C/2009 K3 (Beshore)
メタデータ
| 項目 |
値 |
| Designation |
C/2009 K3 (Beshore) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-12-16T23:14:58.859520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:31Z |
| Obs used |
20 |
| NEO |
- |
| M1 |
9.000 |
| K1 |
10.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2009-05-27.0000000 |
| e |
1.00000000 |
| q (au) |
2.869026 |
| a (au) |
- |
| i (deg) |
144.420909 |
| Ω (om, deg) |
0.729520 |
| ω (w, deg) |
268.400721 |
| M (ma, deg) |
- |
等級
散乱 + 全体線形
$$
M_a = (4.130 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.130 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.811 |
| 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) |
| 2026-02-03 00:00 |
20:32:26.22 |
+09:11:20.6 |
HIP 101321 |
20.84 |
| 2026-02-03 12:00 |
20:32:29.51 |
+09:11:36.6 |
HIP 101321 |
21.27 |
| 2026-02-04 00:00 |
20:32:32.80 |
+09:11:52.9 |
HIP 101321 |
21.72 |
| 2026-02-04 12:00 |
20:32:36.09 |
+09:12:09.3 |
HIP 101321 |
22.20 |
| 2026-02-05 00:00 |
20:32:39.37 |
+09:12:25.9 |
HIP 101321 |
22.71 |
| 2026-02-05 12:00 |
20:32:42.64 |
+09:12:42.8 |
HIP 101321 |
23.24 |
| 2026-02-06 00:00 |
20:32:45.91 |
+09:12:59.8 |
HIP 101321 |
23.79 |
| 2026-02-06 12:00 |
20:32:49.17 |
+09:13:17.0 |
HIP 101321 |
24.36 |
| 2026-02-07 00:00 |
20:32:52.42 |
+09:13:34.5 |
HIP 101321 |
24.95 |
| 2026-02-07 12:00 |
20:32:55.67 |
+09:13:52.1 |
HIP 101321 |
25.56 |
| 2026-02-08 00:00 |
20:32:58.92 |
+09:14:09.9 |
HIP 101321 |
26.18 |
| 2026-02-08 12:00 |
20:33:02.15 |
+09:14:28.0 |
HIP 101321 |
26.82 |
| 2026-02-09 00:00 |
20:33:05.38 |
+09:14:46.2 |
HIP 101321 |
27.47 |
| 2026-02-09 12:00 |
20:33:08.60 |
+09:15:04.6 |
HIP 101321 |
28.14 |
| 2026-02-10 00:00 |
20:33:11.81 |
+09:15:23.2 |
HIP 101321 |
28.81 |
| 2026-02-10 12:00 |
20:33:15.01 |
+09:15:41.9 |
HIP 101321 |
29.50 |
| 2026-02-11 00:00 |
20:33:18.21 |
+09:16:00.9 |
HIP 101321 |
30.19 |
| 2026-02-11 12:00 |
20:33:21.40 |
+09:16:20.1 |
HIP 101321 |
30.90 |
| 2026-02-12 00:00 |
20:33:24.58 |
+09:16:39.4 |
HIP 101321 |
31.61 |
| 2026-02-12 12:00 |
20:33:27.74 |
+09:16:58.9 |
HIP 101321 |
32.33 |
| 2026-02-13 00:00 |
20:33:30.90 |
+09:17:18.6 |
HIP 101392 |
32.25 |
| 2026-02-13 12:00 |
20:33:34.05 |
+09:17:38.5 |
HIP 101392 |
32.16 |
| 2026-02-14 00:00 |
20:33:37.20 |
+09:17:58.6 |
HIP 101392 |
32.09 |
| 2026-02-14 12:00 |
20:33:40.33 |
+09:18:18.8 |
HIP 101392 |
32.04 |
| 2026-02-15 00:00 |
20:33:43.45 |
+09:18:39.3 |
HIP 101392 |
32.01 |
| 2026-02-15 12:00 |
20:33:46.55 |
+09:18:59.9 |
HIP 101392 |
31.99 |
| 2026-02-16 00:00 |
20:33:49.65 |
+09:19:20.6 |
HIP 101392 |
31.99 |
| 2026-02-16 12:00 |
20:33:52.74 |
+09:19:41.6 |
HIP 101392 |
32.02 |
| 2026-02-17 00:00 |
20:33:55.82 |
+09:20:02.7 |
HIP 101392 |
32.06 |
| 2026-02-17 12:00 |
20:33:58.88 |
+09:20:24.0 |
HIP 101392 |
32.11 |
| 2026-02-18 00:00 |
20:34:01.93 |
+09:20:45.4 |
HIP 101392 |
32.19 |
| 2026-02-18 12:00 |
20:34:04.97 |
+09:21:07.0 |
HIP 101392 |
32.28 |
| 2026-02-19 00:00 |
20:34:08.00 |
+09:21:28.8 |
HIP 101392 |
32.39 |
| 2026-02-19 12:00 |
20:34:11.02 |
+09:21:50.8 |
HIP 101392 |
32.52 |
| 2026-02-20 00:00 |
20:34:14.02 |
+09:22:12.9 |
HIP 101392 |
32.66 |
| 2026-02-20 12:00 |
20:34:17.01 |
+09:22:35.1 |
HIP 101392 |
32.82 |
| 2026-02-21 00:00 |
20:34:19.98 |
+09:22:57.6 |
HIP 101392 |
32.99 |
| 2026-02-21 12:00 |
20:34:22.95 |
+09:23:20.1 |
HIP 101392 |
33.18 |
| 2026-02-22 00:00 |
20:34:25.89 |
+09:23:42.9 |
HIP 101392 |
33.39 |
| 2026-02-22 12:00 |
20:34:28.83 |
+09:24:05.8 |
HIP 101392 |
33.61 |
| 2026-02-23 00:00 |
20:34:31.75 |
+09:24:28.8 |
HIP 101392 |
33.84 |
| 2026-02-23 12:00 |
20:34:34.65 |
+09:24:52.0 |
HIP 101392 |
34.09 |
| 2026-02-24 00:00 |
20:34:37.54 |
+09:25:15.3 |
HIP 101392 |
34.35 |