メタデータ
| 項目 |
値 |
| Designation |
243P/NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-03-02T15:59:57.350400Z |
| Orbit solution date (soln_date, UTC) |
2026-08-25T08:42:12Z |
| Obs used |
828 |
| NEO |
- |
| M1 |
9.400 |
| K1 |
18.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-04-03.0000000 |
| e |
0.35910310 |
| q (au) |
2.455125 |
| a (au) |
3.830764 |
| i (deg) |
7.639688 |
| Ω (om, deg) |
87.672944 |
| ω (w, deg) |
283.765338 |
| M (ma, deg) |
52.231322 |
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) |
| 2026-09-25 00:00 |
06:01:49.14 |
+20:50:47.5 |
HIP 28494 |
16.63 |
| 2026-09-25 12:00 |
06:02:13.79 |
+20:51:19.4 |
HIP 28555 |
18.69 |
| 2026-09-26 00:00 |
06:02:38.14 |
+20:51:51.2 |
HIP 28659 |
17.99 |
| 2026-09-26 12:00 |
06:03:02.20 |
+20:52:23.0 |
HIP 28659 |
17.24 |
| 2026-09-27 00:00 |
06:03:25.96 |
+20:52:54.7 |
HIP 28659 |
18.28 |
| 2026-09-27 12:00 |
06:03:49.41 |
+20:53:26.4 |
HIP 28659 |
20.78 |
| 2026-09-28 00:00 |
06:04:12.57 |
+20:53:58.1 |
HIP 28659 |
24.25 |
| 2026-09-28 12:00 |
06:04:35.42 |
+20:54:29.8 |
HIP 28659 |
28.29 |
| 2026-09-29 00:00 |
06:04:57.96 |
+20:55:01.5 |
HIP 28965 |
27.17 |
| 2026-09-29 12:00 |
06:05:20.19 |
+20:55:33.2 |
HIP 28965 |
22.81 |
| 2026-09-30 00:00 |
06:05:42.11 |
+20:56:04.9 |
HIP 28965 |
18.95 |
| 2026-09-30 12:00 |
06:06:03.72 |
+20:56:36.6 |
HIP 28965 |
15.88 |
| 2026-10-01 00:00 |
06:06:25.02 |
+20:57:08.4 |
HIP 28965 |
14.05 |
| 2026-10-01 12:00 |
06:06:45.99 |
+20:57:40.2 |
HIP 29010 |
11.28 |
| 2026-10-02 00:00 |
06:07:06.64 |
+20:58:12.1 |
HIP 29010 |
9.37 |
| 2026-10-02 12:00 |
06:07:26.98 |
+20:58:44.1 |
HIP 29010 |
9.75 |
| 2026-10-03 00:00 |
06:07:46.99 |
+20:59:16.1 |
HIP 29010 |
12.13 |
| 2026-10-03 12:00 |
06:08:06.67 |
+20:59:48.3 |
HIP 29010 |
15.55 |
| 2026-10-04 00:00 |
06:08:26.02 |
+21:00:20.5 |
HIP 29077 |
18.23 |
| 2026-10-04 12:00 |
06:08:45.04 |
+21:00:52.9 |
HIP 29077 |
19.56 |
| 2026-10-05 00:00 |
06:09:03.73 |
+21:01:25.4 |
HIP 29077 |
21.68 |
| 2026-10-05 12:00 |
06:09:22.08 |
+21:01:58.1 |
HIP 29077 |
24.36 |
| 2026-10-06 00:00 |
06:09:40.09 |
+21:02:30.8 |
HIP 29367 |
25.42 |
| 2026-10-06 12:00 |
06:09:57.77 |
+21:03:03.8 |
HIP 29367 |
21.77 |
| 2026-10-07 00:00 |
06:10:15.10 |
+21:03:36.9 |
HIP 29367 |
18.41 |
| 2026-10-07 12:00 |
06:10:32.09 |
+21:04:10.2 |
HIP 29367 |
15.46 |
| 2026-10-08 00:00 |
06:10:48.73 |
+21:04:43.7 |
HIP 29367 |
13.15 |
| 2026-10-08 12:00 |
06:11:05.02 |
+21:05:17.4 |
HIP 29367 |
11.75 |
| 2026-10-09 00:00 |
06:11:20.97 |
+21:05:51.3 |
HIP 29367 |
11.54 |
| 2026-10-09 12:00 |
06:11:36.56 |
+21:06:25.4 |
HIP 29367 |
12.49 |
| 2026-10-10 00:00 |
06:11:51.80 |
+21:06:59.7 |
HIP 29367 |
14.32 |
| 2026-10-10 12:00 |
06:12:06.68 |
+21:07:34.3 |
HIP 29492 |
13.48 |
| 2026-10-11 00:00 |
06:12:21.21 |
+21:08:09.2 |
HIP 29492 |
10.53 |
| 2026-10-11 12:00 |
06:12:35.37 |
+21:08:44.3 |
HIP 29492 |
8.02 |
| 2026-10-12 00:00 |
06:12:49.18 |
+21:09:19.6 |
HIP 29492 |
6.35 |
| 2026-10-12 12:00 |
06:13:02.62 |
+21:09:55.3 |
HIP 29492 |
6.11 |
| 2026-10-13 00:00 |
06:13:15.71 |
+21:10:31.2 |
HIP 29492 |
7.33 |
| 2026-10-13 12:00 |
06:13:28.42 |
+21:11:07.4 |
HIP 29492 |
9.38 |
| 2026-10-14 00:00 |
06:13:40.77 |
+21:11:43.9 |
HIP 29492 |
11.77 |
| 2026-10-14 12:00 |
06:13:52.75 |
+21:12:20.8 |
HIP 29492 |
14.28 |
| 2026-10-15 00:00 |
06:14:04.36 |
+21:12:57.9 |
HIP 29492 |
16.82 |
| 2026-10-15 12:00 |
06:14:15.60 |
+21:13:35.4 |
HIP 29492 |
19.33 |
| 2026-10-16 00:00 |
06:14:26.47 |
+21:14:13.2 |
HIP 29744 |
21.73 |