444P/WISE-PANSTARRS
メタデータ
| 項目 |
値 |
| Designation |
444P/WISE-PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-07-10T08:57:56.568960Z |
| Orbit solution date (soln_date, UTC) |
2024-10-10T17:30:16Z |
| Obs used |
247 |
| NEO |
- |
| M1 |
16.700 |
| K1 |
9.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2010-06-09T02:52:48.864000Z |
| Discovery magnitude (MPC) |
- |
| 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) |
2022-03-11.0000000 |
| e |
0.57029119 |
| q (au) |
1.473180 |
| a (au) |
3.428321 |
| i (deg) |
22.124438 |
| Ω (om, deg) |
89.406707 |
| ω (w, deg) |
170.888063 |
| M (ma, deg) |
341.154570 |
等級
散乱 + 全体線形
$$
M_a = (16.117 + 4.549\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.117 |
| n |
4.549 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.943 |
| δ90 |
1.000 |
| 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) |
| 2026-02-03 00:00 |
05:13:51.54 |
+22:54:54.1 |
HIP 24415 |
16.56 |
| 2026-02-03 12:00 |
05:13:42.22 |
+22:55:26.3 |
HIP 24415 |
17.97 |
| 2026-02-04 00:00 |
05:13:33.10 |
+22:55:58.6 |
HIP 24415 |
19.50 |
| 2026-02-04 12:00 |
05:13:24.21 |
+22:56:30.9 |
HIP 24415 |
21.11 |
| 2026-02-05 00:00 |
05:13:15.53 |
+22:57:03.4 |
HIP 24415 |
22.78 |
| 2026-02-05 12:00 |
05:13:07.07 |
+22:57:35.9 |
HIP 24415 |
24.47 |
| 2026-02-06 00:00 |
05:12:58.84 |
+22:58:08.6 |
HIP 24151 |
25.37 |
| 2026-02-06 12:00 |
05:12:50.82 |
+22:58:41.4 |
HIP 24151 |
23.44 |
| 2026-02-07 00:00 |
05:12:43.02 |
+22:59:14.3 |
HIP 24151 |
21.57 |
| 2026-02-07 12:00 |
05:12:35.44 |
+22:59:47.3 |
HIP 24151 |
19.75 |
| 2026-02-08 00:00 |
05:12:28.09 |
+23:00:20.4 |
HIP 24151 |
17.98 |
| 2026-02-08 12:00 |
05:12:20.95 |
+23:00:53.7 |
HIP 24151 |
16.27 |
| 2026-02-09 00:00 |
05:12:14.04 |
+23:01:27.0 |
HIP 24151 |
14.60 |
| 2026-02-09 12:00 |
05:12:07.35 |
+23:02:00.5 |
HIP 24151 |
13.00 |
| 2026-02-10 00:00 |
05:12:00.88 |
+23:02:34.1 |
HIP 24151 |
11.45 |
| 2026-02-10 12:00 |
05:11:54.63 |
+23:03:07.8 |
HIP 24151 |
9.97 |
| 2026-02-11 00:00 |
05:11:48.61 |
+23:03:41.6 |
HIP 24151 |
8.56 |
| 2026-02-11 12:00 |
05:11:42.81 |
+23:04:15.6 |
HIP 24151 |
7.23 |
| 2026-02-12 00:00 |
05:11:37.23 |
+23:04:49.7 |
HIP 24151 |
6.02 |
| 2026-02-12 12:00 |
05:11:31.88 |
+23:05:23.9 |
HIP 24151 |
4.96 |
| 2026-02-13 00:00 |
05:11:26.75 |
+23:05:58.3 |
HIP 24151 |
4.12 |
| 2026-02-13 12:00 |
05:11:21.84 |
+23:06:32.7 |
HIP 24151 |
3.61 |
| 2026-02-14 00:00 |
05:11:17.16 |
+23:07:07.4 |
HIP 24151 |
3.53 |
| 2026-02-14 12:00 |
05:11:12.71 |
+23:07:42.1 |
HIP 24151 |
3.87 |
| 2026-02-15 00:00 |
05:11:08.47 |
+23:08:17.0 |
HIP 24151 |
4.49 |
| 2026-02-15 12:00 |
05:11:04.46 |
+23:08:52.0 |
HIP 24151 |
5.27 |
| 2026-02-16 00:00 |
05:11:00.68 |
+23:09:27.2 |
HIP 24151 |
6.13 |
| 2026-02-16 12:00 |
05:10:57.11 |
+23:10:02.4 |
HIP 24151 |
7.01 |
| 2026-02-17 00:00 |
05:10:53.78 |
+23:10:37.9 |
HIP 24151 |
7.91 |
| 2026-02-17 12:00 |
05:10:50.66 |
+23:11:13.4 |
HIP 24151 |
8.79 |
| 2026-02-18 00:00 |
05:10:47.77 |
+23:11:49.1 |
HIP 24151 |
9.65 |
| 2026-02-18 12:00 |
05:10:45.10 |
+23:12:25.0 |
HIP 24151 |
10.49 |
| 2026-02-19 00:00 |
05:10:42.66 |
+23:13:01.0 |
HIP 24151 |
11.31 |
| 2026-02-19 12:00 |
05:10:40.44 |
+23:13:37.1 |
HIP 24151 |
12.09 |
| 2026-02-20 00:00 |
05:10:38.44 |
+23:14:13.3 |
HIP 24151 |
12.85 |
| 2026-02-20 12:00 |
05:10:36.66 |
+23:14:49.7 |
HIP 24151 |
13.58 |
| 2026-02-21 00:00 |
05:10:35.10 |
+23:15:26.3 |
HIP 24151 |
14.29 |
| 2026-02-21 12:00 |
05:10:33.77 |
+23:16:02.9 |
HIP 24151 |
14.96 |
| 2026-02-22 00:00 |
05:10:32.65 |
+23:16:39.8 |
HIP 24151 |
15.61 |
| 2026-02-22 12:00 |
05:10:31.76 |
+23:17:16.7 |
HIP 24151 |
16.23 |
| 2026-02-23 00:00 |
05:10:31.08 |
+23:17:53.8 |
HIP 24151 |
16.83 |
| 2026-02-23 12:00 |
05:10:30.63 |
+23:18:31.0 |
HIP 24151 |
17.41 |
| 2026-02-24 00:00 |
05:10:30.39 |
+23:19:08.4 |
HIP 24151 |
17.97 |