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) |
| 2026-06-01 00:00 |
21:57:13.06 |
+09:26:34.9 |
HIP 108457 |
22.12 |
| 2026-06-01 12:00 |
21:57:11.99 |
+09:29:01.2 |
HIP 108457 |
24.09 |
| 2026-06-02 00:00 |
21:57:10.73 |
+09:31:26.8 |
HIP 108457 |
26.15 |
| 2026-06-02 12:00 |
21:57:09.30 |
+09:33:51.8 |
HIP 108457 |
28.30 |
| 2026-06-03 00:00 |
21:57:07.67 |
+09:36:16.1 |
HIP 108457 |
30.51 |
| 2026-06-03 12:00 |
21:57:05.86 |
+09:38:39.7 |
HIP 108413 |
30.93 |
| 2026-06-04 00:00 |
21:57:03.86 |
+09:41:02.6 |
HIP 108413 |
28.85 |
| 2026-06-04 12:00 |
21:57:01.68 |
+09:43:24.8 |
HIP 108413 |
26.87 |
| 2026-06-05 00:00 |
21:56:59.30 |
+09:45:46.2 |
HIP 108263 |
24.94 |
| 2026-06-05 12:00 |
21:56:56.74 |
+09:48:07.0 |
HIP 108263 |
22.69 |
| 2026-06-06 00:00 |
21:56:53.99 |
+09:50:26.9 |
HIP 108263 |
20.47 |
| 2026-06-06 12:00 |
21:56:51.05 |
+09:52:46.2 |
HIP 108263 |
18.28 |
| 2026-06-07 00:00 |
21:56:47.92 |
+09:55:04.6 |
HIP 108263 |
16.12 |
| 2026-06-07 12:00 |
21:56:44.59 |
+09:57:22.3 |
HIP 108263 |
14.03 |
| 2026-06-08 00:00 |
21:56:41.08 |
+09:59:39.2 |
HIP 108263 |
12.04 |
| 2026-06-08 12:00 |
21:56:37.37 |
+10:01:55.2 |
HIP 108263 |
10.20 |
| 2026-06-09 00:00 |
21:56:33.47 |
+10:04:10.5 |
HIP 108263 |
8.62 |
| 2026-06-09 12:00 |
21:56:29.38 |
+10:06:24.9 |
HIP 108263 |
7.48 |
| 2026-06-10 00:00 |
21:56:25.09 |
+10:08:38.5 |
HIP 108263 |
7.00 |
| 2026-06-10 12:00 |
21:56:20.61 |
+10:10:51.2 |
HIP 108263 |
7.31 |
| 2026-06-11 00:00 |
21:56:15.94 |
+10:13:03.0 |
HIP 108263 |
8.34 |
| 2026-06-11 12:00 |
21:56:11.06 |
+10:15:14.0 |
HIP 108263 |
9.86 |
| 2026-06-12 00:00 |
21:56:06.00 |
+10:17:24.0 |
HIP 108263 |
11.71 |
| 2026-06-12 12:00 |
21:56:00.73 |
+10:19:33.1 |
HIP 108263 |
13.74 |
| 2026-06-13 00:00 |
21:55:55.27 |
+10:21:41.3 |
HIP 108263 |
15.90 |
| 2026-06-13 12:00 |
21:55:49.62 |
+10:23:48.6 |
HIP 108263 |
18.14 |
| 2026-06-14 00:00 |
21:55:43.76 |
+10:25:54.9 |
HIP 108263 |
20.45 |
| 2026-06-14 12:00 |
21:55:37.71 |
+10:28:00.3 |
HIP 108263 |
22.80 |
| 2026-06-15 00:00 |
21:55:31.46 |
+10:30:04.6 |
HIP 108228 |
22.75 |
| 2026-06-15 12:00 |
21:55:25.01 |
+10:32:08.0 |
HIP 108228 |
20.75 |
| 2026-06-16 00:00 |
21:55:18.37 |
+10:34:10.4 |
HIP 108228 |
18.93 |
| 2026-06-16 12:00 |
21:55:11.52 |
+10:36:11.7 |
HIP 108228 |
17.33 |
| 2026-06-17 00:00 |
21:55:04.48 |
+10:38:12.0 |
HIP 108228 |
16.05 |
| 2026-06-17 12:00 |
21:54:57.24 |
+10:40:11.3 |
HIP 108228 |
15.17 |
| 2026-06-18 00:00 |
21:54:49.80 |
+10:42:09.5 |
HIP 108228 |
14.77 |
| 2026-06-18 12:00 |
21:54:42.17 |
+10:44:06.6 |
HIP 108228 |
14.91 |
| 2026-06-19 00:00 |
21:54:34.33 |
+10:46:02.7 |
HIP 108228 |
15.57 |
| 2026-06-19 12:00 |
21:54:26.30 |
+10:47:57.6 |
HIP 108228 |
16.71 |
| 2026-06-20 00:00 |
21:54:18.07 |
+10:49:51.5 |
HIP 108228 |
18.25 |
| 2026-06-20 12:00 |
21:54:09.64 |
+10:51:44.2 |
HIP 108228 |
20.11 |
| 2026-06-21 00:00 |
21:54:01.02 |
+10:53:35.8 |
HIP 108228 |
22.21 |
| 2026-06-21 12:00 |
21:53:52.20 |
+10:55:26.3 |
HIP 108228 |
24.50 |
| 2026-06-22 00:00 |
21:53:43.18 |
+10:57:15.6 |
HIP 108228 |
26.94 |