P/2013 N5 (PANSTARRS)
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) |
| 2026-02-03 00:00 |
13:48:53.16 |
-04:24:37.9 |
HIP 67366 |
19.16 |
| 2026-02-03 12:00 |
13:48:52.56 |
-04:24:01.6 |
HIP 67366 |
19.67 |
| 2026-02-04 00:00 |
13:48:51.86 |
-04:23:24.6 |
HIP 67366 |
20.20 |
| 2026-02-04 12:00 |
13:48:51.07 |
-04:22:47.2 |
HIP 67366 |
20.73 |
| 2026-02-05 00:00 |
13:48:50.18 |
-04:22:09.2 |
HIP 67366 |
21.27 |
| 2026-02-05 12:00 |
13:48:49.20 |
-04:21:30.6 |
HIP 67366 |
21.83 |
| 2026-02-06 00:00 |
13:48:48.12 |
-04:20:51.5 |
HIP 67366 |
22.39 |
| 2026-02-06 12:00 |
13:48:46.94 |
-04:20:11.8 |
HIP 67366 |
22.96 |
| 2026-02-07 00:00 |
13:48:45.67 |
-04:19:31.6 |
HIP 67366 |
23.55 |
| 2026-02-07 12:00 |
13:48:44.30 |
-04:18:50.9 |
HIP 67366 |
24.14 |
| 2026-02-08 00:00 |
13:48:42.84 |
-04:18:09.6 |
HIP 67366 |
24.76 |
| 2026-02-08 12:00 |
13:48:41.28 |
-04:17:27.7 |
HIP 67366 |
25.38 |
| 2026-02-09 00:00 |
13:48:39.62 |
-04:16:45.4 |
HIP 67366 |
26.03 |
| 2026-02-09 12:00 |
13:48:37.87 |
-04:16:02.5 |
HIP 67366 |
26.68 |
| 2026-02-10 00:00 |
13:48:36.02 |
-04:15:19.1 |
HIP 67366 |
27.36 |
| 2026-02-10 12:00 |
13:48:34.07 |
-04:14:35.1 |
HIP 67366 |
28.05 |
| 2026-02-11 00:00 |
13:48:32.03 |
-04:13:50.6 |
HIP 67366 |
28.76 |
| 2026-02-11 12:00 |
13:48:29.89 |
-04:13:05.6 |
HIP 67366 |
29.48 |
| 2026-02-12 00:00 |
13:48:27.66 |
-04:12:20.0 |
HIP 67366 |
30.23 |
| 2026-02-12 12:00 |
13:48:25.33 |
-04:11:34.0 |
HIP 67366 |
31.00 |
| 2026-02-13 00:00 |
13:48:22.91 |
-04:10:47.4 |
HIP 67366 |
31.78 |
| 2026-02-13 12:00 |
13:48:20.39 |
-04:10:00.3 |
HIP 67366 |
32.59 |
| 2026-02-14 00:00 |
13:48:17.77 |
-04:09:12.7 |
HIP 67366 |
33.42 |
| 2026-02-14 12:00 |
13:48:15.06 |
-04:08:24.5 |
HIP 67366 |
34.26 |
| 2026-02-15 00:00 |
13:48:12.26 |
-04:07:35.9 |
HIP 67387 |
35.01 |
| 2026-02-15 12:00 |
13:48:09.36 |
-04:06:46.8 |
HIP 67387 |
34.36 |
| 2026-02-16 00:00 |
13:48:06.36 |
-04:05:57.1 |
HIP 67387 |
33.73 |
| 2026-02-16 12:00 |
13:48:03.27 |
-04:05:07.0 |
HIP 67387 |
33.13 |
| 2026-02-17 00:00 |
13:48:00.09 |
-04:04:16.4 |
HIP 67387 |
32.55 |
| 2026-02-17 12:00 |
13:47:56.81 |
-04:03:25.3 |
HIP 67387 |
32.00 |
| 2026-02-18 00:00 |
13:47:53.44 |
-04:02:33.6 |
HIP 67387 |
31.49 |
| 2026-02-18 12:00 |
13:47:49.98 |
-04:01:41.6 |
HIP 67387 |
31.02 |
| 2026-02-19 00:00 |
13:47:46.42 |
-04:00:49.0 |
HIP 67387 |
30.60 |
| 2026-02-19 12:00 |
13:47:42.77 |
-03:59:55.9 |
HIP 67387 |
30.22 |
| 2026-02-20 00:00 |
13:47:39.03 |
-03:59:02.4 |
HIP 67387 |
29.90 |
| 2026-02-20 12:00 |
13:47:35.19 |
-03:58:08.4 |
HIP 67387 |
29.64 |
| 2026-02-21 00:00 |
13:47:31.27 |
-03:57:14.0 |
HIP 67387 |
29.44 |
| 2026-02-21 12:00 |
13:47:27.25 |
-03:56:19.1 |
HIP 67387 |
29.31 |
| 2026-02-22 00:00 |
13:47:23.14 |
-03:55:23.7 |
HIP 67387 |
29.25 |
| 2026-02-22 12:00 |
13:47:18.94 |
-03:54:27.9 |
HIP 67387 |
29.26 |
| 2026-02-23 00:00 |
13:47:14.65 |
-03:53:31.6 |
HIP 67387 |
29.36 |
| 2026-02-23 12:00 |
13:47:10.28 |
-03:52:34.9 |
HIP 67387 |
29.53 |
| 2026-02-24 00:00 |
13:47:05.81 |
-03:51:37.8 |
HIP 67387 |
29.79 |