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) |
| 2026-03-26 00:00 |
03:05:36.52 |
-10:03:17.2 |
HIP 14327 |
14.33 |
| 2026-03-26 12:00 |
03:05:40.11 |
-10:02:48.4 |
HIP 14327 |
15.34 |
| 2026-03-27 00:00 |
03:05:43.72 |
-10:02:19.7 |
HIP 14327 |
16.34 |
| 2026-03-27 12:00 |
03:05:47.36 |
-10:01:51.2 |
HIP 14327 |
17.36 |
| 2026-03-28 00:00 |
03:05:51.02 |
-10:01:22.8 |
HIP 14455 |
17.24 |
| 2026-03-28 12:00 |
03:05:54.70 |
-10:00:54.5 |
HIP 14455 |
17.10 |
| 2026-03-29 00:00 |
03:05:58.41 |
-10:00:26.3 |
HIP 14455 |
17.01 |
| 2026-03-29 12:00 |
03:06:02.14 |
-09:59:58.3 |
HIP 14455 |
16.98 |
| 2026-03-30 00:00 |
03:06:05.89 |
-09:59:30.3 |
HIP 14455 |
17.01 |
| 2026-03-30 12:00 |
03:06:09.67 |
-09:59:02.5 |
HIP 14455 |
17.10 |
| 2026-03-31 00:00 |
03:06:13.47 |
-09:58:34.9 |
HIP 14455 |
17.25 |
| 2026-03-31 12:00 |
03:06:17.29 |
-09:58:07.3 |
HIP 14455 |
17.45 |
| 2026-04-01 00:00 |
03:06:21.13 |
-09:57:39.9 |
HIP 14455 |
17.71 |
| 2026-04-01 12:00 |
03:06:24.99 |
-09:57:12.6 |
HIP 14455 |
18.02 |
| 2026-04-02 00:00 |
03:06:28.87 |
-09:56:45.5 |
HIP 14455 |
18.39 |
| 2026-04-02 12:00 |
03:06:32.78 |
-09:56:18.5 |
HIP 14455 |
18.81 |
| 2026-04-03 00:00 |
03:06:36.71 |
-09:55:51.6 |
HIP 14455 |
19.27 |
| 2026-04-03 12:00 |
03:06:40.65 |
-09:55:24.9 |
HIP 14455 |
19.78 |
| 2026-04-04 00:00 |
03:06:44.62 |
-09:54:58.4 |
HIP 14455 |
20.33 |
| 2026-04-04 12:00 |
03:06:48.61 |
-09:54:31.9 |
HIP 14455 |
20.92 |
| 2026-04-05 00:00 |
03:06:52.61 |
-09:54:05.7 |
HIP 14455 |
21.55 |
| 2026-04-05 12:00 |
03:06:56.64 |
-09:53:39.5 |
HIP 14455 |
22.21 |
| 2026-04-06 00:00 |
03:07:00.68 |
-09:53:13.6 |
HIP 14455 |
22.90 |
| 2026-04-06 12:00 |
03:07:04.75 |
-09:52:47.7 |
HIP 14455 |
23.62 |
| 2026-04-07 00:00 |
03:07:08.83 |
-09:52:22.1 |
HIP 14455 |
24.37 |
| 2026-04-07 12:00 |
03:07:12.93 |
-09:51:56.6 |
HIP 14455 |
25.14 |
| 2026-04-08 00:00 |
03:07:17.05 |
-09:51:31.2 |
HIP 14583 |
25.60 |
| 2026-04-08 12:00 |
03:07:21.19 |
-09:51:06.0 |
HIP 14599 |
24.67 |
| 2026-04-09 00:00 |
03:07:25.35 |
-09:50:41.0 |
HIP 14599 |
23.68 |
| 2026-04-09 12:00 |
03:07:29.52 |
-09:50:16.2 |
HIP 14599 |
22.71 |
| 2026-04-10 00:00 |
03:07:33.71 |
-09:49:51.5 |
HIP 14599 |
21.74 |
| 2026-04-10 12:00 |
03:07:37.92 |
-09:49:27.0 |
HIP 14599 |
20.79 |
| 2026-04-11 00:00 |
03:07:42.15 |
-09:49:02.6 |
HIP 14599 |
19.86 |
| 2026-04-11 12:00 |
03:07:46.39 |
-09:48:38.4 |
HIP 14599 |
18.95 |
| 2026-04-12 00:00 |
03:07:50.65 |
-09:48:14.4 |
HIP 14599 |
18.06 |
| 2026-04-12 12:00 |
03:07:54.92 |
-09:47:50.6 |
HIP 14599 |
17.20 |
| 2026-04-13 00:00 |
03:07:59.21 |
-09:47:27.0 |
HIP 14599 |
16.37 |
| 2026-04-13 12:00 |
03:08:03.51 |
-09:47:03.5 |
HIP 14599 |
15.59 |
| 2026-04-14 00:00 |
03:08:07.84 |
-09:46:40.2 |
HIP 14599 |
14.84 |
| 2026-04-14 12:00 |
03:08:12.17 |
-09:46:17.1 |
HIP 14599 |
14.16 |
| 2026-04-15 00:00 |
03:08:16.52 |
-09:45:54.2 |
HIP 14599 |
13.53 |
| 2026-04-15 12:00 |
03:08:20.88 |
-09:45:31.5 |
HIP 14599 |
12.98 |
| 2026-04-16 00:00 |
03:08:25.26 |
-09:45:08.9 |
HIP 14599 |
12.51 |