
49.99 |
| 2026-05-17 00:00 |
13:05:10.56 |
-09:28:30.1 |
HIP 63873 |
51.15 |
| 2026-05-17 12:00 |
13:05:01.64 |
-09:27:29.0 |
HIP 63573 |
50.71 |
| 2026-05-18 00:00 |
13:04:52.92 |
-09:26:28.9 |
HIP 63573 |
48.85 |
| 2026-05-18 12:00 |
13:04:44.41 |
-09:25:30.0 |
HIP 63573 |
47.08 |
| 2026-05-19 00:00 |
13:04:36.10 |
-09:24:32.1 |
HIP 63573 |
45.41 |
| 2026-05-19 12:00 |
13:04:28.01 |
-09:23:35.4 |
HIP 63573 |
43.82 |
| 2026-05-20 00:00 |
13:04:20.12 |
-09:22:39.8 |
HIP 63573 |
42.33 |
| 2026-05-20 12:00 |
13:04:12.44 |
-09:21:45.4 |
HIP 63573 |
40.95 |
| 2026-05-21 00:00 |
13:04:04.97 |
-09:20:52.1 |
HIP 63573 |
39.66 |
| 2026-05-21 12:00 |
13:03:57.71 |
-09:20:00.0 |
HIP 63573 |
38.47 |
| 2026-05-22 00:00 |
13:03:50.67 |
-09:19:09.0 |
HIP 63573 |
37.39 |
| 2026-05-22 12:00 |
13:03:43.84 |
-09:18:19.2 |
HIP 63573 |
36.41 |
| 2026-05-23 00:00 |
13:03:37.22 |
-09:17:30.6 |
HIP 63573 |
35.53 |
| 2026-05-23 12:00 |
13:03:30.83 |
-09:16:43.2 |
HIP 63573 |
34.76 |
| 2026-05-24 00:00 |
13:03:24.64 |
-09:15:57.0 |
HIP 63573 |
34.09 |
| 2026-05-24 12:00 |
13:03:18.68 |
-09:15:12.0 |
HIP 63573 |
33.51 |
| 2026-05-25 00:00 |
13:03:12.93 |
-09:14:28.3 |
HIP 63573 |
33.03 |
| 2026-05-25 12:00 |
13:03:07.41 |
-09:13:45.7 |
HIP 63573 |
32.65 |
| 2026-05-26 00:00 |
13:03:02.10 |
-09:13:04.4 |
HIP 63573 |
32.34 |
| 2026-05-26 12:00 |
13:02:57.01 |
-09:12:24.4 |
HIP 63573 |
32.12 |
| 2026-05-27 00:00 |
13:02:52.14 |
-09:11:45.5 |
HIP 63573 |
31.97 |
| 2026-05-27 12:00 |
13:02:47.49 |
-09:11:08.0 |
HIP 63573 |
31.89 |
| 2026-05-28 00:00 |
13:02:43.07 |
-09:10:31.6 |
HIP 63573 |
31.87 |
| 2026-05-28 12:00 |
13:02:38.86 |
-09:09:56.6 |
HIP 63573 |
31.90 |
| 2026-05-29 00:00 |
13:02:34.88 |
-09:09:22.8 |
HIP 63486 |
31.12 |
| 2026-05-29 12:00 |
13:02:31.11 |
-09:08:50.2 |
HIP 63486 |
30.14 |
| 2026-05-30 00:00 |
13:02:27.57 |
-09:08:18.9 |
HIP 63486 |
29.22 |
| 2026-05-30 12:00 |
13:02:24.26 |
-09:07:49.0 |
HIP 63486 |
28.37 |
| 2026-05-31 00:00 |
13:02:21.16 |
-09:07:20.2 |
HIP 63486 |
27.58 |
| 2026-05-31 12:00 |
13:02:18.29 |
-09:06:52.8 |
HIP 63486 |
26.86 |
| 2026-06-01 00:00 |
13:02:15.65 |
-09:06:26.7 |
HIP 63486 |
26.19 |
| 2026-06-01 12:00 |
13:02:13.22 |
-09:06:01.8 |
HIP 63486 |
25.59 |
| 2026-06-02 00:00 |
13:02:11.02 |
-09:05:38.3 |
HIP 63486 |
25.05 |