メタデータ
| 項目 |
値 |
| Designation |
P/2010 D2 (WISE) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-03-05T03:52:32.606400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:40Z |
| Obs used |
66 |
| NEO |
- |
| M1 |
14.400 |
| 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) |
2010-09-01.0000000 |
| e |
0.45302440 |
| q (au) |
3.659054 |
| a (au) |
6.689610 |
| i (deg) |
57.176974 |
| Ω (om, deg) |
319.835860 |
| ω (w, deg) |
120.068180 |
| M (ma, deg) |
10.244377 |
等級
散乱 + 全体線形
$$
M_a = (13.079 + 2.282\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.079 |
| n |
2.282 |
| gf |
0.887 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
4.192 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
23:56:29.11 |
+60:15:49.7 |
HIP 118012 |
2.42 |
| 2026-07-29 12:00 |
23:56:16.57 |
+60:23:21.0 |
HIP 118012 |
5.80 |
| 2026-07-30 00:00 |
23:56:03.54 |
+60:30:51.1 |
HIP 118012 |
13.38 |
| 2026-07-30 12:00 |
23:55:50.02 |
+60:38:19.7 |
HIP 117830 |
19.52 |
| 2026-07-31 00:00 |
23:55:36.01 |
+60:45:46.9 |
HIP 117830 |
14.02 |
| 2026-07-31 12:00 |
23:55:21.50 |
+60:53:12.7 |
HIP 117830 |
11.32 |
| 2026-08-01 00:00 |
23:55:06.48 |
+61:00:37.0 |
HIP 117830 |
13.23 |
| 2026-08-01 12:00 |
23:54:50.96 |
+61:07:59.7 |
HIP 117763 |
15.94 |
| 2026-08-02 00:00 |
23:54:34.92 |
+61:15:21.0 |
HIP 117763 |
19.32 |
| 2026-08-02 12:00 |
23:54:18.37 |
+61:22:40.6 |
HIP 118066 |
19.71 |
| 2026-08-03 00:00 |
23:54:01.30 |
+61:29:58.6 |
HIP 117884 |
20.93 |
| 2026-08-03 12:00 |
23:53:43.70 |
+61:37:14.9 |
HIP 117884 |
14.80 |
| 2026-08-04 00:00 |
23:53:25.57 |
+61:44:29.6 |
HIP 117884 |
10.77 |
| 2026-08-04 12:00 |
23:53:06.90 |
+61:51:42.4 |
HIP 117705 |
5.97 |
| 2026-08-05 00:00 |
23:52:47.69 |
+61:58:53.6 |
HIP 117705 |
7.22 |
| 2026-08-05 12:00 |
23:52:27.94 |
+62:06:02.8 |
HIP 117707 |
1.45 |
| 2026-08-06 00:00 |
23:52:07.64 |
+62:13:10.2 |
HIP 117707 |
6.22 |
| 2026-08-06 12:00 |
23:51:46.79 |
+62:20:15.7 |
HIP 117707 |
13.69 |
| 2026-08-07 00:00 |
23:51:25.38 |
+62:27:19.3 |
HIP 117617 |
8.36 |
| 2026-08-07 12:00 |
23:51:03.41 |
+62:34:20.9 |
HIP 117617 |
1.72 |
| 2026-08-08 00:00 |
23:50:40.87 |
+62:41:20.4 |
HIP 117617 |
6.91 |
| 2026-08-08 12:00 |
23:50:17.76 |
+62:48:17.8 |
HIP 117617 |
14.26 |
| 2026-08-09 00:00 |
23:49:54.08 |
+62:55:13.1 |
HIP 117617 |
21.67 |
| 2026-08-09 12:00 |
23:49:29.82 |
+63:02:06.3 |
HIP 117684 |
23.27 |
| 2026-08-10 00:00 |
23:49:04.97 |
+63:08:57.2 |
HIP 117684 |
21.65 |
| 2026-08-10 12:00 |
23:48:39.55 |
+63:15:45.9 |
HIP 117220 |
18.06 |
| 2026-08-11 00:00 |
23:48:13.53 |
+63:22:32.2 |
HIP 117220 |
15.22 |
| 2026-08-11 12:00 |
23:47:46.93 |
+63:29:16.3 |
HIP 117220 |
15.64 |
| 2026-08-12 00:00 |
23:47:19.73 |
+63:35:57.9 |
HIP 117387 |
14.06 |
| 2026-08-12 12:00 |
23:46:51.94 |
+63:42:37.0 |
HIP 117387 |
10.43 |
| 2026-08-13 00:00 |
23:46:23.54 |
+63:49:13.7 |
HIP 117387 |
11.33 |
| 2026-08-13 12:00 |
23:45:54.55 |
+63:55:47.8 |
HIP 117387 |
16.00 |
| 2026-08-14 00:00 |
23:45:24.94 |
+64:02:19.4 |
HIP 117329 |
14.68 |
| 2026-08-14 12:00 |
23:44:54.74 |
+64:08:48.3 |
HIP 117257 |
14.20 |
| 2026-08-15 00:00 |
23:44:23.92 |
+64:15:14.6 |
HIP 117257 |
14.36 |
| 2026-08-15 12:00 |
23:43:52.50 |
+64:21:38.1 |
HIP 116948 |
13.56 |
| 2026-08-16 00:00 |
23:43:20.46 |
+64:27:58.9 |
HIP 116948 |
7.05 |
| 2026-08-16 12:00 |
23:42:47.81 |
+64:34:16.9 |
HIP 116948 |
4.43 |
| 2026-08-17 00:00 |
23:42:14.55 |
+64:40:32.0 |
HIP 116948 |
9.63 |
| 2026-08-17 12:00 |
23:41:40.67 |
+64:46:44.2 |
HIP 117069 |
14.89 |
| 2026-08-18 00:00 |
23:41:06.18 |
+64:52:53.4 |
HIP 117069 |
20.20 |
| 2026-08-18 12:00 |
23:40:31.06 |
+64:58:59.7 |
HIP 117069 |
26.41 |
| 2026-08-19 00:00 |
23:39:55.33 |
+65:05:03.0 |
HIP 116622 |
24.13 |