C/2014 G3 (PANSTARRS)
メタデータ
| 項目 |
値 |
| Designation |
C/2014 G3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2015-02-02T13:50:16.434240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:52Z |
| Obs used |
270 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
12.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2014-09-25.0000000 |
| e |
0.91564120 |
| q (au) |
4.697983 |
| a (au) |
55.690492 |
| i (deg) |
155.824547 |
| Ω (om, deg) |
4.542217 |
| ω (w, deg) |
147.803219 |
| M (ma, deg) |
359.690331 |
等級
散乱 + 全体線形
$$
M_a = (4.926 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.926 |
| n |
6.000 |
| gf |
0.941 |
| gb |
-0.837 |
| k |
0.999 |
| δ90 |
9.845 |
| 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 |
05:33:30.71 |
-00:58:55.1 |
HIP 26106 |
8.90 |
| 2026-02-03 12:00 |
05:33:26.47 |
-00:58:30.9 |
HIP 26106 |
10.03 |
| 2026-02-04 00:00 |
05:33:22.27 |
-00:58:06.5 |
HIP 26106 |
11.16 |
| 2026-02-04 12:00 |
05:33:18.11 |
-00:57:41.9 |
HIP 26063 |
12.13 |
| 2026-02-05 00:00 |
05:33:14.00 |
-00:57:17.1 |
HIP 26063 |
12.84 |
| 2026-02-05 12:00 |
05:33:09.92 |
-00:56:52.2 |
HIP 26063 |
13.60 |
| 2026-02-06 00:00 |
05:33:05.88 |
-00:56:27.0 |
HIP 26063 |
14.41 |
| 2026-02-06 12:00 |
05:33:01.89 |
-00:56:01.7 |
HIP 26063 |
15.25 |
| 2026-02-07 00:00 |
05:32:57.94 |
-00:55:36.2 |
HIP 26063 |
16.11 |
| 2026-02-07 12:00 |
05:32:54.02 |
-00:55:10.5 |
HIP 26063 |
17.00 |
| 2026-02-08 00:00 |
05:32:50.15 |
-00:54:44.6 |
HIP 26063 |
17.90 |
| 2026-02-08 12:00 |
05:32:46.33 |
-00:54:18.5 |
HIP 26063 |
18.81 |
| 2026-02-09 00:00 |
05:32:42.54 |
-00:53:52.3 |
HIP 26063 |
19.73 |
| 2026-02-09 12:00 |
05:32:38.80 |
-00:53:25.9 |
HIP 26063 |
20.66 |
| 2026-02-10 00:00 |
05:32:35.10 |
-00:52:59.4 |
HIP 26063 |
21.60 |
| 2026-02-10 12:00 |
05:32:31.44 |
-00:52:32.6 |
HIP 26063 |
22.54 |
| 2026-02-11 00:00 |
05:32:27.82 |
-00:52:05.7 |
HIP 26063 |
23.48 |
| 2026-02-11 12:00 |
05:32:24.25 |
-00:51:38.7 |
HIP 26063 |
24.42 |
| 2026-02-12 00:00 |
05:32:20.72 |
-00:51:11.5 |
HIP 26063 |
25.35 |
| 2026-02-12 12:00 |
05:32:17.24 |
-00:50:44.1 |
HIP 26063 |
26.29 |
| 2026-02-13 00:00 |
05:32:13.80 |
-00:50:16.6 |
HIP 26012 |
27.21 |
| 2026-02-13 12:00 |
05:32:10.40 |
-00:49:49.0 |
HIP 26012 |
28.01 |
| 2026-02-14 00:00 |
05:32:07.05 |
-00:49:21.1 |
HIP 26012 |
28.82 |
| 2026-02-14 12:00 |
05:32:03.74 |
-00:48:53.2 |
HIP 26012 |
29.64 |
| 2026-02-15 00:00 |
05:32:00.47 |
-00:48:25.1 |
HIP 26012 |
30.46 |
| 2026-02-15 12:00 |
05:31:57.25 |
-00:47:56.8 |
HIP 25930 |
30.01 |
| 2026-02-16 00:00 |
05:31:54.08 |
-00:47:28.5 |
HIP 25930 |
29.57 |
| 2026-02-16 12:00 |
05:31:50.95 |
-00:47:00.0 |
HIP 25930 |
29.15 |
| 2026-02-17 00:00 |
05:31:47.87 |
-00:46:31.3 |
HIP 25930 |
28.75 |
| 2026-02-17 12:00 |
05:31:44.83 |
-00:46:02.5 |
HIP 25930 |
28.36 |
| 2026-02-18 00:00 |
05:31:41.84 |
-00:45:33.6 |
HIP 25930 |
28.00 |
| 2026-02-18 12:00 |
05:31:38.89 |
-00:45:04.6 |
HIP 25930 |
27.66 |
| 2026-02-19 00:00 |
05:31:35.99 |
-00:44:35.4 |
HIP 25930 |
27.33 |
| 2026-02-19 12:00 |
05:31:33.13 |
-00:44:06.2 |
HIP 25930 |
27.03 |
| 2026-02-20 00:00 |
05:31:30.32 |
-00:43:36.8 |
HIP 25930 |
26.75 |
| 2026-02-20 12:00 |
05:31:27.56 |
-00:43:07.3 |
HIP 25930 |
26.48 |
| 2026-02-21 00:00 |
05:31:24.84 |
-00:42:37.7 |
HIP 25930 |
26.23 |
| 2026-02-21 12:00 |
05:31:22.17 |
-00:42:07.9 |
HIP 25732 |
25.85 |
| 2026-02-22 00:00 |
05:31:19.54 |
-00:41:38.1 |
HIP 25732 |
25.34 |
| 2026-02-22 12:00 |
05:31:16.96 |
-00:41:08.2 |
HIP 25732 |
24.85 |
| 2026-02-23 00:00 |
05:31:14.43 |
-00:40:38.1 |
HIP 25732 |
24.39 |
| 2026-02-23 12:00 |
05:31:11.95 |
-00:40:08.0 |
HIP 25732 |
23.97 |
| 2026-02-24 00:00 |
05:31:09.51 |
-00:39:37.8 |
HIP 25732 |
23.57 |