メタデータ
| 項目 |
値 |
| Designation |
243P/NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-03-02T17:19:15.769920Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T11:43:19Z |
| Obs used |
821 |
| 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) |
2012-02-23.0000000 |
| e |
0.35916272 |
| q (au) |
2.455220 |
| a (au) |
3.831269 |
| i (deg) |
7.639485 |
| Ω (om, deg) |
87.672588 |
| ω (w, deg) |
283.778875 |
| M (ma, deg) |
46.956602 |
等級
散乱 + 全体線形
$$
M_a = (11.191 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.191 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.819 |
| k |
0.998 |
| 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 |
01:05:35.26 |
+01:29:47.6 |
HIP 5064 |
12.95 |
| 2026-03-26 12:00 |
01:06:29.68 |
+01:35:53.6 |
HIP 5163 |
8.96 |
| 2026-03-27 00:00 |
01:07:24.10 |
+01:41:59.0 |
HIP 5163 |
19.76 |
| 2026-03-27 12:00 |
01:08:18.55 |
+01:48:04.0 |
HIP 5315 |
12.51 |
| 2026-03-28 00:00 |
01:09:13.00 |
+01:54:08.5 |
HIP 5315 |
19.15 |
| 2026-03-28 12:00 |
01:10:07.47 |
+02:00:12.5 |
HIP 5510 |
27.32 |
| 2026-03-29 00:00 |
01:11:01.94 |
+02:06:16.1 |
HIP 5510 |
21.67 |
| 2026-03-29 12:00 |
01:11:56.43 |
+02:12:19.1 |
HIP 5646 |
18.14 |
| 2026-03-30 00:00 |
01:12:50.94 |
+02:18:21.6 |
HIP 5646 |
11.15 |
| 2026-03-30 12:00 |
01:13:45.45 |
+02:24:23.7 |
HIP 5738 |
9.47 |
| 2026-03-31 00:00 |
01:14:39.98 |
+02:30:25.2 |
HIP 5818 |
12.45 |
| 2026-03-31 12:00 |
01:15:34.51 |
+02:36:26.1 |
HIP 5949 |
17.15 |
| 2026-04-01 00:00 |
01:16:29.06 |
+02:42:26.6 |
HIP 5949 |
2.38 |
| 2026-04-01 12:00 |
01:17:23.63 |
+02:48:26.5 |
HIP 5949 |
12.67 |
| 2026-04-02 00:00 |
01:18:18.20 |
+02:54:25.9 |
HIP 6096 |
21.40 |
| 2026-04-02 12:00 |
01:19:12.79 |
+03:00:24.7 |
HIP 6188 |
17.21 |
| 2026-04-03 00:00 |
01:20:07.38 |
+03:06:22.9 |
HIP 6188 |
15.40 |
| 2026-04-03 12:00 |
01:21:02.00 |
+03:12:20.6 |
HIP 6188 |
24.92 |
| 2026-04-04 00:00 |
01:21:56.62 |
+03:18:17.8 |
HIP 6407 |
13.67 |
| 2026-04-04 12:00 |
01:22:51.25 |
+03:24:14.3 |
HIP 6407 |
10.45 |
| 2026-04-05 00:00 |
01:23:45.90 |
+03:30:10.3 |
HIP 6516 |
11.34 |
| 2026-04-05 12:00 |
01:24:40.56 |
+03:36:05.7 |
HIP 6614 |
15.53 |
| 2026-04-06 00:00 |
01:25:35.23 |
+03:42:00.5 |
HIP 6751 |
21.89 |
| 2026-04-06 12:00 |
01:26:29.91 |
+03:47:54.6 |
HIP 6783 |
11.66 |
| 2026-04-07 00:00 |
01:27:24.60 |
+03:53:48.2 |
HIP 6805 |
2.76 |
| 2026-04-07 12:00 |
01:28:19.31 |
+03:59:41.2 |
HIP 6805 |
13.17 |
| 2026-04-08 00:00 |
01:29:14.02 |
+04:05:33.5 |
HIP 6922 |
18.50 |
| 2026-04-08 12:00 |
01:30:08.75 |
+04:11:25.2 |
HIP 7055 |
24.44 |
| 2026-04-09 00:00 |
01:31:03.49 |
+04:17:16.3 |
HIP 7055 |
15.41 |
| 2026-04-09 12:00 |
01:31:58.25 |
+04:23:06.7 |
HIP 7055 |
17.86 |
| 2026-04-10 00:00 |
01:32:53.01 |
+04:28:56.5 |
HIP 7210 |
17.53 |
| 2026-04-10 12:00 |
01:33:47.78 |
+04:34:45.6 |
HIP 7210 |
18.03 |
| 2026-04-11 00:00 |
01:34:42.57 |
+04:40:34.0 |
HIP 7414 |
23.92 |
| 2026-04-11 12:00 |
01:35:37.37 |
+04:46:21.8 |
HIP 7414 |
14.33 |
| 2026-04-12 00:00 |
01:36:32.17 |
+04:52:08.9 |
HIP 7414 |
16.69 |
| 2026-04-12 12:00 |
01:37:26.99 |
+04:57:55.3 |
HIP 7414 |
28.13 |
| 2026-04-13 00:00 |
01:38:21.82 |
+05:03:41.0 |
HIP 7701 |
33.07 |
| 2026-04-13 12:00 |
01:39:16.66 |
+05:09:26.0 |
HIP 7701 |
25.37 |
| 2026-04-14 00:00 |
01:40:11.51 |
+05:15:10.3 |
HIP 7824 |
20.59 |
| 2026-04-14 12:00 |
01:41:06.37 |
+05:20:53.9 |
HIP 7884 |
9.67 |
| 2026-04-15 00:00 |
01:42:01.24 |
+05:26:36.8 |
HIP 7884 |
9.18 |
| 2026-04-15 12:00 |
01:42:56.12 |
+05:32:18.9 |
HIP 8064 |
16.29 |
| 2026-04-16 00:00 |
01:43:51.00 |
+05:38:00.3 |
HIP 8064 |
7.41 |