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) |
| 2026-06-01 00:00 |
08:47:42.24 |
+36:08:25.0 |
HIP 43155 |
19.34 |
| 2026-06-01 12:00 |
08:47:44.64 |
+36:08:03.9 |
HIP 43155 |
19.78 |
| 2026-06-02 00:00 |
08:47:47.08 |
+36:07:42.8 |
HIP 43155 |
20.24 |
| 2026-06-02 12:00 |
08:47:49.56 |
+36:07:21.7 |
HIP 43155 |
20.70 |
| 2026-06-03 00:00 |
08:47:52.07 |
+36:07:00.6 |
HIP 43155 |
21.17 |
| 2026-06-03 12:00 |
08:47:54.61 |
+36:06:39.5 |
HIP 43155 |
21.65 |
| 2026-06-04 00:00 |
08:47:57.19 |
+36:06:18.3 |
HIP 43155 |
22.14 |
| 2026-06-04 12:00 |
08:47:59.80 |
+36:05:57.2 |
HIP 43155 |
22.64 |
| 2026-06-05 00:00 |
08:48:02.45 |
+36:05:36.0 |
HIP 43155 |
23.15 |
| 2026-06-05 12:00 |
08:48:05.13 |
+36:05:14.8 |
HIP 43155 |
23.67 |
| 2026-06-06 00:00 |
08:48:07.84 |
+36:04:53.6 |
HIP 43155 |
24.20 |
| 2026-06-06 12:00 |
08:48:10.58 |
+36:04:32.4 |
HIP 43155 |
24.73 |
| 2026-06-07 00:00 |
08:48:13.36 |
+36:04:11.2 |
HIP 43155 |
25.28 |
| 2026-06-07 12:00 |
08:48:16.17 |
+36:03:50.1 |
HIP 43155 |
25.83 |
| 2026-06-08 00:00 |
08:48:19.01 |
+36:03:28.9 |
HIP 43155 |
26.39 |
| 2026-06-08 12:00 |
08:48:21.89 |
+36:03:07.7 |
HIP 43155 |
26.96 |
| 2026-06-09 00:00 |
08:48:24.79 |
+36:02:46.5 |
HIP 43155 |
27.53 |
| 2026-06-09 12:00 |
08:48:27.73 |
+36:02:25.3 |
HIP 43155 |
28.12 |
| 2026-06-10 00:00 |
08:48:30.70 |
+36:02:04.1 |
HIP 43155 |
28.71 |
| 2026-06-10 12:00 |
08:48:33.70 |
+36:01:42.9 |
HIP 43155 |
29.31 |
| 2026-06-11 00:00 |
08:48:36.73 |
+36:01:21.7 |
HIP 43155 |
29.92 |
| 2026-06-11 12:00 |
08:48:39.79 |
+36:01:00.6 |
HIP 43419 |
30.01 |
| 2026-06-12 00:00 |
08:48:42.88 |
+36:00:39.4 |
HIP 43419 |
29.30 |
| 2026-06-12 12:00 |
08:48:46.01 |
+36:00:18.3 |
HIP 43419 |
28.59 |
| 2026-06-13 00:00 |
08:48:49.16 |
+35:59:57.2 |
HIP 43419 |
27.87 |
| 2026-06-13 12:00 |
08:48:52.34 |
+35:59:36.1 |
HIP 43419 |
27.14 |
| 2026-06-14 00:00 |
08:48:55.55 |
+35:59:15.0 |
HIP 43419 |
26.42 |
| 2026-06-14 12:00 |
08:48:58.79 |
+35:58:53.9 |
HIP 43419 |
25.68 |
| 2026-06-15 00:00 |
08:49:02.06 |
+35:58:32.9 |
HIP 43419 |
24.95 |
| 2026-06-15 12:00 |
08:49:05.36 |
+35:58:11.9 |
HIP 43419 |
24.21 |
| 2026-06-16 00:00 |
08:49:08.68 |
+35:57:50.9 |
HIP 43419 |
23.47 |
| 2026-06-16 12:00 |
08:49:12.04 |
+35:57:29.9 |
HIP 43419 |
22.72 |
| 2026-06-17 00:00 |
08:49:15.42 |
+35:57:08.9 |
HIP 43419 |
21.98 |
| 2026-06-17 12:00 |
08:49:18.83 |
+35:56:48.0 |
HIP 43419 |
21.22 |
| 2026-06-18 00:00 |
08:49:22.27 |
+35:56:27.1 |
HIP 43419 |
20.47 |
| 2026-06-18 12:00 |
08:49:25.73 |
+35:56:06.3 |
HIP 43419 |
19.72 |
| 2026-06-19 00:00 |
08:49:29.22 |
+35:55:45.5 |
HIP 43419 |
18.96 |
| 2026-06-19 12:00 |
08:49:32.74 |
+35:55:24.7 |
HIP 43419 |
18.21 |
| 2026-06-20 00:00 |
08:49:36.28 |
+35:55:04.0 |
HIP 43419 |
17.45 |
| 2026-06-20 12:00 |
08:49:39.84 |
+35:54:43.3 |
HIP 43419 |
16.70 |
| 2026-06-21 00:00 |
08:49:43.44 |
+35:54:22.6 |
HIP 43419 |
15.94 |
| 2026-06-21 12:00 |
08:49:47.06 |
+35:54:02.0 |
HIP 43419 |
15.19 |
| 2026-06-22 00:00 |
08:49:50.70 |
+35:53:41.4 |
HIP 43419 |
14.44 |