メタデータ
| 項目 |
値 |
| Designation |
C/1999 K5 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-07-04T09:14:43.310400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:00Z |
| Obs used |
239 |
| NEO |
- |
| M1 |
6.100 |
| K1 |
10.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2000-03-16.0000000 |
| e |
1.00176295 |
| q (au) |
3.255394 |
| a (au) |
-1846.560639 |
| i (deg) |
89.471269 |
| Ω (om, deg) |
106.379754 |
| ω (w, deg) |
241.485412 |
| M (ma, deg) |
-0.001371 |
等級
散乱 + 全体線形
$$
M_a = (3.963 + 5.981\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
3.963 |
| n |
5.981 |
| gf |
1.000 |
| gb |
-0.529 |
| 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 |
07:28:51.36 |
+52:41:36.4 |
HIP 36248 |
21.67 |
| 2026-05-12 12:00 |
07:28:53.46 |
+52:41:19.3 |
HIP 36248 |
21.55 |
| 2026-05-13 00:00 |
07:28:55.59 |
+52:41:02.2 |
HIP 36248 |
21.44 |
| 2026-05-13 12:00 |
07:28:57.74 |
+52:40:45.2 |
HIP 36248 |
21.35 |
| 2026-05-14 00:00 |
07:28:59.93 |
+52:40:28.3 |
HIP 36248 |
21.27 |
| 2026-05-14 12:00 |
07:29:02.15 |
+52:40:11.4 |
HIP 36248 |
21.19 |
| 2026-05-15 00:00 |
07:29:04.39 |
+52:39:54.6 |
HIP 36248 |
21.14 |
| 2026-05-15 12:00 |
07:29:06.66 |
+52:39:37.8 |
HIP 36248 |
21.09 |
| 2026-05-16 00:00 |
07:29:08.96 |
+52:39:21.1 |
HIP 36248 |
21.05 |
| 2026-05-16 12:00 |
07:29:11.29 |
+52:39:04.5 |
HIP 36584 |
20.86 |
| 2026-05-17 00:00 |
07:29:13.64 |
+52:38:47.9 |
HIP 36584 |
20.49 |
| 2026-05-17 12:00 |
07:29:16.02 |
+52:38:31.4 |
HIP 36584 |
20.13 |
| 2026-05-18 00:00 |
07:29:18.43 |
+52:38:14.9 |
HIP 36584 |
19.76 |
| 2026-05-18 12:00 |
07:29:20.87 |
+52:37:58.5 |
HIP 36584 |
19.39 |
| 2026-05-19 00:00 |
07:29:23.33 |
+52:37:42.2 |
HIP 36584 |
19.02 |
| 2026-05-19 12:00 |
07:29:25.82 |
+52:37:26.0 |
HIP 36584 |
18.65 |
| 2026-05-20 00:00 |
07:29:28.34 |
+52:37:09.8 |
HIP 36584 |
18.29 |
| 2026-05-20 12:00 |
07:29:30.88 |
+52:36:53.7 |
HIP 36584 |
17.92 |
| 2026-05-21 00:00 |
07:29:33.45 |
+52:36:37.6 |
HIP 36584 |
17.55 |
| 2026-05-21 12:00 |
07:29:36.04 |
+52:36:21.6 |
HIP 36584 |
17.19 |
| 2026-05-22 00:00 |
07:29:38.66 |
+52:36:05.7 |
HIP 36584 |
16.82 |
| 2026-05-22 12:00 |
07:29:41.31 |
+52:35:49.9 |
HIP 36584 |
16.46 |
| 2026-05-23 00:00 |
07:29:43.98 |
+52:35:34.2 |
HIP 36584 |
16.10 |
| 2026-05-23 12:00 |
07:29:46.67 |
+52:35:18.5 |
HIP 36584 |
15.74 |
| 2026-05-24 00:00 |
07:29:49.39 |
+52:35:02.9 |
HIP 36584 |
15.39 |
| 2026-05-24 12:00 |
07:29:52.13 |
+52:34:47.4 |
HIP 36584 |
15.03 |
| 2026-05-25 00:00 |
07:29:54.90 |
+52:34:32.0 |
HIP 36584 |
14.69 |
| 2026-05-25 12:00 |
07:29:57.69 |
+52:34:16.6 |
HIP 36584 |
14.34 |
| 2026-05-26 00:00 |
07:30:00.50 |
+52:34:01.3 |
HIP 36584 |
14.01 |
| 2026-05-26 12:00 |
07:30:03.34 |
+52:33:46.1 |
HIP 36584 |
13.67 |
| 2026-05-27 00:00 |
07:30:06.20 |
+52:33:31.0 |
HIP 36584 |
13.35 |
| 2026-05-27 12:00 |
07:30:09.08 |
+52:33:16.0 |
HIP 36584 |
13.03 |
| 2026-05-28 00:00 |
07:30:11.99 |
+52:33:01.1 |
HIP 36584 |
12.72 |
| 2026-05-28 12:00 |
07:30:14.92 |
+52:32:46.2 |
HIP 36584 |
12.42 |
| 2026-05-29 00:00 |
07:30:17.87 |
+52:32:31.5 |
HIP 36584 |
12.13 |
| 2026-05-29 12:00 |
07:30:20.85 |
+52:32:16.8 |
HIP 36584 |
11.85 |
| 2026-05-30 00:00 |
07:30:23.84 |
+52:32:02.2 |
HIP 36584 |
11.59 |
| 2026-05-30 12:00 |
07:30:26.86 |
+52:31:47.7 |
HIP 36584 |
11.33 |
| 2026-05-31 00:00 |
07:30:29.90 |
+52:31:33.3 |
HIP 36584 |
11.09 |
| 2026-05-31 12:00 |
07:30:32.96 |
+52:31:19.0 |
HIP 36584 |
10.87 |
| 2026-06-01 00:00 |
07:30:36.04 |
+52:31:04.8 |
HIP 36584 |
10.67 |
| 2026-06-01 12:00 |
07:30:39.15 |
+52:30:50.7 |
HIP 36584 |
10.48 |
| 2026-06-02 00:00 |
07:30:42.27 |
+52:30:36.6 |
HIP 36584 |
10.32 |