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 |
1.000 |
| 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) |
| 2026-07-29 00:00 |
12:46:43.15 |
+04:51:48.3 |
HIP 62477 |
24.96 |
| 2026-07-29 12:00 |
12:47:04.07 |
+04:48:21.4 |
HIP 62477 |
22.29 |
| 2026-07-30 00:00 |
12:47:25.12 |
+04:44:54.1 |
HIP 62477 |
21.17 |
| 2026-07-30 12:00 |
12:47:46.28 |
+04:41:26.5 |
HIP 62477 |
21.87 |
| 2026-07-31 00:00 |
12:48:07.57 |
+04:37:58.5 |
HIP 62477 |
24.24 |
| 2026-07-31 12:00 |
12:48:28.99 |
+04:34:30.2 |
HIP 62477 |
27.90 |
| 2026-08-01 00:00 |
12:48:50.52 |
+04:31:01.5 |
HIP 62401 |
32.03 |
| 2026-08-01 12:00 |
12:49:12.17 |
+04:27:32.5 |
HIP 62401 |
34.05 |
| 2026-08-02 00:00 |
12:49:33.94 |
+04:24:03.1 |
HIP 62596 |
34.96 |
| 2026-08-02 12:00 |
12:49:55.83 |
+04:20:33.4 |
HIP 62596 |
31.90 |
| 2026-08-03 00:00 |
12:50:17.84 |
+04:17:03.4 |
HIP 62596 |
29.95 |
| 2026-08-03 12:00 |
12:50:39.96 |
+04:13:33.1 |
HIP 62596 |
29.36 |
| 2026-08-04 00:00 |
12:51:02.21 |
+04:10:02.4 |
HIP 62596 |
30.22 |
| 2026-08-04 12:00 |
12:51:24.56 |
+04:06:31.5 |
HIP 62704 |
31.31 |
| 2026-08-05 00:00 |
12:51:47.04 |
+04:03:00.2 |
HIP 62704 |
29.70 |
| 2026-08-05 12:00 |
12:52:09.62 |
+03:59:28.7 |
HIP 62917 |
26.99 |
| 2026-08-06 00:00 |
12:52:32.32 |
+03:55:56.8 |
HIP 62917 |
24.94 |
| 2026-08-06 12:00 |
12:52:55.13 |
+03:52:24.7 |
HIP 62917 |
24.57 |
| 2026-08-07 00:00 |
12:53:18.06 |
+03:48:52.2 |
HIP 62917 |
25.99 |
| 2026-08-07 12:00 |
12:53:41.10 |
+03:45:19.5 |
HIP 62917 |
28.95 |
| 2026-08-08 00:00 |
12:54:04.24 |
+03:41:46.5 |
HIP 63090 |
29.17 |
| 2026-08-08 12:00 |
12:54:27.50 |
+03:38:13.3 |
HIP 63090 |
22.42 |
| 2026-08-09 00:00 |
12:54:50.87 |
+03:34:39.8 |
HIP 63090 |
15.70 |
| 2026-08-09 12:00 |
12:55:14.34 |
+03:31:06.0 |
HIP 63090 |
9.11 |
| 2026-08-10 00:00 |
12:55:37.93 |
+03:27:32.0 |
HIP 63090 |
3.69 |
| 2026-08-10 12:00 |
12:56:01.62 |
+03:23:57.7 |
HIP 63090 |
6.27 |
| 2026-08-11 00:00 |
12:56:25.42 |
+03:20:23.2 |
HIP 63090 |
12.70 |
| 2026-08-11 12:00 |
12:56:49.32 |
+03:16:48.4 |
HIP 63090 |
19.50 |
| 2026-08-12 00:00 |
12:57:13.33 |
+03:13:13.4 |
HIP 63090 |
26.41 |
| 2026-08-12 12:00 |
12:57:37.44 |
+03:09:38.2 |
HIP 63090 |
33.37 |
| 2026-08-13 00:00 |
12:58:01.66 |
+03:06:02.8 |
HIP 63437 |
28.76 |
| 2026-08-13 12:00 |
12:58:25.98 |
+03:02:27.2 |
HIP 63437 |
22.66 |
| 2026-08-14 00:00 |
12:58:50.40 |
+02:58:51.3 |
HIP 63437 |
17.27 |
| 2026-08-14 12:00 |
12:59:14.92 |
+02:55:15.3 |
HIP 63437 |
13.53 |
| 2026-08-15 00:00 |
12:59:39.54 |
+02:51:39.1 |
HIP 63437 |
12.97 |
| 2026-08-15 12:00 |
13:00:04.26 |
+02:48:02.7 |
HIP 63437 |
15.98 |
| 2026-08-16 00:00 |
13:00:29.07 |
+02:44:26.1 |
HIP 63437 |
21.10 |
| 2026-08-16 12:00 |
13:00:53.99 |
+02:40:49.4 |
HIP 63455 |
21.07 |
| 2026-08-17 00:00 |
13:01:19.00 |
+02:37:12.5 |
HIP 63455 |
22.56 |
| 2026-08-17 12:00 |
13:01:44.11 |
+02:33:35.4 |
HIP 63455 |
26.06 |
| 2026-08-18 00:00 |
13:02:09.31 |
+02:29:58.2 |
HIP 63455 |
30.91 |
| 2026-08-18 12:00 |
13:02:34.60 |
+02:26:20.8 |
HIP 63455 |
36.59 |
| 2026-08-19 00:00 |
13:03:00.00 |
+02:22:43.3 |
HIP 63455 |
42.78 |