メタデータ
| 項目 |
値 |
| Designation |
P/2010 H2 (Vales) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-03-09T08:27:45.460800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:42Z |
| Obs used |
1631 |
| NEO |
- |
| M1 |
7.000 |
| K1 |
10.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-05-08.0000000 |
| e |
0.19290772 |
| q (au) |
3.107734 |
| a (au) |
3.850532 |
| i (deg) |
14.252912 |
| Ω (om, deg) |
64.308899 |
| ω (w, deg) |
130.123335 |
| M (ma, deg) |
7.780625 |
等級
散乱 + 全体線形
$$
M_a = (6.977 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.977 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
18:39:24.01 |
-27:41:03.4 |
HIP 91460 |
29.87 |
| 2026-03-26 12:00 |
18:39:47.12 |
-27:42:26.7 |
HIP 91650 |
26.19 |
| 2026-03-27 00:00 |
18:40:09.99 |
-27:43:50.4 |
HIP 91650 |
21.32 |
| 2026-03-27 12:00 |
18:40:32.63 |
-27:45:14.6 |
HIP 91650 |
16.71 |
| 2026-03-28 00:00 |
18:40:55.02 |
-27:46:39.1 |
HIP 91650 |
12.59 |
| 2026-03-28 12:00 |
18:41:17.18 |
-27:48:04.1 |
HIP 91650 |
9.52 |
| 2026-03-29 00:00 |
18:41:39.10 |
-27:49:29.5 |
HIP 91650 |
8.63 |
| 2026-03-29 12:00 |
18:42:00.77 |
-27:50:55.3 |
HIP 91650 |
10.40 |
| 2026-03-30 00:00 |
18:42:22.20 |
-27:52:21.7 |
HIP 91650 |
13.79 |
| 2026-03-30 12:00 |
18:42:43.39 |
-27:53:48.4 |
HIP 91804 |
17.58 |
| 2026-03-31 00:00 |
18:43:04.33 |
-27:55:15.7 |
HIP 91804 |
15.26 |
| 2026-03-31 12:00 |
18:43:25.02 |
-27:56:43.4 |
HIP 91804 |
14.25 |
| 2026-04-01 00:00 |
18:43:45.46 |
-27:58:11.6 |
HIP 91804 |
14.77 |
| 2026-04-01 12:00 |
18:44:05.66 |
-27:59:40.3 |
HIP 91804 |
16.63 |
| 2026-04-02 00:00 |
18:44:25.60 |
-28:01:09.5 |
HIP 92004 |
15.43 |
| 2026-04-02 12:00 |
18:44:45.28 |
-28:02:39.2 |
HIP 92004 |
11.82 |
| 2026-04-03 00:00 |
18:45:04.72 |
-28:04:09.4 |
HIP 92004 |
9.13 |
| 2026-04-03 12:00 |
18:45:23.89 |
-28:05:40.1 |
HIP 92004 |
8.24 |
| 2026-04-04 00:00 |
18:45:42.81 |
-28:07:11.3 |
HIP 92004 |
9.57 |
| 2026-04-04 12:00 |
18:46:01.47 |
-28:08:43.1 |
HIP 92004 |
12.39 |
| 2026-04-05 00:00 |
18:46:19.87 |
-28:10:15.4 |
HIP 92004 |
15.87 |
| 2026-04-05 12:00 |
18:46:38.00 |
-28:11:48.3 |
HIP 92215 |
13.95 |
| 2026-04-06 00:00 |
18:46:55.87 |
-28:13:21.7 |
HIP 92215 |
9.71 |
| 2026-04-06 12:00 |
18:47:13.47 |
-28:14:55.7 |
HIP 92215 |
5.53 |
| 2026-04-07 00:00 |
18:47:30.81 |
-28:16:30.2 |
HIP 92215 |
1.42 |
| 2026-04-07 12:00 |
18:47:47.87 |
-28:18:05.3 |
HIP 92215 |
2.70 |
| 2026-04-08 00:00 |
18:48:04.67 |
-28:19:41.0 |
HIP 92215 |
6.72 |
| 2026-04-08 12:00 |
18:48:21.19 |
-28:21:17.3 |
HIP 92324 |
8.75 |
| 2026-04-09 00:00 |
18:48:37.44 |
-28:22:54.1 |
HIP 92324 |
5.01 |
| 2026-04-09 12:00 |
18:48:53.42 |
-28:24:31.6 |
HIP 92324 |
2.15 |
| 2026-04-10 00:00 |
18:49:09.11 |
-28:26:09.6 |
HIP 92324 |
3.73 |
| 2026-04-10 12:00 |
18:49:24.53 |
-28:27:48.3 |
HIP 92324 |
7.19 |
| 2026-04-11 00:00 |
18:49:39.66 |
-28:29:27.6 |
HIP 92324 |
10.82 |
| 2026-04-11 12:00 |
18:49:54.52 |
-28:31:07.4 |
HIP 92324 |
14.44 |
| 2026-04-12 00:00 |
18:50:09.09 |
-28:32:47.9 |
HIP 92324 |
18.04 |
| 2026-04-12 12:00 |
18:50:23.37 |
-28:34:29.1 |
HIP 92324 |
21.59 |
| 2026-04-13 00:00 |
18:50:37.37 |
-28:36:10.8 |
HIP 92324 |
25.09 |
| 2026-04-13 12:00 |
18:50:51.07 |
-28:37:53.2 |
HIP 92356 |
28.40 |
| 2026-04-14 00:00 |
18:51:04.49 |
-28:39:36.2 |
HIP 92580 |
29.68 |
| 2026-04-14 12:00 |
18:51:17.62 |
-28:41:19.9 |
HIP 92580 |
30.41 |
| 2026-04-15 00:00 |
18:51:30.45 |
-28:43:04.2 |
HIP 92580 |
31.50 |
| 2026-04-15 12:00 |
18:51:42.99 |
-28:44:49.2 |
HIP 92753 |
32.03 |
| 2026-04-16 00:00 |
18:51:55.23 |
-28:46:34.8 |
HIP 92753 |
29.98 |