メタデータ
| 項目 |
値 |
| Designation |
358P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-11-11T04:28:15.360960Z |
| Orbit solution date (soln_date, UTC) |
2024-03-05T09:31:37Z |
| Obs used |
252 |
| NEO |
- |
| M1 |
7.800 |
| K1 |
30.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2022-08-02.0000000 |
| e |
0.23889221 |
| q (au) |
2.394903 |
| a (au) |
3.146602 |
| i (deg) |
11.060250 |
| Ω (om, deg) |
85.702465 |
| ω (w, deg) |
299.772862 |
| M (ma, deg) |
277.680859 |
等級
散乱 + 全体線形
$$
M_a = (13.358 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.358 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-1.000 |
| 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 |
12:57:10.33 |
+09:40:25.2 |
HIP 63295 |
17.43 |
| 2026-03-26 12:00 |
12:56:49.15 |
+09:42:40.1 |
HIP 63295 |
22.09 |
| 2026-03-27 00:00 |
12:56:27.91 |
+09:44:53.8 |
HIP 63030 |
25.32 |
| 2026-03-27 12:00 |
12:56:06.61 |
+09:47:06.3 |
HIP 63030 |
19.66 |
| 2026-03-28 00:00 |
12:55:45.25 |
+09:49:17.6 |
HIP 63030 |
14.04 |
| 2026-03-28 12:00 |
12:55:23.85 |
+09:51:27.7 |
HIP 63030 |
8.51 |
| 2026-03-29 00:00 |
12:55:02.39 |
+09:53:36.5 |
HIP 63030 |
3.59 |
| 2026-03-29 12:00 |
12:54:40.90 |
+09:55:44.1 |
HIP 63030 |
4.31 |
| 2026-03-30 00:00 |
12:54:19.37 |
+09:57:50.4 |
HIP 63030 |
9.46 |
| 2026-03-30 12:00 |
12:53:57.81 |
+09:59:55.3 |
HIP 63030 |
15.02 |
| 2026-03-31 00:00 |
12:53:36.22 |
+10:01:58.9 |
HIP 63030 |
20.65 |
| 2026-03-31 12:00 |
12:53:14.60 |
+10:04:01.1 |
HIP 63030 |
26.32 |
| 2026-04-01 00:00 |
12:52:52.97 |
+10:06:01.9 |
HIP 62707 |
27.78 |
| 2026-04-01 12:00 |
12:52:31.31 |
+10:08:01.3 |
HIP 62707 |
22.62 |
| 2026-04-02 00:00 |
12:52:09.65 |
+10:09:59.3 |
HIP 62707 |
17.79 |
| 2026-04-02 12:00 |
12:51:47.98 |
+10:11:55.7 |
HIP 62707 |
13.60 |
| 2026-04-03 00:00 |
12:51:26.31 |
+10:13:50.7 |
HIP 62707 |
10.85 |
| 2026-04-03 12:00 |
12:51:04.64 |
+10:15:44.1 |
HIP 62707 |
10.68 |
| 2026-04-04 00:00 |
12:50:42.98 |
+10:17:36.0 |
HIP 62707 |
13.19 |
| 2026-04-04 12:00 |
12:50:21.33 |
+10:19:26.3 |
HIP 62707 |
17.22 |
| 2026-04-05 00:00 |
12:49:59.69 |
+10:21:15.0 |
HIP 62707 |
21.95 |
| 2026-04-05 12:00 |
12:49:38.07 |
+10:23:02.1 |
HIP 62707 |
27.00 |
| 2026-04-06 00:00 |
12:49:16.48 |
+10:24:47.6 |
HIP 62449 |
26.43 |
| 2026-04-06 12:00 |
12:48:54.91 |
+10:26:31.5 |
HIP 62449 |
24.01 |
| 2026-04-07 00:00 |
12:48:33.38 |
+10:28:13.6 |
HIP 62449 |
22.71 |
| 2026-04-07 12:00 |
12:48:11.88 |
+10:29:54.1 |
HIP 62449 |
22.71 |
| 2026-04-08 00:00 |
12:47:50.42 |
+10:31:32.8 |
HIP 62449 |
24.00 |
| 2026-04-08 12:00 |
12:47:29.01 |
+10:33:09.8 |
HIP 62306 |
21.54 |
| 2026-04-09 00:00 |
12:47:07.65 |
+10:34:45.0 |
HIP 62306 |
16.30 |
| 2026-04-09 12:00 |
12:46:46.34 |
+10:36:18.5 |
HIP 62306 |
11.29 |
| 2026-04-10 00:00 |
12:46:25.09 |
+10:37:50.2 |
HIP 62306 |
7.00 |
| 2026-04-10 12:00 |
12:46:03.90 |
+10:39:20.0 |
HIP 62306 |
5.43 |
| 2026-04-11 00:00 |
12:45:42.78 |
+10:40:48.0 |
HIP 62306 |
8.25 |
| 2026-04-11 12:00 |
12:45:21.73 |
+10:42:14.2 |
HIP 62306 |
12.80 |
| 2026-04-12 00:00 |
12:45:00.75 |
+10:43:38.5 |
HIP 62306 |
17.79 |
| 2026-04-12 12:00 |
12:44:39.85 |
+10:45:01.0 |
HIP 62133 |
13.95 |
| 2026-04-13 00:00 |
12:44:19.04 |
+10:46:21.5 |
HIP 62133 |
9.92 |
| 2026-04-13 12:00 |
12:43:58.31 |
+10:47:40.1 |
HIP 62133 |
7.65 |
| 2026-04-14 00:00 |
12:43:37.68 |
+10:48:56.8 |
HIP 62133 |
8.60 |
| 2026-04-14 12:00 |
12:43:17.14 |
+10:50:11.5 |
HIP 62133 |
11.99 |
| 2026-04-15 00:00 |
12:42:56.70 |
+10:51:24.3 |
HIP 62133 |
16.34 |
| 2026-04-15 12:00 |
12:42:36.37 |
+10:52:35.1 |
HIP 62133 |
21.04 |
| 2026-04-16 00:00 |
12:42:16.14 |
+10:53:44.0 |
HIP 61856 |
23.93 |