メタデータ
| 項目 |
値 |
| Designation |
C/2003 H2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-05-17T23:15:08.225280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:29Z |
| Obs used |
189 |
| NEO |
- |
| M1 |
14.200 |
| 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) |
2003-05-22.0000000 |
| e |
0.94291012 |
| q (au) |
2.178516 |
| a (au) |
38.159402 |
| i (deg) |
74.217540 |
| Ω (om, deg) |
79.838018 |
| ω (w, deg) |
155.082163 |
| M (ma, deg) |
0.016855 |
等級
散乱 + 全体線形
$$
M_a = (14.725 + 2.527\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.725 |
| n |
2.527 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.999 |
| 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 |
04:41:24.94 |
-19:42:49.7 |
HIP 21763 |
13.99 |
| 2026-06-01 12:00 |
04:41:28.17 |
-19:42:41.8 |
HIP 21763 |
14.72 |
| 2026-06-02 00:00 |
04:41:31.40 |
-19:42:34.2 |
HIP 21763 |
15.45 |
| 2026-06-02 12:00 |
04:41:34.63 |
-19:42:26.7 |
HIP 21763 |
16.18 |
| 2026-06-03 00:00 |
04:41:37.86 |
-19:42:19.6 |
HIP 21763 |
16.92 |
| 2026-06-03 12:00 |
04:41:41.09 |
-19:42:12.7 |
HIP 21763 |
17.66 |
| 2026-06-04 00:00 |
04:41:44.31 |
-19:42:06.0 |
HIP 21763 |
18.41 |
| 2026-06-04 12:00 |
04:41:47.54 |
-19:41:59.6 |
HIP 21763 |
19.15 |
| 2026-06-05 00:00 |
04:41:50.77 |
-19:41:53.5 |
HIP 21763 |
19.90 |
| 2026-06-05 12:00 |
04:41:53.99 |
-19:41:47.6 |
HIP 21763 |
20.65 |
| 2026-06-06 00:00 |
04:41:57.22 |
-19:41:42.0 |
HIP 21763 |
21.40 |
| 2026-06-06 12:00 |
04:42:00.44 |
-19:41:36.6 |
HIP 21763 |
22.16 |
| 2026-06-07 00:00 |
04:42:03.66 |
-19:41:31.4 |
HIP 21763 |
22.91 |
| 2026-06-07 12:00 |
04:42:06.88 |
-19:41:26.6 |
HIP 21763 |
23.66 |
| 2026-06-08 00:00 |
04:42:10.10 |
-19:41:22.0 |
HIP 21763 |
24.41 |
| 2026-06-08 12:00 |
04:42:13.32 |
-19:41:17.6 |
HIP 21763 |
25.17 |
| 2026-06-09 00:00 |
04:42:16.53 |
-19:41:13.5 |
HIP 21763 |
25.92 |
| 2026-06-09 12:00 |
04:42:19.74 |
-19:41:09.7 |
HIP 21763 |
26.67 |
| 2026-06-10 00:00 |
04:42:22.95 |
-19:41:06.1 |
HIP 21763 |
27.43 |
| 2026-06-10 12:00 |
04:42:26.15 |
-19:41:02.7 |
HIP 21919 |
27.88 |
| 2026-06-11 00:00 |
04:42:29.36 |
-19:40:59.7 |
HIP 21919 |
27.79 |
| 2026-06-11 12:00 |
04:42:32.55 |
-19:40:56.8 |
HIP 21919 |
27.72 |
| 2026-06-12 00:00 |
04:42:35.75 |
-19:40:54.3 |
HIP 21919 |
27.67 |
| 2026-06-12 12:00 |
04:42:38.94 |
-19:40:52.0 |
HIP 21919 |
27.64 |
| 2026-06-13 00:00 |
04:42:42.13 |
-19:40:49.9 |
HIP 21919 |
27.62 |
| 2026-06-13 12:00 |
04:42:45.31 |
-19:40:48.1 |
HIP 21919 |
27.61 |
| 2026-06-14 00:00 |
04:42:48.49 |
-19:40:46.6 |
HIP 21919 |
27.63 |
| 2026-06-14 12:00 |
04:42:51.66 |
-19:40:45.3 |
HIP 21919 |
27.65 |
| 2026-06-15 00:00 |
04:42:54.83 |
-19:40:44.3 |
HIP 21919 |
27.70 |
| 2026-06-15 12:00 |
04:42:57.99 |
-19:40:43.6 |
HIP 21919 |
27.76 |
| 2026-06-16 00:00 |
04:43:01.15 |
-19:40:43.1 |
HIP 21919 |
27.83 |
| 2026-06-16 12:00 |
04:43:04.30 |
-19:40:42.8 |
HIP 21919 |
27.92 |
| 2026-06-17 00:00 |
04:43:07.44 |
-19:40:42.9 |
HIP 21919 |
28.03 |
| 2026-06-17 12:00 |
04:43:10.58 |
-19:40:43.1 |
HIP 21919 |
28.15 |
| 2026-06-18 00:00 |
04:43:13.71 |
-19:40:43.7 |
HIP 21919 |
28.28 |
| 2026-06-18 12:00 |
04:43:16.84 |
-19:40:44.5 |
HIP 21919 |
28.43 |
| 2026-06-19 00:00 |
04:43:19.96 |
-19:40:45.5 |
HIP 22064 |
28.57 |
| 2026-06-19 12:00 |
04:43:23.07 |
-19:40:46.8 |
HIP 22064 |
28.04 |
| 2026-06-20 00:00 |
04:43:26.18 |
-19:40:48.4 |
HIP 22064 |
27.51 |
| 2026-06-20 12:00 |
04:43:29.27 |
-19:40:50.2 |
HIP 22064 |
27.00 |
| 2026-06-21 00:00 |
04:43:32.37 |
-19:40:52.2 |
HIP 22064 |
26.49 |
| 2026-06-21 12:00 |
04:43:35.45 |
-19:40:54.6 |
HIP 22064 |
25.99 |
| 2026-06-22 00:00 |
04:43:38.52 |
-19:40:57.1 |
HIP 22064 |
25.50 |