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) |
| 2026-03-26 00:00 |
05:07:23.55 |
-17:45:04.5 |
HIP 23816 |
27.33 |
| 2026-03-26 12:00 |
05:07:24.40 |
-17:44:37.1 |
HIP 23816 |
26.91 |
| 2026-03-27 00:00 |
05:07:25.28 |
-17:44:09.8 |
HIP 23816 |
26.49 |
| 2026-03-27 12:00 |
05:07:26.18 |
-17:43:42.5 |
HIP 23816 |
26.07 |
| 2026-03-28 00:00 |
05:07:27.11 |
-17:43:15.3 |
HIP 23816 |
25.66 |
| 2026-03-28 12:00 |
05:07:28.06 |
-17:42:48.2 |
HIP 23816 |
25.26 |
| 2026-03-29 00:00 |
05:07:29.04 |
-17:42:21.2 |
HIP 23816 |
24.86 |
| 2026-03-29 12:00 |
05:07:30.04 |
-17:41:54.2 |
HIP 23816 |
24.47 |
| 2026-03-30 00:00 |
05:07:31.07 |
-17:41:27.3 |
HIP 23816 |
24.08 |
| 2026-03-30 12:00 |
05:07:32.12 |
-17:41:00.5 |
HIP 23816 |
23.71 |
| 2026-03-31 00:00 |
05:07:33.20 |
-17:40:33.8 |
HIP 23816 |
23.34 |
| 2026-03-31 12:00 |
05:07:34.30 |
-17:40:07.1 |
HIP 23862 |
22.89 |
| 2026-04-01 00:00 |
05:07:35.42 |
-17:39:40.5 |
HIP 23862 |
22.42 |
| 2026-04-01 12:00 |
05:07:36.57 |
-17:39:14.0 |
HIP 23862 |
21.96 |
| 2026-04-02 00:00 |
05:07:37.74 |
-17:38:47.6 |
HIP 23862 |
21.51 |
| 2026-04-02 12:00 |
05:07:38.94 |
-17:38:21.3 |
HIP 23862 |
21.06 |
| 2026-04-03 00:00 |
05:07:40.16 |
-17:37:55.1 |
HIP 23862 |
20.61 |
| 2026-04-03 12:00 |
05:07:41.40 |
-17:37:28.9 |
HIP 23862 |
20.17 |
| 2026-04-04 00:00 |
05:07:42.67 |
-17:37:02.8 |
HIP 23862 |
19.73 |
| 2026-04-04 12:00 |
05:07:43.96 |
-17:36:36.9 |
HIP 23862 |
19.31 |
| 2026-04-05 00:00 |
05:07:45.27 |
-17:36:11.0 |
HIP 23862 |
18.88 |
| 2026-04-05 12:00 |
05:07:46.61 |
-17:35:45.2 |
HIP 23862 |
18.47 |
| 2026-04-06 00:00 |
05:07:47.97 |
-17:35:19.6 |
HIP 23862 |
18.06 |
| 2026-04-06 12:00 |
05:07:49.35 |
-17:34:54.0 |
HIP 23862 |
17.67 |
| 2026-04-07 00:00 |
05:07:50.75 |
-17:34:28.5 |
HIP 23862 |
17.28 |
| 2026-04-07 12:00 |
05:07:52.18 |
-17:34:03.2 |
HIP 23862 |
16.90 |
| 2026-04-08 00:00 |
05:07:53.63 |
-17:33:37.9 |
HIP 23862 |
16.54 |
| 2026-04-08 12:00 |
05:07:55.11 |
-17:33:12.7 |
HIP 23862 |
16.19 |
| 2026-04-09 00:00 |
05:07:56.60 |
-17:32:47.7 |
HIP 23862 |
15.85 |
| 2026-04-09 12:00 |
05:07:58.12 |
-17:32:22.8 |
HIP 23931 |
15.35 |
| 2026-04-10 00:00 |
05:07:59.66 |
-17:31:58.0 |
HIP 23931 |
14.80 |
| 2026-04-10 12:00 |
05:08:01.22 |
-17:31:33.3 |
HIP 23931 |
14.25 |
| 2026-04-11 00:00 |
05:08:02.81 |
-17:31:08.7 |
HIP 23931 |
13.70 |
| 2026-04-11 12:00 |
05:08:04.42 |
-17:30:44.2 |
HIP 23931 |
13.15 |
| 2026-04-12 00:00 |
05:08:06.04 |
-17:30:19.8 |
HIP 23931 |
12.60 |
| 2026-04-12 12:00 |
05:08:07.69 |
-17:29:55.6 |
HIP 23931 |
12.05 |
| 2026-04-13 00:00 |
05:08:09.36 |
-17:29:31.5 |
HIP 23931 |
11.50 |
| 2026-04-13 12:00 |
05:08:11.06 |
-17:29:07.5 |
HIP 23931 |
10.95 |
| 2026-04-14 00:00 |
05:08:12.77 |
-17:28:43.7 |
HIP 23931 |
10.40 |
| 2026-04-14 12:00 |
05:08:14.50 |
-17:28:20.0 |
HIP 23931 |
9.85 |
| 2026-04-15 00:00 |
05:08:16.26 |
-17:27:56.4 |
HIP 23931 |
9.31 |
| 2026-04-15 12:00 |
05:08:18.03 |
-17:27:32.9 |
HIP 23931 |
8.77 |
| 2026-04-16 00:00 |
05:08:19.83 |
-17:27:09.6 |
HIP 23931 |
8.23 |