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 |
0.999 |
| gb |
-0.824 |
| 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) |
| 2026-09-20 00:00 |
03:21:12.69 |
-11:09:06.9 |
HIP 15658 |
19.09 |
| 2026-09-20 12:00 |
03:21:10.39 |
-11:09:48.9 |
HIP 15658 |
19.94 |
| 2026-09-21 00:00 |
03:21:08.05 |
-11:10:31.0 |
HIP 15658 |
20.80 |
| 2026-09-21 12:00 |
03:21:05.68 |
-11:11:12.9 |
HIP 15658 |
21.66 |
| 2026-09-22 00:00 |
03:21:03.27 |
-11:11:54.9 |
HIP 15658 |
22.53 |
| 2026-09-22 12:00 |
03:21:00.84 |
-11:12:36.7 |
HIP 15658 |
23.40 |
| 2026-09-23 00:00 |
03:20:58.37 |
-11:13:18.5 |
HIP 15483 |
23.25 |
| 2026-09-23 12:00 |
03:20:55.87 |
-11:14:00.3 |
HIP 15483 |
22.38 |
| 2026-09-24 00:00 |
03:20:53.34 |
-11:14:41.9 |
HIP 15483 |
21.51 |
| 2026-09-24 12:00 |
03:20:50.78 |
-11:15:23.5 |
HIP 15483 |
20.63 |
| 2026-09-25 00:00 |
03:20:48.18 |
-11:16:05.1 |
HIP 15483 |
19.76 |
| 2026-09-25 12:00 |
03:20:45.56 |
-11:16:46.5 |
HIP 15483 |
18.88 |
| 2026-09-26 00:00 |
03:20:42.90 |
-11:17:27.9 |
HIP 15483 |
18.01 |
| 2026-09-26 12:00 |
03:20:40.21 |
-11:18:09.2 |
HIP 15483 |
17.14 |
| 2026-09-27 00:00 |
03:20:37.49 |
-11:18:50.4 |
HIP 15483 |
16.27 |
| 2026-09-27 12:00 |
03:20:34.75 |
-11:19:31.5 |
HIP 15483 |
15.40 |
| 2026-09-28 00:00 |
03:20:31.97 |
-11:20:12.5 |
HIP 15483 |
14.54 |
| 2026-09-28 12:00 |
03:20:29.16 |
-11:20:53.4 |
HIP 15483 |
13.69 |
| 2026-09-29 00:00 |
03:20:26.32 |
-11:21:34.3 |
HIP 15483 |
12.84 |
| 2026-09-29 12:00 |
03:20:23.45 |
-11:22:15.0 |
HIP 15483 |
12.01 |
| 2026-09-30 00:00 |
03:20:20.55 |
-11:22:55.6 |
HIP 15483 |
11.20 |
| 2026-09-30 12:00 |
03:20:17.63 |
-11:23:36.2 |
HIP 15483 |
10.40 |
| 2026-10-01 00:00 |
03:20:14.67 |
-11:24:16.6 |
HIP 15483 |
9.64 |
| 2026-10-01 12:00 |
03:20:11.69 |
-11:24:56.9 |
HIP 15483 |
8.91 |
| 2026-10-02 00:00 |
03:20:08.68 |
-11:25:37.1 |
HIP 15483 |
8.24 |
| 2026-10-02 12:00 |
03:20:05.63 |
-11:26:17.2 |
HIP 15483 |
7.62 |
| 2026-10-03 00:00 |
03:20:02.57 |
-11:26:57.2 |
HIP 15483 |
7.09 |
| 2026-10-03 12:00 |
03:19:59.47 |
-11:27:37.0 |
HIP 15483 |
6.66 |
| 2026-10-04 00:00 |
03:19:56.34 |
-11:28:16.8 |
HIP 15483 |
6.35 |
| 2026-10-04 12:00 |
03:19:53.19 |
-11:28:56.4 |
HIP 15483 |
6.19 |
| 2026-10-05 00:00 |
03:19:50.01 |
-11:29:35.8 |
HIP 15483 |
6.19 |
| 2026-10-05 12:00 |
03:19:46.81 |
-11:30:15.2 |
HIP 15483 |
6.36 |
| 2026-10-06 00:00 |
03:19:43.57 |
-11:30:54.3 |
HIP 15483 |
6.67 |
| 2026-10-06 12:00 |
03:19:40.31 |
-11:31:33.4 |
HIP 15483 |
7.11 |
| 2026-10-07 00:00 |
03:19:37.03 |
-11:32:12.3 |
HIP 15483 |
7.67 |
| 2026-10-07 12:00 |
03:19:33.72 |
-11:32:51.1 |
HIP 15483 |
8.31 |
| 2026-10-08 00:00 |
03:19:30.38 |
-11:33:29.7 |
HIP 15483 |
9.03 |
| 2026-10-08 12:00 |
03:19:27.02 |
-11:34:08.1 |
HIP 15483 |
9.80 |
| 2026-10-09 00:00 |
03:19:23.63 |
-11:34:46.4 |
HIP 15483 |
10.62 |
| 2026-10-09 12:00 |
03:19:20.22 |
-11:35:24.6 |
HIP 15483 |
11.47 |
| 2026-10-10 00:00 |
03:19:16.78 |
-11:36:02.6 |
HIP 15483 |
12.36 |
| 2026-10-10 12:00 |
03:19:13.32 |
-11:36:40.4 |
HIP 15483 |
13.27 |
| 2026-10-11 00:00 |
03:19:09.84 |
-11:37:18.0 |
HIP 15483 |
14.20 |