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
$$
M_a = (18.352 + 4.710\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
18.352 |
| n |
4.710 |
| 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) |
| 2026-09-20 00:00 |
20:56:44.17 |
+09:17:47.1 |
HIP 103333 |
9.81 |
| 2026-09-20 12:00 |
20:56:28.71 |
+09:15:15.8 |
HIP 103333 |
5.76 |
| 2026-09-21 00:00 |
20:56:13.45 |
+09:12:44.3 |
HIP 103333 |
3.51 |
| 2026-09-21 12:00 |
20:55:58.38 |
+09:10:12.4 |
HIP 103333 |
5.69 |
| 2026-09-22 00:00 |
20:55:43.51 |
+09:07:40.4 |
HIP 103333 |
9.62 |
| 2026-09-22 12:00 |
20:55:28.83 |
+09:05:08.1 |
HIP 103333 |
13.84 |
| 2026-09-23 00:00 |
20:55:14.36 |
+09:02:35.6 |
HIP 103333 |
18.13 |
| 2026-09-23 12:00 |
20:55:00.08 |
+09:00:03.0 |
HIP 103365 |
21.91 |
| 2026-09-24 00:00 |
20:54:46.01 |
+08:57:30.2 |
HIP 103365 |
25.55 |
| 2026-09-24 12:00 |
20:54:32.14 |
+08:54:57.2 |
HIP 103165 |
28.39 |
| 2026-09-25 00:00 |
20:54:18.47 |
+08:52:24.2 |
HIP 103165 |
30.33 |
| 2026-09-25 12:00 |
20:54:05.01 |
+08:49:51.1 |
HIP 102986 |
32.07 |
| 2026-09-26 00:00 |
20:53:51.76 |
+08:47:17.9 |
HIP 102986 |
28.63 |
| 2026-09-26 12:00 |
20:53:38.71 |
+08:44:44.7 |
HIP 102986 |
25.44 |
| 2026-09-27 00:00 |
20:53:25.87 |
+08:42:11.4 |
HIP 102986 |
22.61 |
| 2026-09-27 12:00 |
20:53:13.23 |
+08:39:38.2 |
HIP 102986 |
20.25 |
| 2026-09-28 00:00 |
20:53:00.81 |
+08:37:04.9 |
HIP 102986 |
18.52 |
| 2026-09-28 12:00 |
20:52:48.60 |
+08:34:31.7 |
HIP 102986 |
17.59 |
| 2026-09-29 00:00 |
20:52:36.60 |
+08:31:58.6 |
HIP 102986 |
17.55 |
| 2026-09-29 12:00 |
20:52:24.81 |
+08:29:25.5 |
HIP 102986 |
18.38 |
| 2026-09-30 00:00 |
20:52:13.23 |
+08:26:52.5 |
HIP 102986 |
19.95 |
| 2026-09-30 12:00 |
20:52:01.87 |
+08:24:19.7 |
HIP 102986 |
22.08 |
| 2026-10-01 00:00 |
20:51:50.72 |
+08:21:47.0 |
HIP 102986 |
24.62 |
| 2026-10-01 12:00 |
20:51:39.79 |
+08:19:14.4 |
HIP 102986 |
27.42 |
| 2026-10-02 00:00 |
20:51:29.08 |
+08:16:42.1 |
HIP 103106 |
29.64 |
| 2026-10-02 12:00 |
20:51:18.58 |
+08:14:09.9 |
HIP 102838 |
29.78 |
| 2026-10-03 00:00 |
20:51:08.30 |
+08:11:37.9 |
HIP 102838 |
26.21 |
| 2026-10-03 12:00 |
20:50:58.24 |
+08:09:06.2 |
HIP 102838 |
22.69 |
| 2026-10-04 00:00 |
20:50:48.40 |
+08:06:34.7 |
HIP 102838 |
19.21 |
| 2026-10-04 12:00 |
20:50:38.78 |
+08:04:03.5 |
HIP 102838 |
15.78 |
| 2026-10-05 00:00 |
20:50:29.38 |
+08:01:32.6 |
HIP 102838 |
12.41 |
| 2026-10-05 12:00 |
20:50:20.20 |
+07:59:02.0 |
HIP 102838 |
9.10 |
| 2026-10-06 00:00 |
20:50:11.25 |
+07:56:31.8 |
HIP 102838 |
5.90 |
| 2026-10-06 12:00 |
20:50:02.51 |
+07:54:01.9 |
HIP 102838 |
3.03 |
| 2026-10-07 00:00 |
20:49:54.00 |
+07:51:32.4 |
HIP 102819 |
1.46 |
| 2026-10-07 12:00 |
20:49:45.72 |
+07:49:03.2 |
HIP 102819 |
2.86 |
| 2026-10-08 00:00 |
20:49:37.66 |
+07:46:34.5 |
HIP 102819 |
5.89 |
| 2026-10-08 12:00 |
20:49:29.82 |
+07:44:06.2 |
HIP 102819 |
8.99 |
| 2026-10-09 00:00 |
20:49:22.20 |
+07:41:38.4 |
HIP 102819 |
12.08 |
| 2026-10-09 12:00 |
20:49:14.82 |
+07:39:11.1 |
HIP 102674 |
13.69 |
| 2026-10-10 00:00 |
20:49:07.66 |
+07:36:44.2 |
HIP 102674 |
11.50 |
| 2026-10-10 12:00 |
20:49:00.72 |
+07:34:17.9 |
HIP 102674 |
9.83 |
| 2026-10-11 00:00 |
20:48:54.01 |
+07:31:52.0 |
HIP 102674 |
8.91 |