348P/PANSTARRS
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
$$
M_a = (14.635 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.635 |
| n |
6.000 |
| gf |
0.962 |
| 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) |
| 2026-02-03 00:00 |
21:06:24.95 |
-16:11:44.3 |
HIP 104252 |
18.22 |
| 2026-02-03 12:00 |
21:07:01.04 |
-16:08:10.4 |
HIP 104252 |
17.52 |
| 2026-02-04 00:00 |
21:07:37.13 |
-16:04:36.0 |
HIP 104252 |
21.40 |
| 2026-02-04 12:00 |
21:08:13.21 |
-16:01:01.1 |
HIP 104420 |
16.19 |
| 2026-02-05 00:00 |
21:08:49.28 |
-15:57:25.7 |
HIP 104420 |
13.19 |
| 2026-02-05 12:00 |
21:09:25.35 |
-15:53:49.8 |
HIP 104505 |
15.51 |
| 2026-02-06 00:00 |
21:10:01.41 |
-15:50:13.5 |
HIP 104505 |
8.17 |
| 2026-02-06 12:00 |
21:10:37.46 |
-15:46:36.6 |
HIP 104505 |
8.33 |
| 2026-02-07 00:00 |
21:11:13.51 |
-15:42:59.2 |
HIP 104505 |
15.77 |
| 2026-02-07 12:00 |
21:11:49.54 |
-15:39:21.3 |
HIP 104713 |
17.01 |
| 2026-02-08 00:00 |
21:12:25.57 |
-15:35:43.0 |
HIP 104713 |
15.66 |
| 2026-02-08 12:00 |
21:13:01.58 |
-15:32:04.2 |
HIP 104713 |
19.45 |
| 2026-02-09 00:00 |
21:13:37.59 |
-15:28:24.8 |
HIP 104713 |
26.24 |
| 2026-02-09 12:00 |
21:14:13.59 |
-15:24:45.0 |
HIP 104918 |
21.95 |
| 2026-02-10 00:00 |
21:14:49.57 |
-15:21:04.7 |
HIP 104918 |
14.42 |
| 2026-02-10 12:00 |
21:15:25.54 |
-15:17:24.0 |
HIP 104974 |
8.50 |
| 2026-02-11 00:00 |
21:16:01.50 |
-15:13:42.7 |
HIP 104974 |
5.28 |
| 2026-02-11 12:00 |
21:16:37.45 |
-15:10:01.0 |
HIP 104974 |
12.70 |
| 2026-02-12 00:00 |
21:17:13.38 |
-15:06:18.8 |
HIP 105042 |
19.19 |
| 2026-02-12 12:00 |
21:17:49.30 |
-15:02:36.1 |
HIP 105042 |
22.11 |
| 2026-02-13 00:00 |
21:18:25.20 |
-14:58:53.0 |
HIP 105285 |
18.15 |
| 2026-02-13 12:00 |
21:19:01.08 |
-14:55:09.4 |
HIP 105285 |
14.07 |
| 2026-02-14 00:00 |
21:19:36.95 |
-14:51:25.3 |
HIP 105285 |
15.63 |
| 2026-02-14 12:00 |
21:20:12.81 |
-14:47:40.8 |
HIP 105285 |
21.66 |
| 2026-02-15 00:00 |
21:20:48.64 |
-14:43:55.8 |
HIP 105519 |
24.02 |
| 2026-02-15 12:00 |
21:21:24.46 |
-14:40:10.4 |
HIP 105519 |
19.57 |
| 2026-02-16 00:00 |
21:22:00.26 |
-14:36:24.5 |
HIP 105519 |
19.17 |
| 2026-02-16 12:00 |
21:22:36.03 |
-14:32:38.1 |
HIP 105519 |
23.03 |
| 2026-02-17 00:00 |
21:23:11.79 |
-14:28:51.3 |
HIP 105519 |
29.52 |
| 2026-02-17 12:00 |
21:23:47.53 |
-14:25:04.1 |
HIP 105782 |
25.05 |
| 2026-02-18 00:00 |
21:24:23.24 |
-14:21:16.5 |
HIP 105782 |
15.64 |
| 2026-02-18 12:00 |
21:24:58.94 |
-14:17:28.4 |
HIP 105782 |
6.35 |
| 2026-02-19 00:00 |
21:25:34.61 |
-14:13:39.8 |
HIP 105782 |
3.79 |
| 2026-02-19 12:00 |
21:26:10.25 |
-14:09:50.9 |
HIP 105782 |
12.92 |
| 2026-02-20 00:00 |
21:26:45.87 |
-14:06:01.5 |
HIP 105782 |
22.31 |
| 2026-02-20 12:00 |
21:27:21.47 |
-14:02:11.6 |
HIP 105946 |
26.94 |
| 2026-02-21 00:00 |
21:27:57.04 |
-13:58:21.4 |
HIP 106068 |
19.37 |
| 2026-02-21 12:00 |
21:28:32.59 |
-13:54:30.8 |
HIP 106068 |
10.14 |
| 2026-02-22 00:00 |
21:29:08.10 |
-13:50:39.7 |
HIP 106068 |
2.96 |
| 2026-02-22 12:00 |
21:29:43.59 |
-13:46:48.2 |
HIP 106068 |
9.64 |
| 2026-02-23 00:00 |
21:30:19.06 |
-13:42:56.3 |
HIP 106068 |
18.85 |
| 2026-02-23 12:00 |
21:30:54.49 |
-13:39:04.0 |
HIP 106068 |
28.21 |
| 2026-02-24 00:00 |
21:31:29.90 |
-13:35:11.4 |
HIP 106380 |
20.27 |