メタデータ
| 項目 |
値 |
| Designation |
348P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-06-23T02:38:18.427200Z |
| Orbit solution date (soln_date, UTC) |
2022-03-08T19:44:06Z |
| Obs used |
84 |
| NEO |
- |
| M1 |
17.600 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2018-03-29.0000000 |
| e |
0.30165714 |
| q (au) |
2.213010 |
| a (au) |
3.168945 |
| i (deg) |
17.566297 |
| Ω (om, deg) |
313.555846 |
| ω (w, deg) |
134.165093 |
| M (ma, deg) |
112.497751 |
等級
散乱 + 全体線形
$$
M_a = (14.638 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.638 |
| n |
6.000 |
| gf |
0.832 |
| gb |
-0.862 |
| k |
0.980 |
| δ90 |
1.000 |
| 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) |
| 2026-06-01 00:00 |
23:05:25.12 |
-00:01:12.4 |
HIP 114098 |
19.90 |
| 2026-06-01 12:00 |
23:05:43.25 |
+00:02:53.2 |
HIP 114098 |
19.15 |
| 2026-06-02 00:00 |
23:06:01.20 |
+00:06:58.4 |
HIP 114098 |
20.31 |
| 2026-06-02 12:00 |
23:06:18.98 |
+00:11:03.3 |
HIP 114098 |
23.07 |
| 2026-06-03 00:00 |
23:06:36.59 |
+00:15:07.7 |
HIP 114098 |
26.91 |
| 2026-06-03 12:00 |
23:06:54.01 |
+00:19:11.8 |
HIP 114098 |
31.42 |
| 2026-06-04 00:00 |
23:07:11.26 |
+00:23:15.4 |
HIP 114098 |
36.33 |
| 2026-06-04 12:00 |
23:07:28.32 |
+00:27:18.6 |
HIP 114098 |
41.48 |
| 2026-06-05 00:00 |
23:07:45.20 |
+00:31:21.5 |
HIP 114098 |
46.79 |
| 2026-06-05 12:00 |
23:08:01.90 |
+00:35:23.8 |
HIP 114458 |
43.54 |
| 2026-06-06 00:00 |
23:08:18.41 |
+00:39:25.8 |
HIP 114458 |
40.84 |
| 2026-06-06 12:00 |
23:08:34.73 |
+00:43:27.3 |
HIP 114458 |
38.85 |
| 2026-06-07 00:00 |
23:08:50.86 |
+00:47:28.4 |
HIP 114458 |
37.67 |
| 2026-06-07 12:00 |
23:09:06.81 |
+00:51:29.0 |
HIP 114458 |
37.35 |
| 2026-06-08 00:00 |
23:09:22.56 |
+00:55:29.2 |
HIP 114458 |
37.91 |
| 2026-06-08 12:00 |
23:09:38.12 |
+00:59:28.8 |
HIP 114458 |
39.29 |
| 2026-06-09 00:00 |
23:09:53.49 |
+01:03:28.0 |
HIP 114458 |
41.39 |
| 2026-06-09 12:00 |
23:10:08.65 |
+01:07:26.7 |
HIP 114458 |
44.09 |
| 2026-06-10 00:00 |
23:10:23.62 |
+01:11:24.9 |
HIP 114354 |
45.80 |
| 2026-06-10 12:00 |
23:10:38.39 |
+01:15:22.6 |
HIP 114354 |
43.21 |
| 2026-06-11 00:00 |
23:10:52.96 |
+01:19:19.8 |
HIP 114354 |
41.15 |
| 2026-06-11 12:00 |
23:11:07.33 |
+01:23:16.4 |
HIP 114354 |
39.70 |
| 2026-06-12 00:00 |
23:11:21.49 |
+01:27:12.5 |
HIP 114558 |
36.33 |
| 2026-06-12 12:00 |
23:11:35.44 |
+01:31:08.1 |
HIP 114558 |
31.39 |
| 2026-06-13 00:00 |
23:11:49.18 |
+01:35:03.1 |
HIP 114558 |
26.59 |
| 2026-06-13 12:00 |
23:12:02.72 |
+01:38:57.5 |
HIP 114558 |
22.00 |
| 2026-06-14 00:00 |
23:12:16.04 |
+01:42:51.4 |
HIP 114558 |
17.74 |
| 2026-06-14 12:00 |
23:12:29.16 |
+01:46:44.7 |
HIP 114558 |
14.06 |
| 2026-06-15 00:00 |
23:12:42.05 |
+01:50:37.3 |
HIP 114558 |
11.50 |
| 2026-06-15 12:00 |
23:12:54.73 |
+01:54:29.4 |
HIP 114558 |
10.80 |
| 2026-06-16 00:00 |
23:13:07.20 |
+01:58:20.9 |
HIP 114558 |
12.24 |
| 2026-06-16 12:00 |
23:13:19.44 |
+02:02:11.7 |
HIP 114665 |
11.37 |
| 2026-06-17 00:00 |
23:13:31.46 |
+02:06:01.9 |
HIP 114665 |
6.62 |
| 2026-06-17 12:00 |
23:13:43.26 |
+02:09:51.5 |
HIP 114665 |
2.42 |
| 2026-06-18 00:00 |
23:13:54.84 |
+02:13:40.5 |
HIP 114665 |
3.75 |
| 2026-06-18 12:00 |
23:14:06.20 |
+02:17:28.7 |
HIP 114665 |
8.20 |
| 2026-06-19 00:00 |
23:14:17.32 |
+02:21:16.4 |
HIP 114665 |
12.82 |
| 2026-06-19 12:00 |
23:14:28.22 |
+02:25:03.3 |
HIP 114665 |
17.43 |
| 2026-06-20 00:00 |
23:14:38.89 |
+02:28:49.6 |
HIP 114665 |
22.02 |
| 2026-06-20 12:00 |
23:14:49.34 |
+02:32:35.2 |
HIP 114639 |
22.79 |
| 2026-06-21 00:00 |
23:14:59.55 |
+02:36:20.1 |
HIP 114639 |
24.28 |
| 2026-06-21 12:00 |
23:15:09.52 |
+02:40:04.3 |
HIP 114849 |
21.71 |
| 2026-06-22 00:00 |
23:15:19.27 |
+02:43:47.8 |
HIP 114849 |
17.30 |