メタデータ
| 項目 |
値 |
| Designation |
234P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-12-22T16:26:47.500800Z |
| Orbit solution date (soln_date, UTC) |
2025-07-07T14:12:30Z |
| Obs used |
377 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
22.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-04-28.0000000 |
| e |
0.25077789 |
| q (au) |
2.858038 |
| a (au) |
3.814674 |
| i (deg) |
11.516795 |
| Ω (om, deg) |
179.719928 |
| ω (w, deg) |
358.128979 |
| M (ma, deg) |
113.411811 |
等級
散乱 + 全体線形
$$
M_a = (13.435 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.435 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.675 |
| 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 |
19:43:59.95 |
-08:00:00.0 |
HIP 97016 |
23.17 |
| 2026-05-12 12:00 |
19:44:00.59 |
-07:58:34.3 |
HIP 97016 |
24.41 |
| 2026-05-13 00:00 |
19:44:00.96 |
-07:57:09.5 |
HIP 97016 |
25.63 |
| 2026-05-13 12:00 |
19:44:01.07 |
-07:55:45.6 |
HIP 97016 |
26.81 |
| 2026-05-14 00:00 |
19:44:00.92 |
-07:54:22.6 |
HIP 97016 |
27.97 |
| 2026-05-14 12:00 |
19:44:00.50 |
-07:53:00.5 |
HIP 97016 |
29.11 |
| 2026-05-15 00:00 |
19:43:59.82 |
-07:51:39.3 |
HIP 97016 |
30.22 |
| 2026-05-15 12:00 |
19:43:58.87 |
-07:50:19.0 |
HIP 97016 |
31.31 |
| 2026-05-16 00:00 |
19:43:57.66 |
-07:48:59.7 |
HIP 97016 |
32.37 |
| 2026-05-16 12:00 |
19:43:56.18 |
-07:47:41.3 |
HIP 97256 |
32.59 |
| 2026-05-17 00:00 |
19:43:54.44 |
-07:46:23.9 |
HIP 97256 |
32.52 |
| 2026-05-17 12:00 |
19:43:52.43 |
-07:45:07.5 |
HIP 97256 |
32.58 |
| 2026-05-18 00:00 |
19:43:50.17 |
-07:43:52.0 |
HIP 97256 |
32.76 |
| 2026-05-18 12:00 |
19:43:47.64 |
-07:42:37.5 |
HIP 97256 |
33.07 |
| 2026-05-19 00:00 |
19:43:44.84 |
-07:41:24.1 |
HIP 97256 |
33.50 |
| 2026-05-19 12:00 |
19:43:41.79 |
-07:40:11.7 |
HIP 97256 |
34.04 |
| 2026-05-20 00:00 |
19:43:38.47 |
-07:39:00.3 |
HIP 97256 |
34.71 |
| 2026-05-20 12:00 |
19:43:34.90 |
-07:37:49.9 |
HIP 97256 |
35.49 |
| 2026-05-21 00:00 |
19:43:31.06 |
-07:36:40.6 |
HIP 97256 |
36.37 |
| 2026-05-21 12:00 |
19:43:26.97 |
-07:35:32.3 |
HIP 97256 |
37.36 |
| 2026-05-22 00:00 |
19:43:22.61 |
-07:34:25.1 |
HIP 97256 |
38.45 |
| 2026-05-22 12:00 |
19:43:18.00 |
-07:33:19.0 |
HIP 96813 |
37.99 |
| 2026-05-23 00:00 |
19:43:13.13 |
-07:32:13.9 |
HIP 96813 |
36.73 |
| 2026-05-23 12:00 |
19:43:08.01 |
-07:31:10.0 |
HIP 96813 |
35.43 |
| 2026-05-24 00:00 |
19:43:02.63 |
-07:30:07.1 |
HIP 96813 |
34.10 |
| 2026-05-24 12:00 |
19:42:57.00 |
-07:29:05.4 |
HIP 96813 |
32.74 |
| 2026-05-25 00:00 |
19:42:51.11 |
-07:28:04.7 |
HIP 96813 |
31.35 |
| 2026-05-25 12:00 |
19:42:44.97 |
-07:27:05.2 |
HIP 96813 |
29.94 |
| 2026-05-26 00:00 |
19:42:38.57 |
-07:26:06.8 |
HIP 96813 |
28.51 |
| 2026-05-26 12:00 |
19:42:31.93 |
-07:25:09.6 |
HIP 96813 |
27.07 |
| 2026-05-27 00:00 |
19:42:25.04 |
-07:24:13.5 |
HIP 96813 |
25.62 |
| 2026-05-27 12:00 |
19:42:17.90 |
-07:23:18.6 |
HIP 96813 |
24.18 |
| 2026-05-28 00:00 |
19:42:10.51 |
-07:22:24.8 |
HIP 96813 |
22.75 |
| 2026-05-28 12:00 |
19:42:02.87 |
-07:21:32.3 |
HIP 96813 |
21.36 |
| 2026-05-29 00:00 |
19:41:54.98 |
-07:20:40.9 |
HIP 96813 |
20.03 |
| 2026-05-29 12:00 |
19:41:46.86 |
-07:19:50.6 |
HIP 96813 |
18.79 |
| 2026-05-30 00:00 |
19:41:38.48 |
-07:19:01.6 |
HIP 96813 |
17.67 |
| 2026-05-30 12:00 |
19:41:29.87 |
-07:18:13.8 |
HIP 96813 |
16.72 |
| 2026-05-31 00:00 |
19:41:21.01 |
-07:17:27.2 |
HIP 96813 |
15.99 |
| 2026-05-31 12:00 |
19:41:11.91 |
-07:16:41.9 |
HIP 96813 |
15.53 |
| 2026-06-01 00:00 |
19:41:02.58 |
-07:15:57.7 |
HIP 96813 |
15.39 |
| 2026-06-01 12:00 |
19:40:53.00 |
-07:15:14.8 |
HIP 96813 |
15.61 |
| 2026-06-02 00:00 |
19:40:43.19 |
-07:14:33.2 |
HIP 96813 |
16.19 |