メタデータ
| 項目 |
値 |
| Designation |
233P/La Sagra |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-06-25T04:33:06.261120Z |
| Orbit solution date (soln_date, UTC) |
2026-03-12T00:07:19Z |
| Obs used |
182 |
| NEO |
- |
| M1 |
18.800 |
| 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) |
2017-10-24.0000000 |
| e |
0.41123476 |
| q (au) |
1.783842 |
| a (au) |
3.029802 |
| i (deg) |
11.284490 |
| Ω (om, deg) |
74.928161 |
| ω (w, deg) |
27.129771 |
| M (ma, deg) |
159.193599 |
等級
散乱 + 全体線形
$$
M_a = (15.663 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.663 |
| n |
6.000 |
| gf |
0.997 |
| gb |
-0.857 |
| k |
0.999 |
| δ90 |
9.995 |
| 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) |
| 2026-06-01 00:00 |
09:35:50.28 |
+25:24:41.3 |
HIP 47026 |
32.34 |
| 2026-06-01 12:00 |
09:36:50.30 |
+25:18:38.7 |
HIP 47298 |
20.84 |
| 2026-06-02 00:00 |
09:37:50.25 |
+25:12:35.3 |
HIP 47298 |
11.74 |
| 2026-06-02 12:00 |
09:38:50.13 |
+25:06:31.1 |
HIP 47382 |
16.35 |
| 2026-06-03 00:00 |
09:39:49.95 |
+25:00:26.2 |
HIP 47382 |
23.18 |
| 2026-06-03 12:00 |
09:40:49.69 |
+24:54:20.6 |
HIP 47382 |
35.32 |
| 2026-06-04 00:00 |
09:41:49.36 |
+24:48:14.3 |
HIP 47685 |
24.35 |
| 2026-06-04 12:00 |
09:42:48.95 |
+24:42:07.2 |
HIP 47685 |
9.65 |
| 2026-06-05 00:00 |
09:43:48.48 |
+24:35:59.4 |
HIP 47685 |
5.84 |
| 2026-06-05 12:00 |
09:44:47.94 |
+24:29:50.9 |
HIP 47685 |
20.40 |
| 2026-06-06 00:00 |
09:45:47.33 |
+24:23:41.8 |
HIP 47685 |
35.21 |
| 2026-06-06 12:00 |
09:46:46.65 |
+24:17:31.9 |
HIP 48124 |
30.51 |
| 2026-06-07 00:00 |
09:47:45.90 |
+24:11:21.4 |
HIP 48176 |
24.87 |
| 2026-06-07 12:00 |
09:48:45.08 |
+24:05:10.2 |
HIP 48176 |
22.33 |
| 2026-06-08 00:00 |
09:49:44.19 |
+23:58:58.4 |
HIP 48315 |
18.47 |
| 2026-06-08 12:00 |
09:50:43.22 |
+23:52:45.9 |
HIP 48315 |
3.63 |
| 2026-06-09 00:00 |
09:51:42.19 |
+23:46:32.8 |
HIP 48315 |
11.24 |
| 2026-06-09 12:00 |
09:52:41.09 |
+23:40:19.1 |
HIP 48315 |
26.09 |
| 2026-06-10 00:00 |
09:53:39.92 |
+23:34:04.7 |
HIP 48585 |
13.80 |
| 2026-06-10 12:00 |
09:54:38.68 |
+23:27:49.7 |
HIP 48585 |
1.55 |
| 2026-06-11 00:00 |
09:55:37.37 |
+23:21:34.1 |
HIP 48585 |
15.98 |
| 2026-06-11 12:00 |
09:56:35.99 |
+23:15:18.0 |
HIP 48743 |
7.11 |
| 2026-06-12 00:00 |
09:57:34.55 |
+23:09:01.2 |
HIP 48743 |
14.31 |
| 2026-06-12 12:00 |
09:58:33.03 |
+23:02:43.9 |
HIP 48973 |
18.68 |
| 2026-06-13 00:00 |
09:59:31.44 |
+22:56:26.0 |
HIP 48980 |
15.92 |
| 2026-06-13 12:00 |
10:00:29.79 |
+22:50:07.5 |
HIP 49114 |
14.01 |
| 2026-06-14 00:00 |
10:01:28.07 |
+22:43:48.6 |
HIP 49114 |
0.84 |
| 2026-06-14 12:00 |
10:02:26.27 |
+22:37:29.0 |
HIP 49114 |
15.67 |
| 2026-06-15 00:00 |
10:03:24.41 |
+22:31:09.0 |
HIP 49365 |
16.97 |
| 2026-06-15 12:00 |
10:04:22.48 |
+22:24:48.4 |
HIP 49365 |
9.93 |
| 2026-06-16 00:00 |
10:05:20.48 |
+22:18:27.4 |
HIP 49365 |
18.69 |
| 2026-06-16 12:00 |
10:06:18.41 |
+22:12:05.8 |
HIP 49399 |
28.24 |
| 2026-06-17 00:00 |
10:07:16.27 |
+22:05:43.8 |
HIP 49735 |
32.19 |
| 2026-06-17 12:00 |
10:08:14.06 |
+21:59:21.3 |
HIP 49735 |
17.70 |
| 2026-06-18 00:00 |
10:09:11.78 |
+21:52:58.3 |
HIP 49735 |
5.56 |
| 2026-06-18 12:00 |
10:10:09.43 |
+21:46:34.9 |
HIP 49735 |
13.72 |
| 2026-06-19 00:00 |
10:11:07.01 |
+21:40:11.1 |
HIP 49970 |
26.05 |
| 2026-06-19 12:00 |
10:12:04.52 |
+21:33:46.8 |
HIP 49970 |
15.87 |
| 2026-06-20 00:00 |
10:13:01.95 |
+21:27:22.2 |
HIP 50056 |
3.18 |
| 2026-06-20 12:00 |
10:13:59.32 |
+21:20:57.1 |
HIP 50056 |
11.82 |
| 2026-06-21 00:00 |
10:14:56.61 |
+21:14:31.6 |
HIP 50174 |
7.66 |
| 2026-06-21 12:00 |
10:15:53.84 |
+21:08:05.8 |
HIP 50174 |
19.69 |
| 2026-06-22 00:00 |
10:16:50.99 |
+21:01:39.6 |
HIP 50174 |
33.99 |