メタデータ
| 項目 |
値 |
| Designation |
C/2003 G1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-02-03T15:42:49.510080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:27Z |
| Obs used |
1472 |
| NEO |
- |
| M1 |
6.200 |
| K1 |
9.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2003-08-25.0000000 |
| e |
1.00137916 |
| q (au) |
4.916288 |
| a (au) |
-3564.686955 |
| i (deg) |
66.849308 |
| Ω (om, deg) |
246.088785 |
| ω (w, deg) |
11.422485 |
| M (ma, deg) |
0.000937 |
等級
散乱 + 全体線形
$$
M_a = (1.546 + 5.811\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
1.546 |
| n |
5.811 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-07-29 00:00 |
02:58:27.08 |
+44:11:11.7 |
HIP 13903 |
15.04 |
| 2026-07-29 12:00 |
02:58:27.97 |
+44:11:30.0 |
HIP 13903 |
15.26 |
| 2026-07-30 00:00 |
02:58:28.82 |
+44:11:48.3 |
HIP 13903 |
15.49 |
| 2026-07-30 12:00 |
02:58:29.64 |
+44:12:06.5 |
HIP 13903 |
15.72 |
| 2026-07-31 00:00 |
02:58:30.44 |
+44:12:24.6 |
HIP 13903 |
15.96 |
| 2026-07-31 12:00 |
02:58:31.20 |
+44:12:42.7 |
HIP 13903 |
16.20 |
| 2026-08-01 00:00 |
02:58:31.94 |
+44:13:00.8 |
HIP 13903 |
16.44 |
| 2026-08-01 12:00 |
02:58:32.64 |
+44:13:18.7 |
HIP 13903 |
16.69 |
| 2026-08-02 00:00 |
02:58:33.31 |
+44:13:36.7 |
HIP 13903 |
16.94 |
| 2026-08-02 12:00 |
02:58:33.95 |
+44:13:54.5 |
HIP 13903 |
17.20 |
| 2026-08-03 00:00 |
02:58:34.56 |
+44:14:12.3 |
HIP 13903 |
17.46 |
| 2026-08-03 12:00 |
02:58:35.14 |
+44:14:30.0 |
HIP 13903 |
17.72 |
| 2026-08-04 00:00 |
02:58:35.69 |
+44:14:47.7 |
HIP 13903 |
17.98 |
| 2026-08-04 12:00 |
02:58:36.21 |
+44:15:05.3 |
HIP 13903 |
18.24 |
| 2026-08-05 00:00 |
02:58:36.70 |
+44:15:22.9 |
HIP 13804 |
18.44 |
| 2026-08-05 12:00 |
02:58:37.15 |
+44:15:40.3 |
HIP 13804 |
18.23 |
| 2026-08-06 00:00 |
02:58:37.58 |
+44:15:57.7 |
HIP 13804 |
18.02 |
| 2026-08-06 12:00 |
02:58:37.97 |
+44:16:15.0 |
HIP 13804 |
17.81 |
| 2026-08-07 00:00 |
02:58:38.33 |
+44:16:32.3 |
HIP 13804 |
17.60 |
| 2026-08-07 12:00 |
02:58:38.66 |
+44:16:49.5 |
HIP 13804 |
17.39 |
| 2026-08-08 00:00 |
02:58:38.96 |
+44:17:06.6 |
HIP 13804 |
17.18 |
| 2026-08-08 12:00 |
02:58:39.23 |
+44:17:23.6 |
HIP 13804 |
16.97 |
| 2026-08-09 00:00 |
02:58:39.47 |
+44:17:40.5 |
HIP 13804 |
16.76 |
| 2026-08-09 12:00 |
02:58:39.67 |
+44:17:57.4 |
HIP 13804 |
16.55 |
| 2026-08-10 00:00 |
02:58:39.85 |
+44:18:14.2 |
HIP 13804 |
16.34 |
| 2026-08-10 12:00 |
02:58:39.99 |
+44:18:30.9 |
HIP 13804 |
16.13 |
| 2026-08-11 00:00 |
02:58:40.10 |
+44:18:47.5 |
HIP 13804 |
15.92 |
| 2026-08-11 12:00 |
02:58:40.17 |
+44:19:04.0 |
HIP 13804 |
15.71 |
| 2026-08-12 00:00 |
02:58:40.22 |
+44:19:20.4 |
HIP 13804 |
15.50 |
| 2026-08-12 12:00 |
02:58:40.24 |
+44:19:36.8 |
HIP 13804 |
15.29 |
| 2026-08-13 00:00 |
02:58:40.22 |
+44:19:53.0 |
HIP 13804 |
15.08 |
| 2026-08-13 12:00 |
02:58:40.17 |
+44:20:09.2 |
HIP 13804 |
14.87 |
| 2026-08-14 00:00 |
02:58:40.09 |
+44:20:25.2 |
HIP 13804 |
14.66 |
| 2026-08-14 12:00 |
02:58:39.98 |
+44:20:41.2 |
HIP 13804 |
14.44 |
| 2026-08-15 00:00 |
02:58:39.83 |
+44:20:57.1 |
HIP 13804 |
14.23 |
| 2026-08-15 12:00 |
02:58:39.65 |
+44:21:12.9 |
HIP 13804 |
14.02 |
| 2026-08-16 00:00 |
02:58:39.45 |
+44:21:28.5 |
HIP 13804 |
13.80 |
| 2026-08-16 12:00 |
02:58:39.21 |
+44:21:44.1 |
HIP 13804 |
13.58 |
| 2026-08-17 00:00 |
02:58:38.93 |
+44:21:59.6 |
HIP 13804 |
13.37 |
| 2026-08-17 12:00 |
02:58:38.63 |
+44:22:14.9 |
HIP 13804 |
13.15 |
| 2026-08-18 00:00 |
02:58:38.29 |
+44:22:30.2 |
HIP 13804 |
12.93 |
| 2026-08-18 12:00 |
02:58:37.93 |
+44:22:45.4 |
HIP 13804 |
12.71 |
| 2026-08-19 00:00 |
02:58:37.53 |
+44:23:00.4 |
HIP 13804 |
12.48 |