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
$$
M_a = (15.683 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.683 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.838 |
| k |
0.999 |
| 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 |
07:18:05.03 |
+35:46:45.7 |
HIP 35282 |
15.95 |
| 2026-03-26 12:00 |
07:19:02.70 |
+35:43:58.8 |
HIP 35282 |
26.17 |
| 2026-03-27 00:00 |
07:20:00.57 |
+35:41:09.8 |
HIP 35688 |
32.09 |
| 2026-03-27 12:00 |
07:20:58.63 |
+35:38:18.8 |
HIP 35755 |
24.43 |
| 2026-03-28 00:00 |
07:21:56.87 |
+35:35:25.8 |
HIP 35755 |
19.81 |
| 2026-03-28 12:00 |
07:22:55.30 |
+35:32:30.9 |
HIP 35880 |
11.83 |
| 2026-03-29 00:00 |
07:23:53.91 |
+35:29:33.9 |
HIP 35880 |
0.45 |
| 2026-03-29 12:00 |
07:24:52.68 |
+35:26:35.0 |
HIP 36044 |
12.27 |
| 2026-03-30 00:00 |
07:25:51.63 |
+35:23:34.1 |
HIP 36044 |
4.74 |
| 2026-03-30 12:00 |
07:26:50.73 |
+35:20:31.2 |
HIP 36183 |
10.14 |
| 2026-03-31 00:00 |
07:27:50.00 |
+35:17:26.4 |
HIP 36183 |
15.55 |
| 2026-03-31 12:00 |
07:28:49.42 |
+35:14:19.6 |
HIP 36412 |
9.59 |
| 2026-04-01 00:00 |
07:29:48.99 |
+35:11:10.8 |
HIP 36412 |
3.93 |
| 2026-04-01 12:00 |
07:30:48.71 |
+35:08:00.1 |
HIP 36412 |
16.01 |
| 2026-04-02 00:00 |
07:31:48.57 |
+35:04:47.5 |
HIP 36694 |
21.90 |
| 2026-04-02 12:00 |
07:32:48.57 |
+35:01:32.9 |
HIP 36694 |
14.25 |
| 2026-04-03 00:00 |
07:33:48.70 |
+34:58:16.4 |
HIP 36694 |
15.82 |
| 2026-04-03 12:00 |
07:34:48.97 |
+34:54:58.0 |
HIP 36904 |
10.15 |
| 2026-04-04 00:00 |
07:35:49.36 |
+34:51:37.6 |
HIP 36904 |
13.84 |
| 2026-04-04 12:00 |
07:36:49.87 |
+34:48:15.4 |
HIP 36904 |
24.71 |
| 2026-04-05 00:00 |
07:37:50.51 |
+34:44:51.2 |
HIP 37177 |
18.89 |
| 2026-04-05 12:00 |
07:38:51.26 |
+34:41:25.1 |
HIP 37265 |
7.42 |
| 2026-04-06 00:00 |
07:39:52.13 |
+34:37:57.1 |
HIP 37265 |
9.14 |
| 2026-04-06 12:00 |
07:40:53.10 |
+34:34:27.3 |
HIP 37397 |
7.74 |
| 2026-04-07 00:00 |
07:41:54.19 |
+34:30:55.5 |
HIP 37475 |
16.26 |
| 2026-04-07 12:00 |
07:42:55.37 |
+34:27:21.9 |
HIP 37475 |
25.73 |
| 2026-04-08 00:00 |
07:43:56.66 |
+34:23:46.4 |
HIP 37861 |
23.60 |
| 2026-04-08 12:00 |
07:44:58.04 |
+34:20:09.1 |
HIP 37861 |
15.92 |
| 2026-04-09 00:00 |
07:45:59.52 |
+34:16:29.9 |
HIP 37861 |
17.24 |
| 2026-04-09 12:00 |
07:47:01.10 |
+34:12:48.8 |
HIP 38013 |
6.14 |
| 2026-04-10 00:00 |
07:48:02.76 |
+34:09:05.9 |
HIP 38013 |
7.54 |
| 2026-04-10 12:00 |
07:49:04.50 |
+34:05:21.1 |
HIP 38272 |
18.85 |
| 2026-04-11 00:00 |
07:50:06.33 |
+34:01:34.5 |
HIP 38272 |
5.85 |
| 2026-04-11 12:00 |
07:51:08.24 |
+33:57:46.1 |
HIP 38272 |
8.38 |
| 2026-04-12 00:00 |
07:52:10.23 |
+33:53:55.8 |
HIP 38405 |
2.89 |
| 2026-04-12 12:00 |
07:53:12.29 |
+33:50:03.7 |
HIP 38405 |
14.12 |
| 2026-04-13 00:00 |
07:54:14.42 |
+33:46:09.9 |
HIP 38469 |
21.74 |
| 2026-04-13 12:00 |
07:55:16.63 |
+33:42:14.2 |
HIP 38469 |
32.25 |
| 2026-04-14 00:00 |
07:56:18.90 |
+33:38:16.7 |
HIP 38893 |
29.55 |
| 2026-04-14 12:00 |
07:57:21.23 |
+33:34:17.5 |
HIP 38949 |
25.29 |
| 2026-04-15 00:00 |
07:58:23.63 |
+33:30:16.5 |
HIP 39036 |
24.37 |
| 2026-04-15 12:00 |
07:59:26.09 |
+33:26:13.7 |
HIP 39036 |
26.33 |
| 2026-04-16 00:00 |
08:00:28.60 |
+33:22:09.1 |
HIP 39036 |
34.14 |