C/2014 G1 (PANSTARRS)
メタデータ
| 項目 |
値 |
| Designation |
C/2014 G1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-11-06T16:43:34.233600Z |
| Orbit solution date (soln_date, UTC) |
2022-06-20T23:12:31Z |
| Obs used |
89 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
12.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2014-03-11.0000000 |
| e |
0.99470139 |
| q (au) |
5.468636 |
| a (au) |
1032.088644 |
| i (deg) |
165.640250 |
| Ω (om, deg) |
337.927549 |
| ω (w, deg) |
77.054859 |
| M (ma, deg) |
0.003695 |
等級
散乱 + 全体線形
$$
M_a = (4.272 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.272 |
| n |
6.000 |
| gf |
0.994 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
9.998 |
| 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 |
09:08:42.75 |
+10:33:53.6 |
HIP 44798 |
15.53 |
| 2026-02-03 12:00 |
09:08:37.33 |
+10:34:15.5 |
HIP 44798 |
14.16 |
| 2026-02-04 00:00 |
09:08:31.90 |
+10:34:37.5 |
HIP 44798 |
12.79 |
| 2026-02-04 12:00 |
09:08:26.47 |
+10:34:59.5 |
HIP 44798 |
11.43 |
| 2026-02-05 00:00 |
09:08:21.05 |
+10:35:21.6 |
HIP 44798 |
10.08 |
| 2026-02-05 12:00 |
09:08:15.63 |
+10:35:43.8 |
HIP 44798 |
8.74 |
| 2026-02-06 00:00 |
09:08:10.21 |
+10:36:06.0 |
HIP 44798 |
7.41 |
| 2026-02-06 12:00 |
09:08:04.79 |
+10:36:28.2 |
HIP 44798 |
6.10 |
| 2026-02-07 00:00 |
09:07:59.37 |
+10:36:50.5 |
HIP 44798 |
4.83 |
| 2026-02-07 12:00 |
09:07:53.96 |
+10:37:12.9 |
HIP 44798 |
3.65 |
| 2026-02-08 00:00 |
09:07:48.55 |
+10:37:35.3 |
HIP 44798 |
2.67 |
| 2026-02-08 12:00 |
09:07:43.15 |
+10:37:57.7 |
HIP 44798 |
2.17 |
| 2026-02-09 00:00 |
09:07:37.74 |
+10:38:20.2 |
HIP 44798 |
2.47 |
| 2026-02-09 12:00 |
09:07:32.35 |
+10:38:42.7 |
HIP 44798 |
3.36 |
| 2026-02-10 00:00 |
09:07:26.96 |
+10:39:05.2 |
HIP 44798 |
4.50 |
| 2026-02-10 12:00 |
09:07:21.57 |
+10:39:27.8 |
HIP 44798 |
5.75 |
| 2026-02-11 00:00 |
09:07:16.19 |
+10:39:50.4 |
HIP 44798 |
7.04 |
| 2026-02-11 12:00 |
09:07:10.82 |
+10:40:13.1 |
HIP 44798 |
8.36 |
| 2026-02-12 00:00 |
09:07:05.45 |
+10:40:35.7 |
HIP 44798 |
9.69 |
| 2026-02-12 12:00 |
09:07:00.09 |
+10:40:58.4 |
HIP 44798 |
11.03 |
| 2026-02-13 00:00 |
09:06:54.74 |
+10:41:21.2 |
HIP 44798 |
12.37 |
| 2026-02-13 12:00 |
09:06:49.39 |
+10:41:43.9 |
HIP 44798 |
13.72 |
| 2026-02-14 00:00 |
09:06:44.06 |
+10:42:06.7 |
HIP 44798 |
15.06 |
| 2026-02-14 12:00 |
09:06:38.73 |
+10:42:29.5 |
HIP 44798 |
16.41 |
| 2026-02-15 00:00 |
09:06:33.41 |
+10:42:52.3 |
HIP 44798 |
17.76 |
| 2026-02-15 12:00 |
09:06:28.11 |
+10:43:15.1 |
HIP 44798 |
19.11 |
| 2026-02-16 00:00 |
09:06:22.81 |
+10:43:37.9 |
HIP 44798 |
20.46 |
| 2026-02-16 12:00 |
09:06:17.52 |
+10:44:00.8 |
HIP 44798 |
21.80 |
| 2026-02-17 00:00 |
09:06:12.25 |
+10:44:23.6 |
HIP 44798 |
23.15 |
| 2026-02-17 12:00 |
09:06:06.98 |
+10:44:46.5 |
HIP 44548 |
23.23 |
| 2026-02-18 00:00 |
09:06:01.73 |
+10:45:09.3 |
HIP 44548 |
21.88 |
| 2026-02-18 12:00 |
09:05:56.49 |
+10:45:32.2 |
HIP 44548 |
20.54 |
| 2026-02-19 00:00 |
09:05:51.26 |
+10:45:55.1 |
HIP 44548 |
19.20 |
| 2026-02-19 12:00 |
09:05:46.05 |
+10:46:17.9 |
HIP 44548 |
17.87 |
| 2026-02-20 00:00 |
09:05:40.84 |
+10:46:40.8 |
HIP 44548 |
16.54 |
| 2026-02-20 12:00 |
09:05:35.66 |
+10:47:03.7 |
HIP 44548 |
15.21 |
| 2026-02-21 00:00 |
09:05:30.48 |
+10:47:26.5 |
HIP 44548 |
13.88 |
| 2026-02-21 12:00 |
09:05:25.33 |
+10:47:49.4 |
HIP 44548 |
12.56 |
| 2026-02-22 00:00 |
09:05:20.18 |
+10:48:12.2 |
HIP 44548 |
11.24 |
| 2026-02-22 12:00 |
09:05:15.06 |
+10:48:35.0 |
HIP 44548 |
9.93 |
| 2026-02-23 00:00 |
09:05:09.94 |
+10:48:57.8 |
HIP 44548 |
8.62 |
| 2026-02-23 12:00 |
09:05:04.85 |
+10:49:20.6 |
HIP 44548 |
7.31 |
| 2026-02-24 00:00 |
09:04:59.77 |
+10:49:43.3 |
HIP 44548 |
6.01 |