C/2013 G3 (PANSTARRS)
メタデータ
| 項目 |
値 |
| Designation |
C/2013 G3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-11-15T04:36:22.164480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:32Z |
| Obs used |
902 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
12.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2014-06-16.0000000 |
| e |
1.00046366 |
| q (au) |
3.852198 |
| a (au) |
-8308.154934 |
| i (deg) |
64.671516 |
| Ω (om, deg) |
208.130504 |
| ω (w, deg) |
76.495501 |
| M (ma, deg) |
-0.000198 |
等級
散乱 + 全体線形
$$
M_a = (6.310 + 4.874\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.310 |
| n |
4.874 |
| gf |
0.980 |
| gb |
-0.500 |
| k |
1.000 |
| 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 |
03:02:17.42 |
-10:54:39.0 |
HIP 14235 |
18.71 |
| 2026-02-03 12:00 |
03:02:17.49 |
-10:54:11.8 |
HIP 14235 |
18.79 |
| 2026-02-04 00:00 |
03:02:17.60 |
-10:53:44.6 |
HIP 14235 |
18.87 |
| 2026-02-04 12:00 |
03:02:17.75 |
-10:53:17.2 |
HIP 14235 |
18.96 |
| 2026-02-05 00:00 |
03:02:17.94 |
-10:52:49.6 |
HIP 14235 |
19.04 |
| 2026-02-05 12:00 |
03:02:18.17 |
-10:52:21.9 |
HIP 14235 |
19.13 |
| 2026-02-06 00:00 |
03:02:18.44 |
-10:51:54.1 |
HIP 14235 |
19.22 |
| 2026-02-06 12:00 |
03:02:18.75 |
-10:51:26.1 |
HIP 14235 |
19.32 |
| 2026-02-07 00:00 |
03:02:19.10 |
-10:50:58.0 |
HIP 14235 |
19.42 |
| 2026-02-07 12:00 |
03:02:19.49 |
-10:50:29.7 |
HIP 14235 |
19.52 |
| 2026-02-08 00:00 |
03:02:19.92 |
-10:50:01.3 |
HIP 14151 |
19.51 |
| 2026-02-08 12:00 |
03:02:20.39 |
-10:49:32.8 |
HIP 14151 |
19.03 |
| 2026-02-09 00:00 |
03:02:20.90 |
-10:49:04.2 |
HIP 14151 |
18.54 |
| 2026-02-09 12:00 |
03:02:21.46 |
-10:48:35.4 |
HIP 14151 |
18.06 |
| 2026-02-10 00:00 |
03:02:22.05 |
-10:48:06.5 |
HIP 14151 |
17.57 |
| 2026-02-10 12:00 |
03:02:22.68 |
-10:47:37.5 |
HIP 14151 |
17.07 |
| 2026-02-11 00:00 |
03:02:23.36 |
-10:47:08.4 |
HIP 14151 |
16.58 |
| 2026-02-11 12:00 |
03:02:24.07 |
-10:46:39.2 |
HIP 14151 |
16.09 |
| 2026-02-12 00:00 |
03:02:24.82 |
-10:46:09.9 |
HIP 14151 |
15.59 |
| 2026-02-12 12:00 |
03:02:25.61 |
-10:45:40.4 |
HIP 14151 |
15.10 |
| 2026-02-13 00:00 |
03:02:26.45 |
-10:45:10.9 |
HIP 14151 |
14.60 |
| 2026-02-13 12:00 |
03:02:27.32 |
-10:44:41.2 |
HIP 14151 |
14.11 |
| 2026-02-14 00:00 |
03:02:28.23 |
-10:44:11.5 |
HIP 14151 |
13.62 |
| 2026-02-14 12:00 |
03:02:29.18 |
-10:43:41.6 |
HIP 14151 |
13.13 |
| 2026-02-15 00:00 |
03:02:30.17 |
-10:43:11.7 |
HIP 14151 |
12.65 |
| 2026-02-15 12:00 |
03:02:31.20 |
-10:42:41.7 |
HIP 14151 |
12.17 |
| 2026-02-16 00:00 |
03:02:32.27 |
-10:42:11.6 |
HIP 14151 |
11.70 |
| 2026-02-16 12:00 |
03:02:33.38 |
-10:41:41.4 |
HIP 14151 |
11.24 |
| 2026-02-17 00:00 |
03:02:34.53 |
-10:41:11.1 |
HIP 14151 |
10.79 |
| 2026-02-17 12:00 |
03:02:35.71 |
-10:40:40.7 |
HIP 14151 |
10.36 |
| 2026-02-18 00:00 |
03:02:36.94 |
-10:40:10.3 |
HIP 14151 |
9.94 |
| 2026-02-18 12:00 |
03:02:38.20 |
-10:39:39.8 |
HIP 14151 |
9.54 |
| 2026-02-19 00:00 |
03:02:39.51 |
-10:39:09.2 |
HIP 14151 |
9.16 |
| 2026-02-19 12:00 |
03:02:40.85 |
-10:38:38.6 |
HIP 14151 |
8.81 |
| 2026-02-20 00:00 |
03:02:42.23 |
-10:38:07.9 |
HIP 14151 |
8.49 |
| 2026-02-20 12:00 |
03:02:43.65 |
-10:37:37.2 |
HIP 14151 |
8.21 |
| 2026-02-21 00:00 |
03:02:45.10 |
-10:37:06.3 |
HIP 14151 |
7.98 |
| 2026-02-21 12:00 |
03:02:46.60 |
-10:36:35.5 |
HIP 14151 |
7.79 |
| 2026-02-22 00:00 |
03:02:48.13 |
-10:36:04.5 |
HIP 14151 |
7.66 |
| 2026-02-22 12:00 |
03:02:49.70 |
-10:35:33.6 |
HIP 14151 |
7.58 |
| 2026-02-23 00:00 |
03:02:51.30 |
-10:35:02.5 |
HIP 14151 |
7.57 |
| 2026-02-23 12:00 |
03:02:52.95 |
-10:34:31.5 |
HIP 14151 |
7.62 |
| 2026-02-24 00:00 |
03:02:54.63 |
-10:34:00.4 |
HIP 14151 |
7.73 |