メタデータ
| 項目 |
値 |
| Designation |
463P/NEOWISE |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-03-29T19:41:35.615040Z |
| Orbit solution date (soln_date, UTC) |
2024-04-13T16:43:14Z |
| Obs used |
114 |
| NEO |
Yes |
| M1 |
18.300 |
| K1 |
8.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2018-04-22T23:03:48.672000Z |
| Discovery magnitude (MPC) |
19.00 R |
| Discovery observatory (MPC) |
C51 · WISE |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2021-08-07.0000000 |
| e |
0.82534605 |
| q (au) |
0.519825 |
| a (au) |
2.976315 |
| i (deg) |
29.440185 |
| Ω (om, deg) |
283.717498 |
| ω (w, deg) |
215.914075 |
| M (ma, deg) |
244.865061 |
等級
散乱 + 全体線形
$$
M_a = (18.351 + 4.709\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
18.351 |
| n |
4.709 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.893 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
21:36:59.16 |
+03:19:43.9 |
HIP 106645 |
13.96 |
| 2026-03-26 12:00 |
21:37:15.77 |
+03:22:25.2 |
HIP 106645 |
18.86 |
| 2026-03-27 00:00 |
21:37:32.29 |
+03:25:06.7 |
HIP 106645 |
23.76 |
| 2026-03-27 12:00 |
21:37:48.74 |
+03:27:48.5 |
HIP 106645 |
28.66 |
| 2026-03-28 00:00 |
21:38:05.11 |
+03:30:30.6 |
HIP 106645 |
33.54 |
| 2026-03-28 12:00 |
21:38:21.39 |
+03:33:13.0 |
HIP 107003 |
30.71 |
| 2026-03-29 00:00 |
21:38:37.60 |
+03:35:55.6 |
HIP 107003 |
25.98 |
| 2026-03-29 12:00 |
21:38:53.72 |
+03:38:38.5 |
HIP 107003 |
21.34 |
| 2026-03-30 00:00 |
21:39:09.76 |
+03:41:21.7 |
HIP 107003 |
16.84 |
| 2026-03-30 12:00 |
21:39:25.72 |
+03:44:05.1 |
HIP 107003 |
12.62 |
| 2026-03-31 00:00 |
21:39:41.59 |
+03:46:48.7 |
HIP 107003 |
9.03 |
| 2026-03-31 12:00 |
21:39:57.38 |
+03:49:32.6 |
HIP 107003 |
7.11 |
| 2026-04-01 00:00 |
21:40:13.08 |
+03:52:16.8 |
HIP 107003 |
8.10 |
| 2026-04-01 12:00 |
21:40:28.70 |
+03:55:01.2 |
HIP 107046 |
5.02 |
| 2026-04-02 00:00 |
21:40:44.22 |
+03:57:45.8 |
HIP 107046 |
4.07 |
| 2026-04-02 12:00 |
21:40:59.67 |
+04:00:30.6 |
HIP 107046 |
7.28 |
| 2026-04-03 00:00 |
21:41:15.02 |
+04:03:15.7 |
HIP 107046 |
11.57 |
| 2026-04-03 12:00 |
21:41:30.28 |
+04:06:01.0 |
HIP 107046 |
16.09 |
| 2026-04-04 00:00 |
21:41:45.46 |
+04:08:46.5 |
HIP 107046 |
20.68 |
| 2026-04-04 12:00 |
21:42:00.54 |
+04:11:32.2 |
HIP 107046 |
25.28 |
| 2026-04-05 00:00 |
21:42:15.53 |
+04:14:18.2 |
HIP 107046 |
29.89 |
| 2026-04-05 12:00 |
21:42:30.43 |
+04:17:04.3 |
HIP 107142 |
33.44 |
| 2026-04-06 00:00 |
21:42:45.24 |
+04:19:50.6 |
HIP 107142 |
31.57 |
| 2026-04-06 12:00 |
21:42:59.95 |
+04:22:37.1 |
HIP 107142 |
30.27 |
| 2026-04-07 00:00 |
21:43:14.57 |
+04:25:23.9 |
HIP 107142 |
29.63 |
| 2026-04-07 12:00 |
21:43:29.09 |
+04:28:10.8 |
HIP 107142 |
29.67 |
| 2026-04-08 00:00 |
21:43:43.52 |
+04:30:57.9 |
HIP 107142 |
30.38 |
| 2026-04-08 12:00 |
21:43:57.84 |
+04:33:45.1 |
HIP 107142 |
31.71 |
| 2026-04-09 00:00 |
21:44:12.08 |
+04:36:32.5 |
HIP 107245 |
32.85 |
| 2026-04-09 12:00 |
21:44:26.21 |
+04:39:20.1 |
HIP 107245 |
32.03 |
| 2026-04-10 00:00 |
21:44:40.24 |
+04:42:07.9 |
HIP 107245 |
31.81 |
| 2026-04-10 12:00 |
21:44:54.18 |
+04:44:55.8 |
HIP 107245 |
32.20 |
| 2026-04-11 00:00 |
21:45:08.01 |
+04:47:43.8 |
HIP 107245 |
33.16 |
| 2026-04-11 12:00 |
21:45:21.74 |
+04:50:32.0 |
HIP 107245 |
34.65 |
| 2026-04-12 00:00 |
21:45:35.36 |
+04:53:20.4 |
HIP 107543 |
35.89 |
| 2026-04-12 12:00 |
21:45:48.89 |
+04:56:08.9 |
HIP 107543 |
31.73 |
| 2026-04-13 00:00 |
21:46:02.30 |
+04:58:57.5 |
HIP 107543 |
27.66 |
| 2026-04-13 12:00 |
21:46:15.62 |
+05:01:46.2 |
HIP 107543 |
23.70 |
| 2026-04-14 00:00 |
21:46:28.82 |
+05:04:35.0 |
HIP 107543 |
19.91 |
| 2026-04-14 12:00 |
21:46:41.92 |
+05:07:23.9 |
HIP 107543 |
16.39 |
| 2026-04-15 00:00 |
21:46:54.91 |
+05:10:13.0 |
HIP 107543 |
13.34 |
| 2026-04-15 12:00 |
21:47:07.79 |
+05:13:02.1 |
HIP 107543 |
11.13 |
| 2026-04-16 00:00 |
21:47:20.56 |
+05:15:51.4 |
HIP 107543 |
10.28 |