C/2004 K3 (LINEAR)
メタデータ
| 項目 |
値 |
| Designation |
C/2004 K3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2004-06-30T10:56:55.377600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:41Z |
| Obs used |
81 |
| NEO |
- |
| M1 |
16.900 |
| K1 |
45.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2004-06-11.0000000 |
| e |
0.98101532 |
| q (au) |
1.103356 |
| a (au) |
58.118234 |
| i (deg) |
111.928474 |
| Ω (om, deg) |
275.537408 |
| ω (w, deg) |
60.490968 |
| M (ma, deg) |
359.956719 |
等級
散乱 + 全体線形
$$
M_a = (18.914 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
18.914 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-02-03 00:00 |
05:08:18.13 |
-18:30:20.5 |
HIP 23817 |
20.31 |
| 2026-02-03 12:00 |
05:08:16.25 |
-18:29:58.5 |
HIP 23817 |
19.74 |
| 2026-02-04 00:00 |
05:08:14.40 |
-18:29:36.3 |
HIP 23817 |
19.16 |
| 2026-02-04 12:00 |
05:08:12.57 |
-18:29:13.9 |
HIP 23817 |
18.59 |
| 2026-02-05 00:00 |
05:08:10.77 |
-18:28:51.4 |
HIP 23817 |
18.02 |
| 2026-02-05 12:00 |
05:08:08.99 |
-18:28:28.8 |
HIP 23817 |
17.46 |
| 2026-02-06 00:00 |
05:08:07.23 |
-18:28:05.9 |
HIP 23817 |
16.90 |
| 2026-02-06 12:00 |
05:08:05.50 |
-18:27:42.9 |
HIP 23817 |
16.34 |
| 2026-02-07 00:00 |
05:08:03.79 |
-18:27:19.8 |
HIP 23817 |
15.79 |
| 2026-02-07 12:00 |
05:08:02.11 |
-18:26:56.5 |
HIP 23817 |
15.24 |
| 2026-02-08 00:00 |
05:08:00.46 |
-18:26:33.1 |
HIP 23817 |
14.69 |
| 2026-02-08 12:00 |
05:07:58.83 |
-18:26:09.5 |
HIP 23817 |
14.15 |
| 2026-02-09 00:00 |
05:07:57.22 |
-18:25:45.8 |
HIP 23817 |
13.61 |
| 2026-02-09 12:00 |
05:07:55.64 |
-18:25:21.9 |
HIP 23817 |
13.08 |
| 2026-02-10 00:00 |
05:07:54.09 |
-18:24:57.9 |
HIP 23817 |
12.55 |
| 2026-02-10 12:00 |
05:07:52.56 |
-18:24:33.8 |
HIP 23817 |
12.03 |
| 2026-02-11 00:00 |
05:07:51.06 |
-18:24:09.5 |
HIP 23817 |
11.52 |
| 2026-02-11 12:00 |
05:07:49.58 |
-18:23:45.1 |
HIP 23817 |
11.01 |
| 2026-02-12 00:00 |
05:07:48.13 |
-18:23:20.6 |
HIP 23817 |
10.50 |
| 2026-02-12 12:00 |
05:07:46.71 |
-18:22:55.9 |
HIP 23817 |
10.01 |
| 2026-02-13 00:00 |
05:07:45.31 |
-18:22:31.1 |
HIP 23817 |
9.52 |
| 2026-02-13 12:00 |
05:07:43.94 |
-18:22:06.2 |
HIP 23817 |
9.04 |
| 2026-02-14 00:00 |
05:07:42.60 |
-18:21:41.1 |
HIP 23817 |
8.58 |
| 2026-02-14 12:00 |
05:07:41.28 |
-18:21:15.9 |
HIP 23817 |
8.12 |
| 2026-02-15 00:00 |
05:07:39.99 |
-18:20:50.7 |
HIP 23817 |
7.68 |
| 2026-02-15 12:00 |
05:07:38.72 |
-18:20:25.3 |
HIP 23817 |
7.26 |
| 2026-02-16 00:00 |
05:07:37.49 |
-18:19:59.7 |
HIP 23817 |
6.85 |
| 2026-02-16 12:00 |
05:07:36.28 |
-18:19:34.1 |
HIP 23817 |
6.47 |
| 2026-02-17 00:00 |
05:07:35.09 |
-18:19:08.4 |
HIP 23817 |
6.11 |
| 2026-02-17 12:00 |
05:07:33.93 |
-18:18:42.5 |
HIP 23817 |
5.78 |
| 2026-02-18 00:00 |
05:07:32.81 |
-18:18:16.6 |
HIP 23817 |
5.48 |
| 2026-02-18 12:00 |
05:07:31.70 |
-18:17:50.5 |
HIP 23817 |
5.23 |
| 2026-02-19 00:00 |
05:07:30.63 |
-18:17:24.4 |
HIP 23817 |
5.02 |
| 2026-02-19 12:00 |
05:07:29.58 |
-18:16:58.1 |
HIP 23817 |
4.86 |
| 2026-02-20 00:00 |
05:07:28.56 |
-18:16:31.8 |
HIP 23817 |
4.75 |
| 2026-02-20 12:00 |
05:07:27.57 |
-18:16:05.4 |
HIP 23817 |
4.70 |
| 2026-02-21 00:00 |
05:07:26.60 |
-18:15:38.8 |
HIP 23817 |
4.72 |
| 2026-02-21 12:00 |
05:07:25.66 |
-18:15:12.2 |
HIP 23817 |
4.79 |
| 2026-02-22 00:00 |
05:07:24.75 |
-18:14:45.5 |
HIP 23817 |
4.91 |
| 2026-02-22 12:00 |
05:07:23.87 |
-18:14:18.8 |
HIP 23817 |
5.09 |
| 2026-02-23 00:00 |
05:07:23.01 |
-18:13:51.9 |
HIP 23817 |
5.31 |
| 2026-02-23 12:00 |
05:07:22.19 |
-18:13:25.0 |
HIP 23817 |
5.57 |
| 2026-02-24 00:00 |
05:07:21.39 |
-18:12:58.0 |
HIP 23817 |
5.86 |