C/2004 L2 (LINEAR)
メタデータ
| 項目 |
値 |
| Designation |
C/2004 L2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-11-15T02:27:00.152640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:42Z |
| Obs used |
303 |
| NEO |
- |
| M1 |
8.000 |
| K1 |
9.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2005-11-03.0000000 |
| e |
0.99521643 |
| q (au) |
3.778628 |
| a (au) |
789.918609 |
| i (deg) |
62.518634 |
| Ω (om, deg) |
99.180087 |
| ω (w, deg) |
257.311401 |
| M (ma, deg) |
359.999463 |
等級
散乱 + 全体線形
$$
M_a = (10.395 + 2.060\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.395 |
| n |
2.060 |
| gf |
1.000 |
| gb |
-0.835 |
| 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) |
| 2026-02-03 00:00 |
09:03:02.19 |
+55:05:20.6 |
HIP 44654 |
30.69 |
| 2026-02-03 12:00 |
09:02:57.14 |
+55:05:33.0 |
HIP 44654 |
31.16 |
| 2026-02-04 00:00 |
09:02:52.09 |
+55:05:45.2 |
HIP 44654 |
31.63 |
| 2026-02-04 12:00 |
09:02:47.05 |
+55:05:57.0 |
HIP 44654 |
32.13 |
| 2026-02-05 00:00 |
09:02:42.00 |
+55:06:08.6 |
HIP 44654 |
32.63 |
| 2026-02-05 12:00 |
09:02:36.96 |
+55:06:19.9 |
HIP 44654 |
33.14 |
| 2026-02-06 00:00 |
09:02:31.92 |
+55:06:30.9 |
HIP 44654 |
33.67 |
| 2026-02-06 12:00 |
09:02:26.89 |
+55:06:41.7 |
HIP 44654 |
34.20 |
| 2026-02-07 00:00 |
09:02:21.85 |
+55:06:52.2 |
HIP 44654 |
34.74 |
| 2026-02-07 12:00 |
09:02:16.83 |
+55:07:02.3 |
HIP 44654 |
35.30 |
| 2026-02-08 00:00 |
09:02:11.80 |
+55:07:12.3 |
HIP 44654 |
35.86 |
| 2026-02-08 12:00 |
09:02:06.78 |
+55:07:21.9 |
HIP 44392 |
36.27 |
| 2026-02-09 00:00 |
09:02:01.77 |
+55:07:31.2 |
HIP 44392 |
36.51 |
| 2026-02-09 12:00 |
09:01:56.76 |
+55:07:40.3 |
HIP 44392 |
36.76 |
| 2026-02-10 00:00 |
09:01:51.76 |
+55:07:49.0 |
HIP 44392 |
37.02 |
| 2026-02-10 12:00 |
09:01:46.76 |
+55:07:57.5 |
HIP 44392 |
37.28 |
| 2026-02-11 00:00 |
09:01:41.77 |
+55:08:05.7 |
HIP 44392 |
37.56 |
| 2026-02-11 12:00 |
09:01:36.79 |
+55:08:13.7 |
HIP 44392 |
37.84 |
| 2026-02-12 00:00 |
09:01:31.82 |
+55:08:21.3 |
HIP 44392 |
38.12 |
| 2026-02-12 12:00 |
09:01:26.86 |
+55:08:28.7 |
HIP 44392 |
38.42 |
| 2026-02-13 00:00 |
09:01:21.90 |
+55:08:35.7 |
HIP 43981 |
38.69 |
| 2026-02-13 12:00 |
09:01:16.96 |
+55:08:42.5 |
HIP 43981 |
38.11 |
| 2026-02-14 00:00 |
09:01:12.02 |
+55:08:49.0 |
HIP 43981 |
37.54 |
| 2026-02-14 12:00 |
09:01:07.10 |
+55:08:55.2 |
HIP 43981 |
36.97 |
| 2026-02-15 00:00 |
09:01:02.19 |
+55:09:01.1 |
HIP 43981 |
36.41 |
| 2026-02-15 12:00 |
09:00:57.28 |
+55:09:06.7 |
HIP 43981 |
35.85 |
| 2026-02-16 00:00 |
09:00:52.39 |
+55:09:12.1 |
HIP 43981 |
35.30 |
| 2026-02-16 12:00 |
09:00:47.52 |
+55:09:17.1 |
HIP 43981 |
34.75 |
| 2026-02-17 00:00 |
09:00:42.65 |
+55:09:21.9 |
HIP 43981 |
34.20 |
| 2026-02-17 12:00 |
09:00:37.80 |
+55:09:26.4 |
HIP 43981 |
33.66 |
| 2026-02-18 00:00 |
09:00:32.96 |
+55:09:30.6 |
HIP 43981 |
33.12 |
| 2026-02-18 12:00 |
09:00:28.14 |
+55:09:34.5 |
HIP 43981 |
32.59 |
| 2026-02-19 00:00 |
09:00:23.33 |
+55:09:38.1 |
HIP 43981 |
32.07 |
| 2026-02-19 12:00 |
09:00:18.53 |
+55:09:41.4 |
HIP 43981 |
31.55 |
| 2026-02-20 00:00 |
09:00:13.76 |
+55:09:44.5 |
HIP 43981 |
31.03 |
| 2026-02-20 12:00 |
09:00:08.99 |
+55:09:47.2 |
HIP 43981 |
30.52 |
| 2026-02-21 00:00 |
09:00:04.25 |
+55:09:49.7 |
HIP 43981 |
30.02 |
| 2026-02-21 12:00 |
08:59:59.52 |
+55:09:51.9 |
HIP 43981 |
29.52 |
| 2026-02-22 00:00 |
08:59:54.81 |
+55:09:53.8 |
HIP 43981 |
29.03 |
| 2026-02-22 12:00 |
08:59:50.12 |
+55:09:55.4 |
HIP 43981 |
28.55 |
| 2026-02-23 00:00 |
08:59:45.44 |
+55:09:56.7 |
HIP 43981 |
28.07 |
| 2026-02-23 12:00 |
08:59:40.78 |
+55:09:57.8 |
HIP 43981 |
27.60 |
| 2026-02-24 00:00 |
08:59:36.15 |
+55:09:58.5 |
HIP 43981 |
27.13 |