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) |
| 2026-03-26 00:00 |
08:48:36.95 |
+36:41:19.8 |
HIP 43296 |
12.04 |
| 2026-03-26 12:00 |
08:48:33.61 |
+36:41:16.1 |
HIP 43296 |
12.39 |
| 2026-03-27 00:00 |
08:48:30.31 |
+36:41:12.3 |
HIP 43296 |
12.77 |
| 2026-03-27 12:00 |
08:48:27.05 |
+36:41:08.2 |
HIP 43296 |
13.15 |
| 2026-03-28 00:00 |
08:48:23.84 |
+36:41:03.8 |
HIP 43296 |
13.55 |
| 2026-03-28 12:00 |
08:48:20.67 |
+36:40:59.3 |
HIP 43296 |
13.96 |
| 2026-03-29 00:00 |
08:48:17.54 |
+36:40:54.5 |
HIP 43296 |
14.38 |
| 2026-03-29 12:00 |
08:48:14.45 |
+36:40:49.5 |
HIP 43296 |
14.80 |
| 2026-03-30 00:00 |
08:48:11.40 |
+36:40:44.3 |
HIP 43296 |
15.23 |
| 2026-03-30 12:00 |
08:48:08.40 |
+36:40:38.8 |
HIP 43296 |
15.66 |
| 2026-03-31 00:00 |
08:48:05.43 |
+36:40:33.1 |
HIP 43155 |
15.62 |
| 2026-03-31 12:00 |
08:48:02.52 |
+36:40:27.2 |
HIP 43155 |
15.23 |
| 2026-04-01 00:00 |
08:47:59.64 |
+36:40:21.1 |
HIP 43155 |
14.85 |
| 2026-04-01 12:00 |
08:47:56.81 |
+36:40:14.8 |
HIP 43155 |
14.49 |
| 2026-04-02 00:00 |
08:47:54.02 |
+36:40:08.2 |
HIP 43155 |
14.14 |
| 2026-04-02 12:00 |
08:47:51.27 |
+36:40:01.5 |
HIP 43155 |
13.81 |
| 2026-04-03 00:00 |
08:47:48.57 |
+36:39:54.5 |
HIP 43155 |
13.49 |
| 2026-04-03 12:00 |
08:47:45.91 |
+36:39:47.3 |
HIP 43155 |
13.19 |
| 2026-04-04 00:00 |
08:47:43.30 |
+36:39:39.9 |
HIP 43155 |
12.90 |
| 2026-04-04 12:00 |
08:47:40.73 |
+36:39:32.3 |
HIP 43155 |
12.63 |
| 2026-04-05 00:00 |
08:47:38.20 |
+36:39:24.5 |
HIP 43155 |
12.38 |
| 2026-04-05 12:00 |
08:47:35.72 |
+36:39:16.5 |
HIP 43155 |
12.14 |
| 2026-04-06 00:00 |
08:47:33.28 |
+36:39:08.2 |
HIP 43155 |
11.91 |
| 2026-04-06 12:00 |
08:47:30.88 |
+36:38:59.8 |
HIP 43155 |
11.70 |
| 2026-04-07 00:00 |
08:47:28.53 |
+36:38:51.1 |
HIP 43155 |
11.51 |
| 2026-04-07 12:00 |
08:47:26.23 |
+36:38:42.3 |
HIP 43155 |
11.33 |
| 2026-04-08 00:00 |
08:47:23.97 |
+36:38:33.3 |
HIP 43155 |
11.17 |
| 2026-04-08 12:00 |
08:47:21.75 |
+36:38:24.0 |
HIP 43155 |
11.02 |
| 2026-04-09 00:00 |
08:47:19.58 |
+36:38:14.6 |
HIP 43155 |
10.89 |
| 2026-04-09 12:00 |
08:47:17.45 |
+36:38:05.0 |
HIP 43155 |
10.77 |
| 2026-04-10 00:00 |
08:47:15.37 |
+36:37:55.1 |
HIP 43155 |
10.66 |
| 2026-04-10 12:00 |
08:47:13.34 |
+36:37:45.1 |
HIP 43155 |
10.57 |
| 2026-04-11 00:00 |
08:47:11.35 |
+36:37:34.9 |
HIP 43155 |
10.49 |
| 2026-04-11 12:00 |
08:47:09.40 |
+36:37:24.5 |
HIP 43155 |
10.42 |
| 2026-04-12 00:00 |
08:47:07.50 |
+36:37:13.9 |
HIP 43155 |
10.36 |
| 2026-04-12 12:00 |
08:47:05.65 |
+36:37:03.1 |
HIP 43155 |
10.31 |
| 2026-04-13 00:00 |
08:47:03.84 |
+36:36:52.1 |
HIP 43155 |
10.28 |
| 2026-04-13 12:00 |
08:47:02.08 |
+36:36:41.0 |
HIP 43155 |
10.25 |
| 2026-04-14 00:00 |
08:47:00.36 |
+36:36:29.6 |
HIP 43155 |
10.23 |
| 2026-04-14 12:00 |
08:46:58.69 |
+36:36:18.1 |
HIP 43155 |
10.22 |
| 2026-04-15 00:00 |
08:46:57.06 |
+36:36:06.4 |
HIP 43155 |
10.22 |
| 2026-04-15 12:00 |
08:46:55.48 |
+36:35:54.5 |
HIP 43155 |
10.22 |
| 2026-04-16 00:00 |
08:46:53.95 |
+36:35:42.5 |
HIP 43155 |
10.23 |