メタデータ
| 項目 |
値 |
| Designation |
C/2020 H3 (Wierzchos) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2020-06-03T13:35:43.509120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:34:05Z |
| Obs used |
131 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
27.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2020-06-11.0000000 |
| e |
1.00221882 |
| q (au) |
2.304388 |
| a (au) |
-1038.566850 |
| i (deg) |
62.368384 |
| Ω (om, deg) |
270.569348 |
| ω (w, deg) |
29.607609 |
| M (ma, deg) |
0.000219 |
等級
散乱 + 全体線形
$$
M_a = (11.149 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.149 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.916 |
| 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) |
| 2026-03-26 00:00 |
05:12:14.46 |
+35:57:09.2 |
HIP 24184 |
8.19 |
| 2026-03-26 12:00 |
05:12:17.63 |
+35:56:36.5 |
HIP 24184 |
8.86 |
| 2026-03-27 00:00 |
05:12:20.88 |
+35:56:03.9 |
HIP 24184 |
9.58 |
| 2026-03-27 12:00 |
05:12:24.19 |
+35:55:31.5 |
HIP 24184 |
10.33 |
| 2026-03-28 00:00 |
05:12:27.57 |
+35:54:59.3 |
HIP 24184 |
11.11 |
| 2026-03-28 12:00 |
05:12:31.01 |
+35:54:27.3 |
HIP 24184 |
11.92 |
| 2026-03-29 00:00 |
05:12:34.53 |
+35:53:55.4 |
HIP 24184 |
12.74 |
| 2026-03-29 12:00 |
05:12:38.11 |
+35:53:23.8 |
HIP 24184 |
13.59 |
| 2026-03-30 00:00 |
05:12:41.75 |
+35:52:52.2 |
HIP 24184 |
14.45 |
| 2026-03-30 12:00 |
05:12:45.46 |
+35:52:20.9 |
HIP 24356 |
14.47 |
| 2026-03-31 00:00 |
05:12:49.24 |
+35:51:49.7 |
HIP 24356 |
13.56 |
| 2026-03-31 12:00 |
05:12:53.08 |
+35:51:18.7 |
HIP 24356 |
12.65 |
| 2026-04-01 00:00 |
05:12:56.98 |
+35:50:47.9 |
HIP 24356 |
11.74 |
| 2026-04-01 12:00 |
05:13:00.95 |
+35:50:17.3 |
HIP 24356 |
10.83 |
| 2026-04-02 00:00 |
05:13:04.99 |
+35:49:46.8 |
HIP 24356 |
9.91 |
| 2026-04-02 12:00 |
05:13:09.08 |
+35:49:16.5 |
HIP 24356 |
9.01 |
| 2026-04-03 00:00 |
05:13:13.24 |
+35:48:46.4 |
HIP 24356 |
8.11 |
| 2026-04-03 12:00 |
05:13:17.46 |
+35:48:16.5 |
HIP 24356 |
7.23 |
| 2026-04-04 00:00 |
05:13:21.75 |
+35:47:46.7 |
HIP 24356 |
6.38 |
| 2026-04-04 12:00 |
05:13:26.09 |
+35:47:17.1 |
HIP 24356 |
5.58 |
| 2026-04-05 00:00 |
05:13:30.50 |
+35:46:47.7 |
HIP 24356 |
4.86 |
| 2026-04-05 12:00 |
05:13:34.97 |
+35:46:18.5 |
HIP 24356 |
4.26 |
| 2026-04-06 00:00 |
05:13:39.49 |
+35:45:49.4 |
HIP 24356 |
3.85 |
| 2026-04-06 12:00 |
05:13:44.08 |
+35:45:20.5 |
HIP 24356 |
3.71 |
| 2026-04-07 00:00 |
05:13:48.73 |
+35:44:51.8 |
HIP 24356 |
3.88 |
| 2026-04-07 12:00 |
05:13:53.44 |
+35:44:23.3 |
HIP 24356 |
4.31 |
| 2026-04-08 00:00 |
05:13:58.21 |
+35:43:55.0 |
HIP 24356 |
4.95 |
| 2026-04-08 12:00 |
05:14:03.03 |
+35:43:26.8 |
HIP 24356 |
5.74 |
| 2026-04-09 00:00 |
05:14:07.92 |
+35:42:58.9 |
HIP 24356 |
6.63 |
| 2026-04-09 12:00 |
05:14:12.86 |
+35:42:31.1 |
HIP 24356 |
7.58 |
| 2026-04-10 00:00 |
05:14:17.86 |
+35:42:03.5 |
HIP 24356 |
8.58 |
| 2026-04-10 12:00 |
05:14:22.92 |
+35:41:36.0 |
HIP 24356 |
9.62 |
| 2026-04-11 00:00 |
05:14:28.04 |
+35:41:08.8 |
HIP 24356 |
10.69 |
| 2026-04-11 12:00 |
05:14:33.21 |
+35:40:41.7 |
HIP 24356 |
11.78 |
| 2026-04-12 00:00 |
05:14:38.44 |
+35:40:14.8 |
HIP 24356 |
12.89 |
| 2026-04-12 12:00 |
05:14:43.72 |
+35:39:48.1 |
HIP 24356 |
14.02 |
| 2026-04-13 00:00 |
05:14:49.06 |
+35:39:21.6 |
HIP 24356 |
15.16 |
| 2026-04-13 12:00 |
05:14:54.45 |
+35:38:55.2 |
HIP 24356 |
16.32 |
| 2026-04-14 00:00 |
05:14:59.90 |
+35:38:29.1 |
HIP 24464 |
17.03 |
| 2026-04-14 12:00 |
05:15:05.41 |
+35:38:03.1 |
HIP 24464 |
16.65 |
| 2026-04-15 00:00 |
05:15:10.96 |
+35:37:37.3 |
HIP 24464 |
16.35 |
| 2026-04-15 12:00 |
05:15:16.57 |
+35:37:11.7 |
HIP 24464 |
16.14 |
| 2026-04-16 00:00 |
05:15:22.24 |
+35:36:46.3 |
HIP 24464 |
16.03 |