メタデータ
| 項目 |
値 |
| Designation |
243P/NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-03-02T16:36:03.709440Z |
| Orbit solution date (soln_date, UTC) |
2026-05-05T09:12:21Z |
| Obs used |
825 |
| NEO |
- |
| M1 |
9.300 |
| K1 |
18.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-03-16.0000000 |
| e |
0.35912835 |
| q (au) |
2.455172 |
| a (au) |
3.830988 |
| i (deg) |
7.639598 |
| Ω (om, deg) |
87.672761 |
| ω (w, deg) |
283.771605 |
| M (ma, deg) |
49.857461 |
等級
散乱 + 全体線形
$$
M_a = (10.910 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.910 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.855 |
| 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) |
| 2026-06-01 00:00 |
03:08:04.28 |
+13:15:07.5 |
HIP 14579 |
5.34 |
| 2026-06-01 12:00 |
03:08:58.80 |
+13:19:15.2 |
HIP 14579 |
14.40 |
| 2026-06-02 00:00 |
03:09:53.30 |
+13:23:21.7 |
HIP 14694 |
22.71 |
| 2026-06-02 12:00 |
03:10:47.79 |
+13:27:27.1 |
HIP 14694 |
23.21 |
| 2026-06-03 00:00 |
03:11:42.25 |
+13:31:31.2 |
HIP 14821 |
29.08 |
| 2026-06-03 12:00 |
03:12:36.69 |
+13:35:34.2 |
HIP 14897 |
27.31 |
| 2026-06-04 00:00 |
03:13:31.11 |
+13:39:35.9 |
HIP 14897 |
29.30 |
| 2026-06-04 12:00 |
03:14:25.50 |
+13:43:36.4 |
HIP 15233 |
30.07 |
| 2026-06-05 00:00 |
03:15:19.88 |
+13:47:35.7 |
HIP 15233 |
16.30 |
| 2026-06-05 12:00 |
03:16:14.23 |
+13:51:33.8 |
HIP 15233 |
2.76 |
| 2026-06-06 00:00 |
03:17:08.56 |
+13:55:30.7 |
HIP 15233 |
11.36 |
| 2026-06-06 12:00 |
03:18:02.86 |
+13:59:26.3 |
HIP 15345 |
8.97 |
| 2026-06-07 00:00 |
03:18:57.14 |
+14:03:20.8 |
HIP 15345 |
20.08 |
| 2026-06-07 12:00 |
03:19:51.39 |
+14:07:14.0 |
HIP 15558 |
8.99 |
| 2026-06-08 00:00 |
03:20:45.62 |
+14:11:06.0 |
HIP 15558 |
4.81 |
| 2026-06-08 12:00 |
03:21:39.82 |
+14:14:56.7 |
HIP 15558 |
18.45 |
| 2026-06-09 00:00 |
03:22:34.00 |
+14:18:46.2 |
HIP 15558 |
32.11 |
| 2026-06-09 12:00 |
03:23:28.14 |
+14:22:34.5 |
HIP 15906 |
29.62 |
| 2026-06-10 00:00 |
03:24:22.26 |
+14:26:21.6 |
HIP 15906 |
26.43 |
| 2026-06-10 12:00 |
03:25:16.35 |
+14:30:07.4 |
HIP 16007 |
17.97 |
| 2026-06-11 00:00 |
03:26:10.41 |
+14:33:51.9 |
HIP 16007 |
16.45 |
| 2026-06-11 12:00 |
03:27:04.45 |
+14:37:35.3 |
HIP 16007 |
24.25 |
| 2026-06-12 00:00 |
03:27:58.45 |
+14:41:17.3 |
HIP 16221 |
23.53 |
| 2026-06-12 12:00 |
03:28:52.41 |
+14:44:58.2 |
HIP 16221 |
14.91 |
| 2026-06-13 00:00 |
03:29:46.35 |
+14:48:37.7 |
HIP 16221 |
16.08 |
| 2026-06-13 12:00 |
03:30:40.25 |
+14:52:16.0 |
HIP 16221 |
25.71 |
| 2026-06-14 00:00 |
03:31:34.12 |
+14:55:53.1 |
HIP 16571 |
30.39 |
| 2026-06-14 12:00 |
03:32:27.96 |
+14:59:28.9 |
HIP 16571 |
17.85 |
| 2026-06-15 00:00 |
03:33:21.75 |
+15:03:03.4 |
HIP 16571 |
8.83 |
| 2026-06-15 12:00 |
03:34:15.51 |
+15:06:36.7 |
HIP 16571 |
14.14 |
| 2026-06-16 00:00 |
03:35:09.24 |
+15:10:08.7 |
HIP 16571 |
26.13 |
| 2026-06-16 12:00 |
03:36:02.92 |
+15:13:39.4 |
HIP 16891 |
20.37 |
| 2026-06-17 00:00 |
03:36:56.57 |
+15:17:08.9 |
HIP 16891 |
12.81 |
| 2026-06-17 12:00 |
03:37:50.18 |
+15:20:37.1 |
HIP 16924 |
5.25 |
| 2026-06-18 00:00 |
03:38:43.74 |
+15:24:04.1 |
HIP 16924 |
13.59 |
| 2026-06-18 12:00 |
03:39:37.26 |
+15:27:29.7 |
HIP 16985 |
25.20 |
| 2026-06-19 00:00 |
03:40:30.75 |
+15:30:54.1 |
HIP 17318 |
33.03 |
| 2026-06-19 12:00 |
03:41:24.18 |
+15:34:17.3 |
HIP 17318 |
20.82 |
| 2026-06-20 00:00 |
03:42:17.58 |
+15:37:39.1 |
HIP 17318 |
11.44 |
| 2026-06-20 12:00 |
03:43:10.93 |
+15:40:59.7 |
HIP 17318 |
13.46 |
| 2026-06-21 00:00 |
03:44:04.24 |
+15:44:19.0 |
HIP 17413 |
17.26 |
| 2026-06-21 12:00 |
03:44:57.50 |
+15:47:37.1 |
HIP 17413 |
20.82 |
| 2026-06-22 00:00 |
03:45:50.71 |
+15:50:53.9 |
HIP 17413 |
30.30 |