メタデータ
| 項目 |
値 |
| Designation |
306P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-01-30T00:58:11.510400Z |
| Orbit solution date (soln_date, UTC) |
2025-12-02T15:12:53Z |
| Obs used |
406 |
| NEO |
Yes |
| M1 |
19.600 |
| 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) |
2008-10-05.0000000 |
| e |
0.59853445 |
| q (au) |
1.246686 |
| a (au) |
3.105339 |
| i (deg) |
8.365199 |
| Ω (om, deg) |
341.493020 |
| ω (w, deg) |
0.694801 |
| M (ma, deg) |
338.919716 |
等級
散乱 + 全体線形
$$
M_a = (20.000 + 2.741\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
20.000 |
| n |
2.741 |
| gf |
1.000 |
| gb |
-0.581 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
04:50:06.09 |
+29:37:47.9 |
HIP 22402 |
11.44 |
| 2026-03-26 12:00 |
04:50:53.38 |
+29:37:46.8 |
HIP 22571 |
14.24 |
| 2026-03-27 00:00 |
04:51:40.71 |
+29:37:45.4 |
HIP 22571 |
12.47 |
| 2026-03-27 12:00 |
04:52:28.09 |
+29:37:43.8 |
HIP 22727 |
12.22 |
| 2026-03-28 00:00 |
04:53:15.51 |
+29:37:41.9 |
HIP 22727 |
3.82 |
| 2026-03-28 12:00 |
04:54:02.98 |
+29:37:39.7 |
HIP 22727 |
9.62 |
| 2026-03-29 00:00 |
04:54:50.48 |
+29:37:37.3 |
HIP 22727 |
19.59 |
| 2026-03-29 12:00 |
04:55:38.02 |
+29:37:34.6 |
HIP 22964 |
24.73 |
| 2026-03-30 00:00 |
04:56:25.60 |
+29:37:31.6 |
HIP 23048 |
15.43 |
| 2026-03-30 12:00 |
04:57:13.22 |
+29:37:28.2 |
HIP 23048 |
6.42 |
| 2026-03-31 00:00 |
04:58:00.87 |
+29:37:24.6 |
HIP 23048 |
7.66 |
| 2026-03-31 12:00 |
04:58:48.56 |
+29:37:20.6 |
HIP 23143 |
13.29 |
| 2026-04-01 00:00 |
04:59:36.28 |
+29:37:16.4 |
HIP 23291 |
15.90 |
| 2026-04-01 12:00 |
05:00:24.04 |
+29:37:11.8 |
HIP 23291 |
9.25 |
| 2026-04-02 00:00 |
05:01:11.83 |
+29:37:06.8 |
HIP 23291 |
11.59 |
| 2026-04-02 12:00 |
05:01:59.65 |
+29:37:01.5 |
HIP 23291 |
19.98 |
| 2026-04-03 00:00 |
05:02:47.51 |
+29:36:55.9 |
HIP 23598 |
21.55 |
| 2026-04-03 12:00 |
05:03:35.39 |
+29:36:49.9 |
HIP 23598 |
11.16 |
| 2026-04-04 00:00 |
05:04:23.31 |
+29:36:43.6 |
HIP 23598 |
1.27 |
| 2026-04-04 12:00 |
05:05:11.26 |
+29:36:36.8 |
HIP 23598 |
9.78 |
| 2026-04-05 00:00 |
05:05:59.23 |
+29:36:29.7 |
HIP 23744 |
9.86 |
| 2026-04-05 12:00 |
05:06:47.23 |
+29:36:22.3 |
HIP 23744 |
12.10 |
| 2026-04-06 00:00 |
05:07:35.26 |
+29:36:14.4 |
HIP 23744 |
20.33 |
| 2026-04-06 12:00 |
05:08:23.32 |
+29:36:06.1 |
HIP 24005 |
19.94 |
| 2026-04-07 00:00 |
05:09:11.41 |
+29:35:57.5 |
HIP 24005 |
12.93 |
| 2026-04-07 12:00 |
05:09:59.52 |
+29:35:48.4 |
HIP 24005 |
12.45 |
| 2026-04-08 00:00 |
05:10:47.65 |
+29:35:39.0 |
HIP 24160 |
10.50 |
| 2026-04-08 12:00 |
05:11:35.81 |
+29:35:29.1 |
HIP 24160 |
9.16 |
| 2026-04-09 00:00 |
05:12:24.00 |
+29:35:18.8 |
HIP 24160 |
16.63 |
| 2026-04-09 12:00 |
05:13:12.21 |
+29:35:08.1 |
HIP 24160 |
26.25 |
| 2026-04-10 00:00 |
05:14:00.44 |
+29:34:56.9 |
HIP 24571 |
32.34 |
| 2026-04-10 12:00 |
05:14:48.69 |
+29:34:45.3 |
HIP 24571 |
23.11 |
| 2026-04-11 00:00 |
05:15:36.96 |
+29:34:33.3 |
HIP 24571 |
15.58 |
| 2026-04-11 12:00 |
05:16:25.26 |
+29:34:20.8 |
HIP 24571 |
13.13 |
| 2026-04-12 00:00 |
05:17:13.58 |
+29:34:07.9 |
HIP 24571 |
17.97 |
| 2026-04-12 12:00 |
05:18:01.91 |
+29:33:54.5 |
HIP 24571 |
26.36 |
| 2026-04-13 00:00 |
05:18:50.27 |
+29:33:40.7 |
HIP 25001 |
30.97 |
| 2026-04-13 12:00 |
05:19:38.64 |
+29:33:26.4 |
HIP 25001 |
20.46 |
| 2026-04-14 00:00 |
05:20:27.03 |
+29:33:11.6 |
HIP 25001 |
9.98 |
| 2026-04-14 12:00 |
05:21:15.44 |
+29:32:56.4 |
HIP 25001 |
1.39 |
| 2026-04-15 00:00 |
05:22:03.87 |
+29:32:40.6 |
HIP 25001 |
11.23 |
| 2026-04-15 12:00 |
05:22:52.31 |
+29:32:24.4 |
HIP 25157 |
11.46 |
| 2026-04-16 00:00 |
05:23:40.77 |
+29:32:07.7 |
HIP 25157 |
14.59 |