メタデータ
| 項目 |
値 |
| Designation |
C/2000 G2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-02-06T05:07:48.432000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:04Z |
| Obs used |
136 |
| NEO |
- |
| M1 |
12.800 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2000-04-19.0000000 |
| e |
0.80953903 |
| q (au) |
2.716942 |
| a (au) |
14.265084 |
| i (deg) |
170.479176 |
| Ω (om, deg) |
328.384926 |
| ω (w, deg) |
101.764704 |
| M (ma, deg) |
1.331502 |
等級
散乱 + 全体線形
$$
M_a = (13.341 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.341 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.713 |
| k |
0.800 |
| 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) |
| 2026-06-01 00:00 |
03:09:19.44 |
+08:30:27.5 |
HIP 14607 |
10.29 |
| 2026-06-01 12:00 |
03:09:23.11 |
+08:30:39.1 |
HIP 14607 |
11.22 |
| 2026-06-02 00:00 |
03:09:26.77 |
+08:30:50.5 |
HIP 14607 |
12.14 |
| 2026-06-02 12:00 |
03:09:30.41 |
+08:31:01.8 |
HIP 14607 |
13.06 |
| 2026-06-03 00:00 |
03:09:34.05 |
+08:31:13.0 |
HIP 14607 |
13.98 |
| 2026-06-03 12:00 |
03:09:37.67 |
+08:31:24.0 |
HIP 14607 |
14.89 |
| 2026-06-04 00:00 |
03:09:41.27 |
+08:31:34.8 |
HIP 14607 |
15.80 |
| 2026-06-04 12:00 |
03:09:44.87 |
+08:31:45.6 |
HIP 14607 |
16.71 |
| 2026-06-05 00:00 |
03:09:48.45 |
+08:31:56.2 |
HIP 14607 |
17.61 |
| 2026-06-05 12:00 |
03:09:52.02 |
+08:32:06.6 |
HIP 14607 |
18.51 |
| 2026-06-06 00:00 |
03:09:55.57 |
+08:32:16.9 |
HIP 14607 |
19.41 |
| 2026-06-06 12:00 |
03:09:59.11 |
+08:32:27.1 |
HIP 14607 |
20.30 |
| 2026-06-07 00:00 |
03:10:02.63 |
+08:32:37.1 |
HIP 14607 |
21.18 |
| 2026-06-07 12:00 |
03:10:06.14 |
+08:32:47.0 |
HIP 14607 |
22.07 |
| 2026-06-08 00:00 |
03:10:09.64 |
+08:32:56.8 |
HIP 14607 |
22.95 |
| 2026-06-08 12:00 |
03:10:13.12 |
+08:33:06.3 |
HIP 14607 |
23.82 |
| 2026-06-09 00:00 |
03:10:16.58 |
+08:33:15.8 |
HIP 14607 |
24.69 |
| 2026-06-09 12:00 |
03:10:20.03 |
+08:33:25.1 |
HIP 14607 |
25.56 |
| 2026-06-10 00:00 |
03:10:23.46 |
+08:33:34.2 |
HIP 14607 |
26.42 |
| 2026-06-10 12:00 |
03:10:26.88 |
+08:33:43.2 |
HIP 14607 |
27.28 |
| 2026-06-11 00:00 |
03:10:30.28 |
+08:33:52.1 |
HIP 14607 |
28.13 |
| 2026-06-11 12:00 |
03:10:33.66 |
+08:34:00.8 |
HIP 14607 |
28.98 |
| 2026-06-12 00:00 |
03:10:37.03 |
+08:34:09.3 |
HIP 14607 |
29.82 |
| 2026-06-12 12:00 |
03:10:40.37 |
+08:34:17.7 |
HIP 14607 |
30.66 |
| 2026-06-13 00:00 |
03:10:43.70 |
+08:34:25.9 |
HIP 14842 |
30.88 |
| 2026-06-13 12:00 |
03:10:47.02 |
+08:34:34.0 |
HIP 14842 |
30.63 |
| 2026-06-14 00:00 |
03:10:50.31 |
+08:34:41.9 |
HIP 14842 |
30.40 |
| 2026-06-14 12:00 |
03:10:53.58 |
+08:34:49.7 |
HIP 14842 |
30.18 |
| 2026-06-15 00:00 |
03:10:56.84 |
+08:34:57.3 |
HIP 14842 |
29.99 |
| 2026-06-15 12:00 |
03:11:00.08 |
+08:35:04.7 |
HIP 14842 |
29.82 |
| 2026-06-16 00:00 |
03:11:03.30 |
+08:35:12.0 |
HIP 14842 |
29.67 |
| 2026-06-16 12:00 |
03:11:06.50 |
+08:35:19.2 |
HIP 14842 |
29.53 |
| 2026-06-17 00:00 |
03:11:09.67 |
+08:35:26.1 |
HIP 14842 |
29.42 |
| 2026-06-17 12:00 |
03:11:12.83 |
+08:35:32.9 |
HIP 14842 |
29.33 |
| 2026-06-18 00:00 |
03:11:15.97 |
+08:35:39.6 |
HIP 14842 |
29.25 |
| 2026-06-18 12:00 |
03:11:19.09 |
+08:35:46.1 |
HIP 14842 |
29.20 |
| 2026-06-19 00:00 |
03:11:22.19 |
+08:35:52.4 |
HIP 14842 |
29.17 |
| 2026-06-19 12:00 |
03:11:25.26 |
+08:35:58.6 |
HIP 14842 |
29.15 |
| 2026-06-20 00:00 |
03:11:28.31 |
+08:36:04.6 |
HIP 14842 |
29.15 |
| 2026-06-20 12:00 |
03:11:31.35 |
+08:36:10.4 |
HIP 14842 |
29.17 |
| 2026-06-21 00:00 |
03:11:34.36 |
+08:36:16.1 |
HIP 14842 |
29.21 |
| 2026-06-21 12:00 |
03:11:37.35 |
+08:36:21.6 |
HIP 14842 |
29.26 |
| 2026-06-22 00:00 |
03:11:40.31 |
+08:36:27.0 |
HIP 14842 |
29.33 |