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) |
| 2026-03-26 00:00 |
19:24:42.89 |
-10:52:21.3 |
HIP 95527 |
17.93 |
| 2026-03-26 12:00 |
19:25:05.46 |
-10:50:22.6 |
HIP 95527 |
12.08 |
| 2026-03-27 00:00 |
19:25:27.83 |
-10:48:23.9 |
HIP 95527 |
6.36 |
| 2026-03-27 12:00 |
19:25:50.01 |
-10:46:25.0 |
HIP 95527 |
1.78 |
| 2026-03-28 00:00 |
19:26:11.99 |
-10:44:26.0 |
HIP 95527 |
5.71 |
| 2026-03-28 12:00 |
19:26:33.78 |
-10:42:27.0 |
HIP 95527 |
11.28 |
| 2026-03-29 00:00 |
19:26:55.37 |
-10:40:27.9 |
HIP 95527 |
16.91 |
| 2026-03-29 12:00 |
19:27:16.77 |
-10:38:28.7 |
HIP 95527 |
22.50 |
| 2026-03-30 00:00 |
19:27:37.97 |
-10:36:29.5 |
HIP 95763 |
21.60 |
| 2026-03-30 12:00 |
19:27:58.97 |
-10:34:30.2 |
HIP 95763 |
16.78 |
| 2026-03-31 00:00 |
19:28:19.78 |
-10:32:30.9 |
HIP 95763 |
12.57 |
| 2026-03-31 12:00 |
19:28:40.38 |
-10:30:31.6 |
HIP 95763 |
9.72 |
| 2026-04-01 00:00 |
19:29:00.79 |
-10:28:32.2 |
HIP 95763 |
9.47 |
| 2026-04-01 12:00 |
19:29:20.99 |
-10:26:32.9 |
HIP 95763 |
11.93 |
| 2026-04-02 00:00 |
19:29:40.99 |
-10:24:33.5 |
HIP 95763 |
15.83 |
| 2026-04-02 12:00 |
19:30:00.78 |
-10:22:34.1 |
HIP 95763 |
20.32 |
| 2026-04-03 00:00 |
19:30:20.38 |
-10:20:34.8 |
HIP 95763 |
25.07 |
| 2026-04-03 12:00 |
19:30:39.76 |
-10:18:35.4 |
HIP 95763 |
29.92 |
| 2026-04-04 00:00 |
19:30:58.94 |
-10:16:36.1 |
HIP 95763 |
34.81 |
| 2026-04-04 12:00 |
19:31:17.92 |
-10:14:36.8 |
HIP 95763 |
39.71 |
| 2026-04-05 00:00 |
19:31:36.68 |
-10:12:37.6 |
HIP 95763 |
44.60 |
| 2026-04-05 12:00 |
19:31:55.23 |
-10:10:38.4 |
HIP 95763 |
49.47 |
| 2026-04-06 00:00 |
19:32:13.58 |
-10:08:39.3 |
HIP 96327 |
49.48 |
| 2026-04-06 12:00 |
19:32:31.71 |
-10:06:40.3 |
HIP 96327 |
46.80 |
| 2026-04-07 00:00 |
19:32:49.63 |
-10:04:41.4 |
HIP 96327 |
44.53 |
| 2026-04-07 12:00 |
19:33:07.34 |
-10:02:42.5 |
HIP 96327 |
42.73 |
| 2026-04-08 00:00 |
19:33:24.83 |
-10:00:43.8 |
HIP 96388 |
41.33 |
| 2026-04-08 12:00 |
19:33:42.10 |
-09:58:45.2 |
HIP 96388 |
38.89 |
| 2026-04-09 00:00 |
19:33:59.16 |
-09:56:46.7 |
HIP 96388 |
36.92 |
| 2026-04-09 12:00 |
19:34:16.00 |
-09:54:48.3 |
HIP 96388 |
35.48 |
| 2026-04-10 00:00 |
19:34:32.62 |
-09:52:50.1 |
HIP 96388 |
34.63 |
| 2026-04-10 12:00 |
19:34:49.02 |
-09:50:52.0 |
HIP 96388 |
34.38 |
| 2026-04-11 00:00 |
19:35:05.20 |
-09:48:54.1 |
HIP 96479 |
33.12 |
| 2026-04-11 12:00 |
19:35:21.15 |
-09:46:56.4 |
HIP 96376 |
30.88 |
| 2026-04-12 00:00 |
19:35:36.89 |
-09:44:58.9 |
HIP 96435 |
28.18 |
| 2026-04-12 12:00 |
19:35:52.40 |
-09:43:01.5 |
HIP 96435 |
24.99 |
| 2026-04-13 00:00 |
19:36:07.68 |
-09:41:04.4 |
HIP 96435 |
22.20 |
| 2026-04-13 12:00 |
19:36:22.73 |
-09:39:07.5 |
HIP 96435 |
19.93 |
| 2026-04-14 00:00 |
19:36:37.56 |
-09:37:10.8 |
HIP 96435 |
18.34 |
| 2026-04-14 12:00 |
19:36:52.16 |
-09:35:14.3 |
HIP 96435 |
17.58 |
| 2026-04-15 00:00 |
19:37:06.53 |
-09:33:18.1 |
HIP 96435 |
17.73 |
| 2026-04-15 12:00 |
19:37:20.66 |
-09:31:22.2 |
HIP 96435 |
18.72 |
| 2026-04-16 00:00 |
19:37:34.57 |
-09:29:26.6 |
HIP 96435 |
20.41 |