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) |
| 2026-05-12 00:00 |
03:06:45.75 |
+08:21:03.0 |
HIP 14504 |
8.76 |
| 2026-05-12 12:00 |
03:06:49.68 |
+08:21:19.3 |
HIP 14504 |
7.75 |
| 2026-05-13 00:00 |
03:06:53.62 |
+08:21:35.5 |
HIP 14504 |
6.74 |
| 2026-05-13 12:00 |
03:06:57.55 |
+08:21:51.6 |
HIP 14504 |
5.73 |
| 2026-05-14 00:00 |
03:07:01.48 |
+08:22:07.6 |
HIP 14504 |
4.73 |
| 2026-05-14 12:00 |
03:07:05.41 |
+08:22:23.5 |
HIP 14504 |
3.72 |
| 2026-05-15 00:00 |
03:07:09.33 |
+08:22:39.3 |
HIP 14504 |
2.73 |
| 2026-05-15 12:00 |
03:07:13.26 |
+08:22:55.0 |
HIP 14504 |
1.74 |
| 2026-05-16 00:00 |
03:07:17.18 |
+08:23:10.6 |
HIP 14504 |
0.79 |
| 2026-05-16 12:00 |
03:07:21.10 |
+08:23:26.0 |
HIP 14504 |
0.51 |
| 2026-05-17 00:00 |
03:07:25.01 |
+08:23:41.4 |
HIP 14504 |
1.38 |
| 2026-05-17 12:00 |
03:07:28.92 |
+08:23:56.7 |
HIP 14504 |
2.35 |
| 2026-05-18 00:00 |
03:07:32.83 |
+08:24:11.8 |
HIP 14504 |
3.34 |
| 2026-05-18 12:00 |
03:07:36.73 |
+08:24:26.9 |
HIP 14504 |
4.33 |
| 2026-05-19 00:00 |
03:07:40.63 |
+08:24:41.8 |
HIP 14504 |
5.33 |
| 2026-05-19 12:00 |
03:07:44.52 |
+08:24:56.6 |
HIP 14504 |
6.32 |
| 2026-05-20 00:00 |
03:07:48.41 |
+08:25:11.3 |
HIP 14504 |
7.31 |
| 2026-05-20 12:00 |
03:07:52.29 |
+08:25:25.9 |
HIP 14504 |
8.30 |
| 2026-05-21 00:00 |
03:07:56.17 |
+08:25:40.3 |
HIP 14504 |
9.29 |
| 2026-05-21 12:00 |
03:08:00.04 |
+08:25:54.7 |
HIP 14607 |
9.87 |
| 2026-05-22 00:00 |
03:08:03.90 |
+08:26:08.9 |
HIP 14607 |
8.88 |
| 2026-05-22 12:00 |
03:08:07.76 |
+08:26:23.0 |
HIP 14607 |
7.90 |
| 2026-05-23 00:00 |
03:08:11.61 |
+08:26:37.0 |
HIP 14607 |
6.92 |
| 2026-05-23 12:00 |
03:08:15.45 |
+08:26:50.9 |
HIP 14607 |
5.94 |
| 2026-05-24 00:00 |
03:08:19.29 |
+08:27:04.7 |
HIP 14607 |
4.96 |
| 2026-05-24 12:00 |
03:08:23.12 |
+08:27:18.3 |
HIP 14607 |
3.99 |
| 2026-05-25 00:00 |
03:08:26.94 |
+08:27:31.8 |
HIP 14607 |
3.02 |
| 2026-05-25 12:00 |
03:08:30.75 |
+08:27:45.2 |
HIP 14607 |
2.05 |
| 2026-05-26 00:00 |
03:08:34.55 |
+08:27:58.4 |
HIP 14607 |
1.09 |
| 2026-05-26 12:00 |
03:08:38.35 |
+08:28:11.6 |
HIP 14607 |
0.13 |
| 2026-05-27 00:00 |
03:08:42.13 |
+08:28:24.6 |
HIP 14607 |
0.84 |
| 2026-05-27 12:00 |
03:08:45.91 |
+08:28:37.5 |
HIP 14607 |
1.80 |
| 2026-05-28 00:00 |
03:08:49.68 |
+08:28:50.2 |
HIP 14607 |
2.75 |
| 2026-05-28 12:00 |
03:08:53.43 |
+08:29:02.8 |
HIP 14607 |
3.71 |
| 2026-05-29 00:00 |
03:08:57.18 |
+08:29:15.3 |
HIP 14607 |
4.66 |
| 2026-05-29 12:00 |
03:09:00.92 |
+08:29:27.7 |
HIP 14607 |
5.60 |
| 2026-05-30 00:00 |
03:09:04.64 |
+08:29:39.9 |
HIP 14607 |
6.55 |
| 2026-05-30 12:00 |
03:09:08.36 |
+08:29:52.0 |
HIP 14607 |
7.49 |
| 2026-05-31 00:00 |
03:09:12.06 |
+08:30:04.0 |
HIP 14607 |
8.42 |
| 2026-05-31 12:00 |
03:09:15.76 |
+08:30:15.8 |
HIP 14607 |
9.36 |
| 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 |