メタデータ
| 項目 |
値 |
| Designation |
C/2004 H1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2004-01-15T07:05:39.554880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:40Z |
| Obs used |
71 |
| 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) |
2004-04-19.0000000 |
| e |
0.99989721 |
| q (au) |
2.080742 |
| a (au) |
20242.963449 |
| i (deg) |
140.672988 |
| Ω (om, deg) |
120.046982 |
| ω (w, deg) |
290.524558 |
| M (ma, deg) |
0.000032 |
等級
散乱 + 全体線形
$$
M_a = (17.724 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
17.724 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
01:08:02.13 |
+49:26:49.4 |
HIP 5262 |
10.18 |
| 2026-06-01 12:00 |
01:08:04.32 |
+49:27:16.9 |
HIP 5262 |
10.18 |
| 2026-06-02 00:00 |
01:08:06.48 |
+49:27:44.5 |
HIP 5262 |
10.21 |
| 2026-06-02 12:00 |
01:08:08.62 |
+49:28:12.2 |
HIP 5262 |
10.26 |
| 2026-06-03 00:00 |
01:08:10.74 |
+49:28:40.0 |
HIP 5262 |
10.34 |
| 2026-06-03 12:00 |
01:08:12.83 |
+49:29:07.8 |
HIP 5262 |
10.45 |
| 2026-06-04 00:00 |
01:08:14.89 |
+49:29:35.7 |
HIP 5262 |
10.58 |
| 2026-06-04 12:00 |
01:08:16.93 |
+49:30:03.6 |
HIP 5262 |
10.74 |
| 2026-06-05 00:00 |
01:08:18.94 |
+49:30:31.6 |
HIP 5262 |
10.92 |
| 2026-06-05 12:00 |
01:08:20.93 |
+49:30:59.6 |
HIP 5262 |
11.13 |
| 2026-06-06 00:00 |
01:08:22.89 |
+49:31:27.7 |
HIP 5262 |
11.35 |
| 2026-06-06 12:00 |
01:08:24.83 |
+49:31:55.8 |
HIP 5262 |
11.60 |
| 2026-06-07 00:00 |
01:08:26.74 |
+49:32:24.0 |
HIP 5262 |
11.86 |
| 2026-06-07 12:00 |
01:08:28.62 |
+49:32:52.2 |
HIP 5262 |
12.13 |
| 2026-06-08 00:00 |
01:08:30.47 |
+49:33:20.5 |
HIP 5262 |
12.42 |
| 2026-06-08 12:00 |
01:08:32.30 |
+49:33:48.8 |
HIP 5262 |
12.73 |
| 2026-06-09 00:00 |
01:08:34.11 |
+49:34:17.1 |
HIP 5262 |
13.05 |
| 2026-06-09 12:00 |
01:08:35.88 |
+49:34:45.5 |
HIP 5262 |
13.37 |
| 2026-06-10 00:00 |
01:08:37.63 |
+49:35:13.9 |
HIP 5262 |
13.71 |
| 2026-06-10 12:00 |
01:08:39.35 |
+49:35:42.4 |
HIP 5262 |
14.06 |
| 2026-06-11 00:00 |
01:08:41.04 |
+49:36:10.9 |
HIP 5262 |
14.42 |
| 2026-06-11 12:00 |
01:08:42.71 |
+49:36:39.4 |
HIP 5262 |
14.78 |
| 2026-06-12 00:00 |
01:08:44.34 |
+49:37:07.9 |
HIP 5262 |
15.15 |
| 2026-06-12 12:00 |
01:08:45.95 |
+49:37:36.5 |
HIP 5262 |
15.52 |
| 2026-06-13 00:00 |
01:08:47.53 |
+49:38:05.1 |
HIP 5262 |
15.91 |
| 2026-06-13 12:00 |
01:08:49.08 |
+49:38:33.7 |
HIP 5262 |
16.29 |
| 2026-06-14 00:00 |
01:08:50.61 |
+49:39:02.4 |
HIP 5262 |
16.68 |
| 2026-06-14 12:00 |
01:08:52.10 |
+49:39:31.0 |
HIP 5262 |
17.08 |
| 2026-06-15 00:00 |
01:08:53.57 |
+49:39:59.7 |
HIP 5262 |
17.47 |
| 2026-06-15 12:00 |
01:08:55.01 |
+49:40:28.4 |
HIP 5262 |
17.87 |
| 2026-06-16 00:00 |
01:08:56.41 |
+49:40:57.1 |
HIP 5262 |
18.27 |
| 2026-06-16 12:00 |
01:08:57.79 |
+49:41:25.8 |
HIP 5262 |
18.68 |
| 2026-06-17 00:00 |
01:08:59.14 |
+49:41:54.5 |
HIP 5262 |
19.09 |
| 2026-06-17 12:00 |
01:09:00.46 |
+49:42:23.2 |
HIP 5262 |
19.49 |
| 2026-06-18 00:00 |
01:09:01.75 |
+49:42:51.9 |
HIP 5262 |
19.90 |
| 2026-06-18 12:00 |
01:09:03.01 |
+49:43:20.7 |
HIP 5262 |
20.31 |
| 2026-06-19 00:00 |
01:09:04.24 |
+49:43:49.4 |
HIP 5262 |
20.72 |
| 2026-06-19 12:00 |
01:09:05.44 |
+49:44:18.1 |
HIP 5262 |
21.13 |
| 2026-06-20 00:00 |
01:09:06.61 |
+49:44:46.8 |
HIP 5262 |
21.54 |
| 2026-06-20 12:00 |
01:09:07.75 |
+49:45:15.5 |
HIP 5262 |
21.96 |
| 2026-06-21 00:00 |
01:09:08.86 |
+49:45:44.2 |
HIP 5262 |
22.37 |
| 2026-06-21 12:00 |
01:09:09.94 |
+49:46:12.9 |
HIP 5262 |
22.78 |
| 2026-06-22 00:00 |
01:09:10.99 |
+49:46:41.6 |
HIP 5262 |
23.19 |