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) |
| 2026-06-01 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 |
| 2026-06-02 12:00 |
13:20:37.76 |
-00:29:59.2 |
HIP 65261 |
28.17 |
| 2026-06-03 00:00 |
13:20:32.38 |
-00:29:32.6 |
HIP 65261 |
29.57 |
| 2026-06-03 12:00 |
13:20:27.08 |
-00:29:06.6 |
HIP 65261 |
30.95 |
| 2026-06-04 00:00 |
13:20:21.87 |
-00:28:41.2 |
HIP 64980 |
30.12 |
| 2026-06-04 12:00 |
13:20:16.73 |
-00:28:16.5 |
HIP 64980 |
28.99 |
| 2026-06-05 00:00 |
13:20:11.67 |
-00:27:52.3 |
HIP 64980 |
27.90 |
| 2026-06-05 12:00 |
13:20:06.70 |
-00:27:28.8 |
HIP 64980 |
26.84 |
| 2026-06-06 00:00 |
13:20:01.81 |
-00:27:05.9 |
HIP 64980 |
25.84 |
| 2026-06-06 12:00 |
13:19:57.01 |
-00:26:43.7 |
HIP 64980 |
24.87 |
| 2026-06-07 00:00 |
13:19:52.29 |
-00:26:22.0 |
HIP 64980 |
23.96 |
| 2026-06-07 12:00 |
13:19:47.65 |
-00:26:01.0 |
HIP 64980 |
23.09 |
| 2026-06-08 00:00 |
13:19:43.09 |
-00:25:40.6 |
HIP 64980 |
22.27 |
| 2026-06-08 12:00 |
13:19:38.63 |
-00:25:20.8 |
HIP 64980 |
21.51 |
| 2026-06-09 00:00 |
13:19:34.24 |
-00:25:01.7 |
HIP 64980 |
20.80 |
| 2026-06-09 12:00 |
13:19:29.95 |
-00:24:43.2 |
HIP 64980 |
20.15 |
| 2026-06-10 00:00 |
13:19:25.73 |
-00:24:25.3 |
HIP 64980 |
19.55 |
| 2026-06-10 12:00 |
13:19:21.61 |
-00:24:08.0 |
HIP 64980 |
19.01 |
| 2026-06-11 00:00 |
13:19:17.57 |
-00:23:51.4 |
HIP 64980 |
18.54 |
| 2026-06-11 12:00 |
13:19:13.62 |
-00:23:35.3 |
HIP 64980 |
18.13 |
| 2026-06-12 00:00 |
13:19:09.76 |
-00:23:20.0 |
HIP 64980 |
17.77 |
| 2026-06-12 12:00 |
13:19:05.98 |
-00:23:05.2 |
HIP 64980 |
17.48 |
| 2026-06-13 00:00 |
13:19:02.29 |
-00:22:51.1 |
HIP 64980 |
17.25 |
| 2026-06-13 12:00 |
13:18:58.70 |
-00:22:37.6 |
HIP 64980 |
17.08 |
| 2026-06-14 00:00 |
13:18:55.19 |
-00:22:24.7 |
HIP 64980 |
16.96 |
| 2026-06-14 12:00 |
13:18:51.77 |
-00:22:12.5 |
HIP 64980 |
16.90 |
| 2026-06-15 00:00 |
13:18:48.44 |
-00:22:00.9 |
HIP 64980 |
16.89 |
| 2026-06-15 12:00 |
13:18:45.19 |
-00:21:49.9 |
HIP 64980 |
16.92 |
| 2026-06-16 00:00 |
13:18:42.04 |
-00:21:39.6 |
HIP 64980 |
17.00 |
| 2026-06-16 12:00 |
13:18:38.98 |
-00:21:29.9 |
HIP 64980 |
17.11 |
| 2026-06-17 00:00 |
13:18:36.01 |
-00:21:20.8 |
HIP 64980 |
17.27 |
| 2026-06-17 12:00 |
13:18:33.13 |
-00:21:12.3 |
HIP 64980 |
17.45 |
| 2026-06-18 00:00 |
13:18:30.34 |
-00:21:04.5 |
HIP 64980 |
17.66 |
| 2026-06-18 12:00 |
13:18:27.65 |
-00:20:57.2 |
HIP 64980 |
17.89 |
| 2026-06-19 00:00 |
13:18:25.04 |
-00:20:50.6 |
HIP 64980 |
18.14 |
| 2026-06-19 12:00 |
13:18:22.52 |
-00:20:44.7 |
HIP 64980 |
18.41 |
| 2026-06-20 00:00 |
13:18:20.10 |
-00:20:39.3 |
HIP 64980 |
18.69 |
| 2026-06-20 12:00 |
13:18:17.77 |
-00:20:34.6 |
HIP 64980 |
18.98 |
| 2026-06-21 00:00 |
13:18:15.53 |
-00:20:30.5 |
HIP 64980 |
19.27 |
| 2026-06-21 12:00 |
13:18:13.38 |
-00:20:27.0 |
HIP 64980 |
19.57 |
| 2026-06-22 00:00 |
13:18:11.32 |
-00:20:24.1 |
HIP 64980 |
19.88 |