メタデータ
| 項目 |
値 |
| Designation |
C/1999 K6 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-07-24T16:11:00.306240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:00Z |
| Obs used |
320 |
| NEO |
- |
| M1 |
14.000 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1999-08-05.0000000 |
| e |
0.99352053 |
| q (au) |
2.246977 |
| a (au) |
346.784195 |
| i (deg) |
46.343845 |
| Ω (om, deg) |
245.372062 |
| ω (w, deg) |
56.763680 |
| M (ma, deg) |
0.001729 |
等級
散乱 + 全体線形
$$
M_a = (13.035 + 5.053\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.035 |
| n |
5.053 |
| 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) |
| 2026-07-29 00:00 |
06:00:10.90 |
+00:47:16.0 |
HIP 28296 |
24.73 |
| 2026-07-29 12:00 |
06:00:12.91 |
+00:47:06.7 |
HIP 28296 |
25.06 |
| 2026-07-30 00:00 |
06:00:14.92 |
+00:46:57.3 |
HIP 28296 |
25.39 |
| 2026-07-30 12:00 |
06:00:16.91 |
+00:46:47.8 |
HIP 28296 |
25.73 |
| 2026-07-31 00:00 |
06:00:18.89 |
+00:46:38.2 |
HIP 28296 |
26.07 |
| 2026-07-31 12:00 |
06:00:20.86 |
+00:46:28.5 |
HIP 28296 |
26.41 |
| 2026-08-01 00:00 |
06:00:22.81 |
+00:46:18.7 |
HIP 28296 |
26.75 |
| 2026-08-01 12:00 |
06:00:24.75 |
+00:46:08.9 |
HIP 28296 |
27.10 |
| 2026-08-02 00:00 |
06:00:26.69 |
+00:45:58.9 |
HIP 28296 |
27.44 |
| 2026-08-02 12:00 |
06:00:28.60 |
+00:45:48.9 |
HIP 28296 |
27.79 |
| 2026-08-03 00:00 |
06:00:30.51 |
+00:45:38.7 |
HIP 28296 |
28.14 |
| 2026-08-03 12:00 |
06:00:32.40 |
+00:45:28.5 |
HIP 28296 |
28.49 |
| 2026-08-04 00:00 |
06:00:34.28 |
+00:45:18.2 |
HIP 28296 |
28.85 |
| 2026-08-04 12:00 |
06:00:36.15 |
+00:45:07.8 |
HIP 28296 |
29.20 |
| 2026-08-05 00:00 |
06:00:38.01 |
+00:44:57.3 |
HIP 28296 |
29.55 |
| 2026-08-05 12:00 |
06:00:39.85 |
+00:44:46.7 |
HIP 28296 |
29.91 |
| 2026-08-06 00:00 |
06:00:41.67 |
+00:44:36.0 |
HIP 28296 |
30.26 |
| 2026-08-06 12:00 |
06:00:43.49 |
+00:44:25.2 |
HIP 28296 |
30.61 |
| 2026-08-07 00:00 |
06:00:45.29 |
+00:44:14.3 |
HIP 28296 |
30.97 |
| 2026-08-07 12:00 |
06:00:47.08 |
+00:44:03.4 |
HIP 28296 |
31.32 |
| 2026-08-08 00:00 |
06:00:48.85 |
+00:43:52.4 |
HIP 28296 |
31.67 |
| 2026-08-08 12:00 |
06:00:50.61 |
+00:43:41.2 |
HIP 28613 |
31.58 |
| 2026-08-09 00:00 |
06:00:52.35 |
+00:43:30.0 |
HIP 28613 |
31.40 |
| 2026-08-09 12:00 |
06:00:54.08 |
+00:43:18.8 |
HIP 28613 |
31.22 |
| 2026-08-10 00:00 |
06:00:55.80 |
+00:43:07.4 |
HIP 28613 |
31.05 |
| 2026-08-10 12:00 |
06:00:57.50 |
+00:42:55.9 |
HIP 28613 |
30.90 |
| 2026-08-11 00:00 |
06:00:59.18 |
+00:42:44.4 |
HIP 28613 |
30.75 |
| 2026-08-11 12:00 |
06:01:00.85 |
+00:42:32.8 |
HIP 28613 |
30.61 |
| 2026-08-12 00:00 |
06:01:02.51 |
+00:42:21.1 |
HIP 28613 |
30.48 |
| 2026-08-12 12:00 |
06:01:04.15 |
+00:42:09.3 |
HIP 28613 |
30.37 |
| 2026-08-13 00:00 |
06:01:05.78 |
+00:41:57.4 |
HIP 28613 |
30.26 |
| 2026-08-13 12:00 |
06:01:07.39 |
+00:41:45.5 |
HIP 28613 |
30.16 |
| 2026-08-14 00:00 |
06:01:08.98 |
+00:41:33.4 |
HIP 28613 |
30.07 |
| 2026-08-14 12:00 |
06:01:10.56 |
+00:41:21.3 |
HIP 28613 |
29.99 |
| 2026-08-15 00:00 |
06:01:12.12 |
+00:41:09.2 |
HIP 28613 |
29.93 |
| 2026-08-15 12:00 |
06:01:13.67 |
+00:40:56.9 |
HIP 28613 |
29.87 |
| 2026-08-16 00:00 |
06:01:15.20 |
+00:40:44.6 |
HIP 28613 |
29.82 |
| 2026-08-16 12:00 |
06:01:16.71 |
+00:40:32.2 |
HIP 28613 |
29.78 |
| 2026-08-17 00:00 |
06:01:18.21 |
+00:40:19.7 |
HIP 28613 |
29.75 |
| 2026-08-17 12:00 |
06:01:19.70 |
+00:40:07.2 |
HIP 28613 |
29.72 |
| 2026-08-18 00:00 |
06:01:21.16 |
+00:39:54.6 |
HIP 28613 |
29.71 |
| 2026-08-18 12:00 |
06:01:22.61 |
+00:39:41.9 |
HIP 28613 |
29.71 |
| 2026-08-19 00:00 |
06:01:24.05 |
+00:39:29.1 |
HIP 28613 |
29.72 |