メタデータ
| 項目 |
値 |
| Designation |
C/2010 D4 (WISE) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2009-03-30T22:23:21.324480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:40Z |
| Obs used |
113 |
| NEO |
- |
| M1 |
11.600 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-04-12.0000000 |
| e |
0.88945973 |
| q (au) |
7.148209 |
| a (au) |
64.666104 |
| i (deg) |
105.659652 |
| Ω (om, deg) |
266.783514 |
| ω (w, deg) |
44.489319 |
| M (ma, deg) |
0.714674 |
等級
散乱 + 全体線形
$$
M_a = (15.542 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.542 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.818 |
| k |
0.800 |
| 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) |
| 2026-05-12 00:00 |
05:49:53.10 |
+31:05:49.8 |
HIP 27582 |
7.89 |
| 2026-05-12 12:00 |
05:49:56.60 |
+31:05:38.7 |
HIP 27582 |
7.12 |
| 2026-05-13 00:00 |
05:50:00.12 |
+31:05:27.7 |
HIP 27582 |
6.35 |
| 2026-05-13 12:00 |
05:50:03.66 |
+31:05:16.7 |
HIP 27582 |
5.57 |
| 2026-05-14 00:00 |
05:50:07.22 |
+31:05:05.8 |
HIP 27582 |
4.78 |
| 2026-05-14 12:00 |
05:50:10.80 |
+31:04:55.0 |
HIP 27582 |
4.00 |
| 2026-05-15 00:00 |
05:50:14.41 |
+31:04:44.2 |
HIP 27582 |
3.20 |
| 2026-05-15 12:00 |
05:50:18.03 |
+31:04:33.5 |
HIP 27582 |
2.41 |
| 2026-05-16 00:00 |
05:50:21.67 |
+31:04:22.8 |
HIP 27582 |
1.61 |
| 2026-05-16 12:00 |
05:50:25.33 |
+31:04:12.2 |
HIP 27582 |
0.81 |
| 2026-05-17 00:00 |
05:50:29.02 |
+31:04:01.6 |
HIP 27582 |
0.12 |
| 2026-05-17 12:00 |
05:50:32.72 |
+31:03:51.1 |
HIP 27582 |
0.83 |
| 2026-05-18 00:00 |
05:50:36.43 |
+31:03:40.7 |
HIP 27582 |
1.64 |
| 2026-05-18 12:00 |
05:50:40.17 |
+31:03:30.3 |
HIP 27582 |
2.46 |
| 2026-05-19 00:00 |
05:50:43.93 |
+31:03:20.0 |
HIP 27582 |
3.28 |
| 2026-05-19 12:00 |
05:50:47.70 |
+31:03:09.7 |
HIP 27582 |
4.10 |
| 2026-05-20 00:00 |
05:50:51.49 |
+31:02:59.5 |
HIP 27582 |
4.93 |
| 2026-05-20 12:00 |
05:50:55.30 |
+31:02:49.4 |
HIP 27582 |
5.77 |
| 2026-05-21 00:00 |
05:50:59.12 |
+31:02:39.3 |
HIP 27582 |
6.60 |
| 2026-05-21 12:00 |
05:51:02.96 |
+31:02:29.3 |
HIP 27582 |
7.44 |
| 2026-05-22 00:00 |
05:51:06.82 |
+31:02:19.3 |
HIP 27582 |
8.28 |
| 2026-05-22 12:00 |
05:51:10.69 |
+31:02:09.4 |
HIP 27582 |
9.13 |
| 2026-05-23 00:00 |
05:51:14.58 |
+31:01:59.5 |
HIP 27582 |
9.98 |
| 2026-05-23 12:00 |
05:51:18.48 |
+31:01:49.7 |
HIP 27582 |
10.83 |
| 2026-05-24 00:00 |
05:51:22.40 |
+31:01:40.0 |
HIP 27582 |
11.68 |
| 2026-05-24 12:00 |
05:51:26.33 |
+31:01:30.3 |
HIP 27582 |
12.54 |
| 2026-05-25 00:00 |
05:51:30.28 |
+31:01:20.7 |
HIP 27582 |
13.40 |
| 2026-05-25 12:00 |
05:51:34.24 |
+31:01:11.1 |
HIP 27582 |
14.27 |
| 2026-05-26 00:00 |
05:51:38.22 |
+31:01:01.6 |
HIP 27582 |
15.13 |
| 2026-05-26 12:00 |
05:51:42.21 |
+31:00:52.2 |
HIP 27582 |
16.00 |
| 2026-05-27 00:00 |
05:51:46.21 |
+31:00:42.8 |
HIP 27582 |
16.87 |
| 2026-05-27 12:00 |
05:51:50.23 |
+31:00:33.5 |
HIP 27582 |
17.75 |
| 2026-05-28 00:00 |
05:51:54.25 |
+31:00:24.2 |
HIP 27582 |
18.63 |
| 2026-05-28 12:00 |
05:51:58.30 |
+31:00:15.0 |
HIP 27582 |
19.50 |
| 2026-05-29 00:00 |
05:52:02.35 |
+31:00:05.8 |
HIP 27582 |
20.39 |
| 2026-05-29 12:00 |
05:52:06.41 |
+30:59:56.7 |
HIP 27582 |
21.27 |
| 2026-05-30 00:00 |
05:52:10.49 |
+30:59:47.7 |
HIP 27582 |
22.16 |
| 2026-05-30 12:00 |
05:52:14.58 |
+30:59:38.7 |
HIP 27582 |
23.05 |
| 2026-05-31 00:00 |
05:52:18.68 |
+30:59:29.8 |
HIP 27582 |
23.94 |
| 2026-05-31 12:00 |
05:52:22.79 |
+30:59:20.9 |
HIP 27675 |
24.32 |
| 2026-06-01 00:00 |
05:52:26.91 |
+30:59:12.1 |
HIP 27675 |
24.61 |
| 2026-06-01 12:00 |
05:52:31.04 |
+30:59:03.3 |
HIP 27675 |
24.92 |
| 2026-06-02 00:00 |
05:52:35.18 |
+30:58:54.6 |
HIP 27675 |
25.27 |