C/2014 N2 (PANSTARRS)
メタデータ
| 項目 |
値 |
| Designation |
C/2014 N2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-10-08T05:29:04.395840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:57Z |
| Obs used |
50 |
| NEO |
- |
| M1 |
12.000 |
| K1 |
15.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2014-08-04.0000000 |
| e |
0.99954235 |
| q (au) |
2.184402 |
| a (au) |
4773.044196 |
| i (deg) |
133.013197 |
| Ω (om, deg) |
143.804180 |
| ω (w, deg) |
237.860749 |
| M (ma, deg) |
359.999805 |
等級
散乱 + 全体線形
$$
M_a = (19.001 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
19.001 |
| 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 |
08:57:01.45 |
+36:25:07.5 |
HIP 43861 |
10.99 |
| 2026-02-03 12:00 |
08:56:55.60 |
+36:25:29.9 |
HIP 43861 |
9.79 |
| 2026-02-04 00:00 |
08:56:49.75 |
+36:25:52.1 |
HIP 43861 |
8.59 |
| 2026-02-04 12:00 |
08:56:43.90 |
+36:26:14.1 |
HIP 43861 |
7.41 |
| 2026-02-05 00:00 |
08:56:38.06 |
+36:26:35.9 |
HIP 43861 |
6.25 |
| 2026-02-05 12:00 |
08:56:32.22 |
+36:26:57.4 |
HIP 43861 |
5.12 |
| 2026-02-06 00:00 |
08:56:26.39 |
+36:27:18.7 |
HIP 43861 |
4.05 |
| 2026-02-06 12:00 |
08:56:20.56 |
+36:27:39.8 |
HIP 43861 |
3.09 |
| 2026-02-07 00:00 |
08:56:14.74 |
+36:28:00.6 |
HIP 43861 |
2.39 |
| 2026-02-07 12:00 |
08:56:08.92 |
+36:28:21.1 |
HIP 43861 |
2.20 |
| 2026-02-08 00:00 |
08:56:03.11 |
+36:28:41.5 |
HIP 43861 |
2.63 |
| 2026-02-08 12:00 |
08:55:57.30 |
+36:29:01.5 |
HIP 43861 |
3.45 |
| 2026-02-09 00:00 |
08:55:51.51 |
+36:29:21.4 |
HIP 43861 |
4.45 |
| 2026-02-09 12:00 |
08:55:45.72 |
+36:29:41.0 |
HIP 43861 |
5.54 |
| 2026-02-10 00:00 |
08:55:39.94 |
+36:30:00.3 |
HIP 43861 |
6.66 |
| 2026-02-10 12:00 |
08:55:34.17 |
+36:30:19.4 |
HIP 43861 |
7.80 |
| 2026-02-11 00:00 |
08:55:28.41 |
+36:30:38.2 |
HIP 43861 |
8.96 |
| 2026-02-11 12:00 |
08:55:22.66 |
+36:30:56.8 |
HIP 43861 |
10.12 |
| 2026-02-12 00:00 |
08:55:16.92 |
+36:31:15.1 |
HIP 43861 |
11.28 |
| 2026-02-12 12:00 |
08:55:11.19 |
+36:31:33.2 |
HIP 43861 |
12.45 |
| 2026-02-13 00:00 |
08:55:05.47 |
+36:31:51.1 |
HIP 43861 |
13.62 |
| 2026-02-13 12:00 |
08:54:59.76 |
+36:32:08.6 |
HIP 43861 |
14.78 |
| 2026-02-14 00:00 |
08:54:54.07 |
+36:32:26.0 |
HIP 43757 |
14.56 |
| 2026-02-14 12:00 |
08:54:48.39 |
+36:32:43.0 |
HIP 43757 |
14.23 |
| 2026-02-15 00:00 |
08:54:42.72 |
+36:32:59.8 |
HIP 43757 |
14.00 |
| 2026-02-15 12:00 |
08:54:37.07 |
+36:33:16.4 |
HIP 43757 |
13.86 |
| 2026-02-16 00:00 |
08:54:31.43 |
+36:33:32.6 |
HIP 43757 |
13.82 |
| 2026-02-16 12:00 |
08:54:25.81 |
+36:33:48.7 |
HIP 43757 |
13.89 |
| 2026-02-17 00:00 |
08:54:20.20 |
+36:34:04.4 |
HIP 43757 |
14.05 |
| 2026-02-17 12:00 |
08:54:14.60 |
+36:34:19.9 |
HIP 43757 |
14.31 |
| 2026-02-18 00:00 |
08:54:09.03 |
+36:34:35.2 |
HIP 43757 |
14.66 |
| 2026-02-18 12:00 |
08:54:03.47 |
+36:34:50.1 |
HIP 43757 |
15.08 |
| 2026-02-19 00:00 |
08:53:57.93 |
+36:35:04.9 |
HIP 43757 |
15.58 |
| 2026-02-19 12:00 |
08:53:52.40 |
+36:35:19.3 |
HIP 43757 |
16.15 |
| 2026-02-20 00:00 |
08:53:46.90 |
+36:35:33.5 |
HIP 43757 |
16.77 |
| 2026-02-20 12:00 |
08:53:41.41 |
+36:35:47.4 |
HIP 43757 |
17.45 |
| 2026-02-21 00:00 |
08:53:35.94 |
+36:36:01.0 |
HIP 43757 |
18.16 |
| 2026-02-21 12:00 |
08:53:30.49 |
+36:36:14.4 |
HIP 43757 |
18.92 |
| 2026-02-22 00:00 |
08:53:25.07 |
+36:36:27.5 |
HIP 43757 |
19.71 |
| 2026-02-22 12:00 |
08:53:19.66 |
+36:36:40.4 |
HIP 43757 |
20.53 |
| 2026-02-23 00:00 |
08:53:14.27 |
+36:36:53.0 |
HIP 43757 |
21.37 |
| 2026-02-23 12:00 |
08:53:08.91 |
+36:37:05.3 |
HIP 43757 |
22.23 |
| 2026-02-24 00:00 |
08:53:03.57 |
+36:37:17.3 |
HIP 43757 |
23.11 |