メタデータ
| 項目 |
値 |
| Designation |
C/2000 K1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-12-14T12:17:47.273280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:04Z |
| Obs used |
304 |
| NEO |
- |
| M1 |
6.200 |
| K1 |
8.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2000-09-03.0000000 |
| e |
1.00229832 |
| q (au) |
6.275829 |
| a (au) |
-2730.610936 |
| i (deg) |
116.789203 |
| Ω (om, deg) |
260.198200 |
| ω (w, deg) |
15.791006 |
| M (ma, deg) |
0.001820 |
等級
散乱 + 全体線形
$$
M_a = (0.447 + 5.589\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
0.447 |
| n |
5.589 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-07-29 00:00 |
06:24:24.84 |
+47:52:52.1 |
HIP 30449 |
11.13 |
| 2026-07-29 12:00 |
06:24:27.95 |
+47:52:56.4 |
HIP 30449 |
11.39 |
| 2026-07-30 00:00 |
06:24:31.05 |
+47:53:00.9 |
HIP 30449 |
11.66 |
| 2026-07-30 12:00 |
06:24:34.13 |
+47:53:05.4 |
HIP 30449 |
11.95 |
| 2026-07-31 00:00 |
06:24:37.19 |
+47:53:10.1 |
HIP 30449 |
12.26 |
| 2026-07-31 12:00 |
06:24:40.24 |
+47:53:14.9 |
HIP 30449 |
12.58 |
| 2026-08-01 00:00 |
06:24:43.27 |
+47:53:19.8 |
HIP 30449 |
12.91 |
| 2026-08-01 12:00 |
06:24:46.28 |
+47:53:24.8 |
HIP 30449 |
13.26 |
| 2026-08-02 00:00 |
06:24:49.28 |
+47:53:29.9 |
HIP 30449 |
13.61 |
| 2026-08-02 12:00 |
06:24:52.26 |
+47:53:35.1 |
HIP 30449 |
13.98 |
| 2026-08-03 00:00 |
06:24:55.22 |
+47:53:40.5 |
HIP 30449 |
14.35 |
| 2026-08-03 12:00 |
06:24:58.16 |
+47:53:46.0 |
HIP 30449 |
14.74 |
| 2026-08-04 00:00 |
06:25:01.09 |
+47:53:51.6 |
HIP 30449 |
15.12 |
| 2026-08-04 12:00 |
06:25:03.99 |
+47:53:57.3 |
HIP 30449 |
15.52 |
| 2026-08-05 00:00 |
06:25:06.88 |
+47:54:03.1 |
HIP 30449 |
15.91 |
| 2026-08-05 12:00 |
06:25:09.75 |
+47:54:09.0 |
HIP 30449 |
16.32 |
| 2026-08-06 00:00 |
06:25:12.61 |
+47:54:15.0 |
HIP 30449 |
16.72 |
| 2026-08-06 12:00 |
06:25:15.44 |
+47:54:21.2 |
HIP 30449 |
17.13 |
| 2026-08-07 00:00 |
06:25:18.25 |
+47:54:27.4 |
HIP 30449 |
17.55 |
| 2026-08-07 12:00 |
06:25:21.05 |
+47:54:33.8 |
HIP 30449 |
17.96 |
| 2026-08-08 00:00 |
06:25:23.82 |
+47:54:40.3 |
HIP 30449 |
18.38 |
| 2026-08-08 12:00 |
06:25:26.58 |
+47:54:46.9 |
HIP 30449 |
18.80 |
| 2026-08-09 00:00 |
06:25:29.31 |
+47:54:53.6 |
HIP 30449 |
19.22 |
| 2026-08-09 12:00 |
06:25:32.03 |
+47:55:00.4 |
HIP 30449 |
19.64 |
| 2026-08-10 00:00 |
06:25:34.72 |
+47:55:07.4 |
HIP 30449 |
20.06 |
| 2026-08-10 12:00 |
06:25:37.39 |
+47:55:14.4 |
HIP 30449 |
20.48 |
| 2026-08-11 00:00 |
06:25:40.05 |
+47:55:21.6 |
HIP 30449 |
20.91 |
| 2026-08-11 12:00 |
06:25:42.68 |
+47:55:28.8 |
HIP 30449 |
21.33 |
| 2026-08-12 00:00 |
06:25:45.29 |
+47:55:36.2 |
HIP 30449 |
21.75 |
| 2026-08-12 12:00 |
06:25:47.88 |
+47:55:43.6 |
HIP 30768 |
21.70 |
| 2026-08-13 00:00 |
06:25:50.44 |
+47:55:51.2 |
HIP 30768 |
21.25 |
| 2026-08-13 12:00 |
06:25:52.99 |
+47:55:58.9 |
HIP 30768 |
20.81 |
| 2026-08-14 00:00 |
06:25:55.51 |
+47:56:06.7 |
HIP 30768 |
20.37 |
| 2026-08-14 12:00 |
06:25:58.01 |
+47:56:14.6 |
HIP 30768 |
19.94 |
| 2026-08-15 00:00 |
06:26:00.48 |
+47:56:22.6 |
HIP 30768 |
19.51 |
| 2026-08-15 12:00 |
06:26:02.94 |
+47:56:30.7 |
HIP 30768 |
19.08 |
| 2026-08-16 00:00 |
06:26:05.37 |
+47:56:38.9 |
HIP 30768 |
18.66 |
| 2026-08-16 12:00 |
06:26:07.77 |
+47:56:47.2 |
HIP 30768 |
18.24 |
| 2026-08-17 00:00 |
06:26:10.16 |
+47:56:55.6 |
HIP 30768 |
17.83 |
| 2026-08-17 12:00 |
06:26:12.52 |
+47:57:04.1 |
HIP 30768 |
17.42 |
| 2026-08-18 00:00 |
06:26:14.85 |
+47:57:12.7 |
HIP 30768 |
17.01 |
| 2026-08-18 12:00 |
06:26:17.16 |
+47:57:21.4 |
HIP 30768 |
16.61 |
| 2026-08-19 00:00 |
06:26:19.45 |
+47:57:30.2 |
HIP 30768 |
16.21 |