メタデータ
| 項目 |
値 |
| Designation |
P/2013 N5 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-07-02T10:34:14.370240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:37Z |
| Obs used |
28 |
| NEO |
- |
| M1 |
18.100 |
| 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) |
2013-08-12.0000000 |
| e |
0.73191499 |
| q (au) |
1.823049 |
| a (au) |
6.800265 |
| i (deg) |
23.242478 |
| Ω (om, deg) |
187.746026 |
| ω (w, deg) |
176.242550 |
| M (ma, deg) |
2.254283 |
等級
散乱 + 全体線形
$$
M_a = (19.487 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
19.487 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| 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) |
| 2026-05-12 00:00 |
13:25:38.24 |
-00:58:24.7 |
HIP 65545 |
15.54 |
| 2026-05-12 12:00 |
13:25:29.91 |
-00:57:33.3 |
HIP 65545 |
17.43 |
| 2026-05-13 00:00 |
13:25:21.64 |
-00:56:42.4 |
HIP 65545 |
19.38 |
| 2026-05-13 12:00 |
13:25:13.42 |
-00:55:52.0 |
HIP 65545 |
21.37 |
| 2026-05-14 00:00 |
13:25:05.25 |
-00:55:02.1 |
HIP 65545 |
23.38 |
| 2026-05-14 12:00 |
13:24:57.14 |
-00:54:12.7 |
HIP 65360 |
21.54 |
| 2026-05-15 00:00 |
13:24:49.09 |
-00:53:23.9 |
HIP 65360 |
19.40 |
| 2026-05-15 12:00 |
13:24:41.09 |
-00:52:35.6 |
HIP 65360 |
17.28 |
| 2026-05-16 00:00 |
13:24:33.15 |
-00:51:47.9 |
HIP 65360 |
15.19 |
| 2026-05-16 12:00 |
13:24:25.27 |
-00:51:00.6 |
HIP 65360 |
13.13 |
| 2026-05-17 00:00 |
13:24:17.45 |
-00:50:14.0 |
HIP 65360 |
11.12 |
| 2026-05-17 12:00 |
13:24:09.70 |
-00:49:27.9 |
HIP 65360 |
9.15 |
| 2026-05-18 00:00 |
13:24:02.00 |
-00:48:42.3 |
HIP 65360 |
7.28 |
| 2026-05-18 12:00 |
13:23:54.37 |
-00:47:57.3 |
HIP 65360 |
5.56 |
| 2026-05-19 00:00 |
13:23:46.80 |
-00:47:12.9 |
HIP 65360 |
4.17 |
| 2026-05-19 12:00 |
13:23:39.29 |
-00:46:29.1 |
HIP 65360 |
3.48 |
| 2026-05-20 00:00 |
13:23:31.85 |
-00:45:45.8 |
HIP 65360 |
3.86 |
| 2026-05-20 12:00 |
13:23:24.47 |
-00:45:03.0 |
HIP 65360 |
5.05 |
| 2026-05-21 00:00 |
13:23:17.16 |
-00:44:20.9 |
HIP 65360 |
6.62 |
| 2026-05-21 12:00 |
13:23:09.92 |
-00:43:39.3 |
HIP 65360 |
8.33 |
| 2026-05-22 00:00 |
13:23:02.75 |
-00:42:58.3 |
HIP 65360 |
10.11 |
| 2026-05-22 12:00 |
13:22:55.64 |
-00:42:17.9 |
HIP 65261 |
10.11 |
| 2026-05-23 00:00 |
13:22:48.60 |
-00:41:38.1 |
HIP 65261 |
8.49 |
| 2026-05-23 12:00 |
13:22:41.63 |
-00:40:58.8 |
HIP 65261 |
7.02 |
| 2026-05-24 00:00 |
13:22:34.74 |
-00:40:20.1 |
HIP 65261 |
5.80 |
| 2026-05-24 12:00 |
13:22:27.91 |
-00:39:42.1 |
HIP 65261 |
4.98 |
| 2026-05-25 00:00 |
13:22:21.16 |
-00:39:04.6 |
HIP 65261 |
4.75 |
| 2026-05-25 12:00 |
13:22:14.47 |
-00:38:27.7 |
HIP 65261 |
5.18 |
| 2026-05-26 00:00 |
13:22:07.86 |
-00:37:51.4 |
HIP 65261 |
6.10 |
| 2026-05-26 12:00 |
13:22:01.32 |
-00:37:15.7 |
HIP 65261 |
7.33 |
| 2026-05-27 00:00 |
13:21:54.86 |
-00:36:40.6 |
HIP 65261 |
8.71 |
| 2026-05-27 12:00 |
13:21:48.47 |
-00:36:06.1 |
HIP 65261 |
10.18 |
| 2026-05-28 00:00 |
13:21:42.16 |
-00:35:32.2 |
HIP 65261 |
11.70 |
| 2026-05-28 12:00 |
13:21:35.92 |
-00:34:58.9 |
HIP 65261 |
13.23 |
| 2026-05-29 00:00 |
13:21:29.75 |
-00:34:26.2 |
HIP 65261 |
14.77 |
| 2026-05-29 12:00 |
13:21:23.66 |
-00:33:54.1 |
HIP 65261 |
16.31 |
| 2026-05-30 00:00 |
13:21:17.65 |
-00:33:22.6 |
HIP 65261 |
17.84 |
| 2026-05-30 12:00 |
13:21:11.72 |
-00:32:51.7 |
HIP 65261 |
19.37 |
| 2026-05-31 00:00 |
13:21:05.86 |
-00:32:21.4 |
HIP 65261 |
20.88 |
| 2026-05-31 12:00 |
13:21:00.09 |
-00:31:51.7 |
HIP 65261 |
22.37 |
| 2026-06-01 00:00 |
13:20:54.39 |
-00:31:22.7 |
HIP 65261 |
23.85 |
| 2026-06-01 12:00 |
13:20:48.77 |
-00:30:54.2 |
HIP 65261 |
25.31 |
| 2026-06-02 00:00 |
13:20:43.23 |
-00:30:26.4 |
HIP 65261 |
26.75 |